KR20050082341A - Method for induction of compact shoots as propagule of potato - Google Patents

Abstract

The present invention provides a method of inducing a compact chute for potatoes comprising treating a potato plant growth inhibitor to a potato plant and culturing the potato plant by stimulating the side or liquid solution of the potato plant, wherein the compact chute is a nutritious acting as a growth model. The present invention relates to a method of inducing a compact chute for potatoes, which functions as a tissue or a nutritional organ. Unlike conventional methods for propagating tuber-shaped seed potatoes through in-flight culture, soil culture, or hydroponic cultivation, the present invention stimulates the side or liquid embryos of the stem of the ground to produce a compact chute that is appropriately suppressed according to the purpose of use. Make it easy to produce in large quantities. The compact chute obtained by the present invention can be used as a model of potato growth, and can be used as a mother potato for replacing conventional seed potatoes or producing conventional seed potatoes. According to the method of the present invention, it is possible to produce a large amount of disease-free potato substitutes that are significantly advanced.

Description

Method for Induction of Compact Shoots as Propagule of Potato}

The present invention relates to a method for deriving a compact chute of potatoes, and more particularly, to a substitute for conventional tuber-type seed potatoes for efficient propagation of various cultivated potato varieties.

Conventional seed potato production standards include: 1) micro tuber production; 2) mini tuber propagation through micro tube planting; and 3) micro tube and mini tuber planting. Production and 4) Normal-standard seed potato seedlings are grown by split-planting plants. Depending on the cultivation method, 1) in-flight production, 2) hydroponic cultivation, and 3) soil cultivation including medium diameter are used.

The seed cultivation method ultimately pursues the most efficient growth method, and whether or not the seed potato is pathogenic is a secondary problem.

Therefore, the most efficient growth method for mass production of seed potatoes or their substitutes can be defined as the production of the largest number of seed potatoes or their substitutes with the administration of the minimum amount of capital and labor per unit area. For example, the establishment of a cultivation facility to prevent the infection of various pests including viruses is a fundamental matter in all seed potato production methods, and thus, it is not a matter that is involved in the efficiency for producing seed potato or its substitutes.

The present inventors earnestly researched to develop a substitute for a conventional tuber-shaped seed potato for efficient propagation of various cultivated potato varieties. As a result, a compact shoot of a form in which the stem elongation is extremely suppressed from the side or liquid solution of the ground stem is obtained. By making multiple inductions and confirming that a compact chute could be used as a growth model for potatoes, the present invention was completed.

It is therefore an object of the present invention to provide a method for inducing compact chutes of potatoes.

Another object of the present invention is to provide a method for producing a potato compact chute.

Another object of the present invention is to provide a potato compact chute.

Another object of the present invention to provide a method for growing potatoes using the compact chute.

An object of the present invention is to provide a potato obtained by the method described above.

Other objects and advantages of the present invention will become apparent from the following detailed description, claims and drawings.

According to an aspect of the present invention, the present invention provides a method for inducing a compact suit of potatoes, comprising the step of cultivating the potato plant by treating a plant growth inhibitor to the potato plant and stimulating the side or liquid solution of the potato plant. The compact chute of the present invention acts as a vegetative tissue or nutrient organ that can act as a growth model.

According to another aspect of the present invention, the present invention provides a method for producing a potato compact chute, comprising the step of harvesting the potato compact chute derived by the above-described method.

According to another aspect of the present invention, the present invention provides a potato compact chute obtained by a method for producing a potato compact chute.

As used herein, the term "compact suit" is a new term for potato tubers, ie, underground stems, which is one form of plant stem. It is an acronym created to refer to the stem of the ground, which is assumed to be equivalent to, and the corresponding interhepatic growth is suppressed. That is, in the present invention, the compact chute is intended to be used only for potatoes and plants, and includes a large number of side sprouts, including sperm, which can function as a nutrient propagation body. It means stem.

Plant growth inhibitors usable in the present invention include any conventionally used in the art, for example, ethephon, ethrel, abscisic acid, phosphon D (phosphon D) D), Amo-1618, B-905 (B-905, N-dimethyl-amino succinamic acid), ancymidol, carbaryl, chlormequat, chloro IPC (chloro IPC), daminozide, flurprimidol, hydrogen cyanamide, maleic hydrazide, mefluidide, mepicuart chloride (mepiquat chloride), paclobutrozol, prohexadione calcium and uniconazole. Preferably, the plant growth inhibitors used in the present invention are Esponone, Esrel, Absixic Acid, Phosphon D, Amo-1618, and B-905, and more preferably, Esefone, Esrel, and Absixic Acid. And most preferred are Esponone and Esrel.

The treatment of the plant growth inhibitory agent is carried out by spraying the vigorously growing potato plants before and after flowering at 2 to 2 week intervals, preferably at 5 to 8 day intervals, more preferably at about 1 week intervals. The foliar spray is most preferable for the spraying method. The plant growth inhibitor to be used is preferably a solution of 1-1,000 ppm. For example, 10-1,000 ppm of ethsefone or Esrel is preferred, and 1-100 ppm is preferred of the abscitic acid, more preferably 100 ppm of 10%, and 10 ppm of abscisonic acid. to be. On the other hand, depending on the reaction state (eg, abnormal growth of leaves, stems, leaf yellowing and deciduous phenomena) of potato plants treated with plant growth inhibitors can be adjusted spacing interval and spray concentration.

According to a preferred embodiment of the present invention, the induction of the compact chute can be further promoted by adjusting the photoperiod in parallel with the treatment of the plant growth inhibitory agent. According to the method of the invention, the induction of the compact chute can be promoted by employing a photoperiod of less than 8 hours. According to a more preferred embodiment of the invention, the method of the invention is carried out with a photoperiod of 0-8 hours. By maintaining the photoperiod of 12-16 hours until the late flowering of potato plants, and maintaining the complete dark state of less than 8 hours or within 7 days in parallel with the plant growth regulator treatment, the development of compact chute can be induced to the maximum.

According to a preferred embodiment of the invention, the induction of the compact chute can be further facilitated by treating trehalose in parallel with the treatment of plant growth inhibitors. Disaccharide trehalose, one of potato's stored carbohydrates, is a substance that accumulates in plants as the growth environment is poor. Preferably, it is a solution of trehalose 10-100 mM, more preferably a 30-70 mM solution, most preferably about 50 mM solution. The treatment of trehalose is preferably carried out by spraying the potato plants growing vigorously before and after flowering at intervals of 2-5 days, and foliar spraying is most preferred. On the other hand, the spacing interval and the spraying concentration can be adjusted according to the reaction state of the trehalose-treated potato plant (eg, the reaction of the basal or sperm of the potato plant in the state in which the interstitial growth is suppressed).

In order to promote the induction of the compact chute, it is also desirable to adjust the watering. According to a preferred embodiment of the present invention, it is also desirable to adjust the watering to facilitate the induction of the compact chute. Preferred irrigation control is to be as close to the counterfeit point as possible without inhibiting the growth of the compact chute. In the case of hydroponic cultivation, the osmotic pressure of the cultivation solution is adjusted using sodium chloride or the like. In the case of sodium chloride, it is preferred to add 0.3-3%, most preferably at about 1.5%.

According to a preferred embodiment of the present invention, by preventing the carbon fairy tale of the potato plant is not transferred to the underground tuber, it is possible to increase the average weight of the compact chute and the yield per plant individual. Such treatment can be carried out in a variety of ways, preferably in a physical manner for ease of implementation. According to a specific embodiment, when planting soil or medium diameter, potato plants are planted on solid materials that cannot pass through the roots, and after the roots have adhered, the topsoil is removed to suppress the occurrence of stolon and to remove the welfare generated. It is desirable to be able to facilitate. In the case of hydroponic cultivation, after the roots are rooted, the upper part of the root is pulled up to the outside of the hydroponic cultivation bed to suppress the occurrence of welfare and facilitate the removal of the generated welfare.

On the other hand, in the cultivation to obtain a compact chute, planting density is more efficient in the production of a compact chute than conventional planting or hydroponic cultivation at a density of 5 times or more than the proper planting density required for tuber formation. . Specifically, 20-50 plants per 1 m 2 are planted and grown. Planting plants include all types of vegetative propagules, including tubers, tissue culture seedlings, cutting seedlings and compact suits. It is believed that the suppression of tuber formation by wheat cultivation and the competition between plants by close contact promote compact chute formation.

Summarizing the above-described method for inducing the compact chute of the present invention, the method of the present invention includes the treatment of the plant growth inhibitor as an essential step, optionally (i) the treatment of trehalose, (ii) the length, temperature and At least one of the processes of irrigation and (i) suppression of underground tuber formation is performed in parallel. Most preferably, the above four methods are performed in parallel.

Harvesting of the compact chute is preferably carried out when the stem of the potato grows and the leaves are yellowed and no more carbonaceous matter can be accumulated, but the harvest time can be adjusted as necessary. If the harvest time is too early to cure the compact chute, the vitality of the compact chute decreases due to the loss of moisture after harvesting.

The present invention has been developed for the efficient growth of various cultivated potato varieties. Unlike conventional methods for propagating tuber-shaped seed potatoes through in-flight culture, soil culture, or hydroponic cultivation, the present invention stimulates the side or liquid embryos of the stems of the ground stem to produce a compact chute that is appropriately suppressed according to the purpose of use. Make it easy to produce in large quantities. The compact chute obtained by the present invention can be used as a model of potato growth, and can be used as a mother potato for replacing conventional seed potatoes or producing conventional seed potatoes. According to the method of the present invention, it is possible to produce a large amount of disease-free potato substitutes that are significantly advanced.

According to another aspect of the invention, the present invention comprises the steps of (a) harvesting the potato compact chute obtained by the above-described method of inducing the compact chute; And (b) planting the potato compact chute; And (c) cultivating the planted compact chute.

According to another aspect of the present invention, the present invention provides a potato obtained by the growth method described above.

Planting of potato compact chutes and cultivation of planted compact chutes can be carried out through the usual planting and cultivation processes of Solanum plants (Jang Byeong-ho, Potato Encyclopedia , Advanced Culture History, pp 286 (1997)).

On the other hand, according to a preferred embodiment of the present invention, the planting of the potato compact chute of the present invention is wrapped in a compact chute with a mixture of peat moss, fungicides, pesticides, fertilizers and useful microorganisms, made into a spherical or conical shaped body and then seeded It can be carried out as. Planting in this way has the advantage of mechanization. Pittmoss used in the mixture is conventionally used in the art, and fungicides include captan, anthrax star, daconyl, lidomimemge, acidophane, acidophane, stantetan, palpar, formum, formum, and porumman. , Forum Sea, Kirgi-M, Furonside, and the like. Insecticides may be used, such as condodo, dagal, decis, deltanet, lempage, boomerang, sevin, ascend or azodrin, and as fertilizers, urea, nitrate, nitrate, calories or dragon Adults may be used, and useful microorganisms may include Trichoderma, Pseudomonas, Tricoderma, Bacillus, Brevibacillus, Streptomyces, Azotobacter, Tricothecium, or V. mycorrhizae.

Compared to conventional seed potatoes, the compact chute of the present invention has a short dormancy period and can be grown as a plug seedling, thus reducing the need for initial weeding work requiring high manpower in existing conventional cultivation methods, as well as bypassing frost damage. There is an advantage. Potato growth method of the present invention can be carried out not only for the production of seed potatoes, but also for potato cultivation for market sale.

Hereinafter, the present invention will be described in more detail with reference to Examples. These examples are only for illustrating the present invention in more detail, it is to those of ordinary skill in the art that the scope of the present invention is not limited by these examples in accordance with the gist of the present invention. It is self-evident.

Example 1: Induction of a Compact Suit

Normally grown potato stems or eggs are usually dormant in the absence of external stimuli such as removal of the sperm. However, external tube stimulation such as treatment of plant growth regulators, sun control, and insect pests rarely results in the formation of aerial tubers with interstitial growth. In the present invention, in order to artificially and uniformly induce the occurrence of such ground tubers, various treatments are performed alone or in parallel to develop a method of inducing a so-called compact chute by arbitrarily controlling the growth of internodes. The method is as follows.

Potatoes used in the following specific examples are Atlantic and Superior varieties that are widely grown around the world.

(1) Treatment of plant growth regulators :

Plant growth inhibitors such as Ethephon, Ethrel, Abscisic acid, Phosphon-D, Amo-1618, B-905 (B-905 ( Growth inhibitors, such as N-dimethyl-amino succinamic acid), were applied to the cultivated potato plants before and after flowering for 2-4 weeks at 0.5-1 week intervals to promote the induction of the compact suit. Treated Esspon and Esrel are 100 ppm solution, Absonic Acid is 10 ppm solution, Phosphon-D is 100 ppm solution, Amo-1618 is 100 ppm solution, B-905 is 50 ppm solution. At this time, the spraying interval and the spraying concentration could be reduced depending on the reaction state of the plant. For example, when the reaction state of the plant was extremely inhibited or weak in growth, the spraying interval was adjusted to 1 week, and the spraying concentration was adjusted to 1 / 2-1 / 5 of the standard concentration.

Compact chute production efficiency by plant growth regulator treatment Plant growth regulators Compact chute productivity by concentration Treatment concentration (ppm) Number of compact suits Treatment concentration (ppm) Number of compact suits Essefon (Esrel) 50 124 ± 19.0 100 131 ± 21.5 Citric acid 5 94 ± 35.8 10 107 ± 31.3 Phosphon-d 50 85 ± 25.9 100 96 ± 22.9 Amo-1618 50 63 ± 28.1 100 78 ± 26.4 B-905 25 57 ± 25.3 50 69 ± 31.2 Distilled water - 0 - 0

The results in Table 1 are obtained by treating 30 plants for each plant growth regulator, treated with plant growth regulators for 4 weeks at weekly intervals, harvested after 6 weeks of the final treatment, and experimented in the rain forest house Was carried out. As can be seen in Table 1, 131 ± 21.5 compact chutes per potato plant were produced in 100 parts of ESSEPON, showing good results compared to other plant growth regulators.

(2) Treatment of trehalose :

Disaccharide trehalose, one of the potato's stored carbohydrates, is a substance that accumulates in plants as the growth environment is poor. When foliar spraying was performed for 2-4 weeks at intervals of 0.5-1 weeks using this trehalose 50 mM solution, the development of compact chutes was promoted. Depending on the reaction state of the plant, the spraying interval and spraying concentration could be reduced. For example, when the reaction state of the plant was delayed, the spacing interval was adjusted to 0.5 weeks, and the spraying concentration was adjusted to 2-5 times the standard concentration.

Compact chute efficiency when combined with plant growth regulator and 50 mM trehalose Plant Growth Regulator / Concentration 50 mM Trehalose Processor Compact Suit Productivity (pcs) No treatment process Esthephon (Esrel) / 100 ppm 131 ± 21.5 164 ± 27.8 Absmic Acid / 10 ppm 107 ± 31.3 121 ± 35.8 Phosphon-D / 100 ppm 96 ± 22.9 109 ± 17.3 AMO-1618 / 100 ppm 78 ± 26.4 92 ± 24.5 B-905 / 50 ppm 69 ± 31.2 87 ± 16.4 Distilled water 0 35 ± 11.8

The results in Table 2 are obtained by treating 30 plants for each plant growth regulator, treated with plant growth regulators for 4 weeks at weekly intervals, harvested after 6 weeks of the final treatment, and experimented in the rain forest house Was carried out. As can be seen from Table 2, 164 ± 27.8 compact chutes per potato were produced in 100 ppm of Essone when treated with 50 mM trehalose, which showed an additive result compared to a single plant growth regulator. The rate was about 25%.

(3) Work and watering control :

It is desirable to maintain a photoperiod of 12 hours or more for the vigorous growth of potatoes, but by employing a photoperiod of less than 8 hours, the induction of the compact chute was facilitated. It is possible to maximize the development of compact chute by maintaining 12-16 hours of photoperiod before and after flowering of potato plants and maintaining photoperiod of 8 hours or less or complete dark condition for 7 days in parallel with plant growth regulator treatment. there was.

 Compact chute production efficiency by photoperiod / processing period Plant Growth Regulator / Concentration Photoperiod / person compact chute productivity 12hr / 4 weeks 8hr / 4 weeks 0hr / 4 days 0hr / 1 week Esthephon (Esrel) / 100 ppm 131 ± 21.5 143 ± 20.1 112 ± 19.6 139 ± 29.6 Absmic Acid / 10 ppm 107 ± 31.3 115 ± 25.9 95 ± 22.7 111 ± 38.3 Phosphon-D / 100 ppm 96 ± 22.9 103 ± 13.5 71 ± 13.0 89 ± 20.0 AMO-1618 / 100 ppm 78 ± 26.4 88 ± 29.0 67 ± 21.4 71 ± 27.1 B-905 / 50 ppm 69 ± 31.2 79 ± 36.9 62 ± 23.3 62 ± 22.2 Distilled water 0 0 0 0

The results in Table 3 are obtained by treating 30 plants for each plant growth regulator, treated with plant growth regulators for 4 weeks at weekly intervals, harvested after 6 weeks of the final treatment, silver foil in the rain forest house The light shielding experiment was performed using the film. As can be seen in Table 3, 143 ± 20.1 compact chutes per potato were produced at 100 ppm of Esponon when treated for 4 weeks with 8 hours of photoperiod, which showed an additive result compared to a single plant growth regulator. The increase rate was around 9%. In the case of the dark state for one week, 139 ± 29.6 compact chutes were produced, and there was no big difference compared to the four-week long-day treatment with 8 hours of photoperiod. Therefore, the method of maintaining the cancer state for one week for the convenience of work appeared to be more preferable.

The irrigation treatment suitable for the induction of the compact chute during the treatment period of the plant growth regulator was found to control as close to the counterfeit point as possible without inhibiting the growth of the compact chute. This result is considered as a result of the increase of stress due to lack of moisture. After the compact chute is formed, it is necessary to maintain the wet condition to meet the optimum moisture conditions necessary for the growth of the compact chute to obtain a larger and more faithful compact chute. In the case of hydroponic cultivation, the osmotic pressure of the cultivation solution is adjusted using sodium chloride or the like. In the case of sodium chloride, 0.3-3% is added and preferably adjusted to around 1.5%.

Compact chute production efficiency by water treatment during plant growth regulator treatment Plant Growth Regulator / Concentration Compact chute productivity by watering treatment Practice Limited watering Hydroponic Cultivation Hydroponic + NaCl 1.5% Esthephon (Esrel) / 100 ppm 131 ± 21.5 147 ± 29.1 107 ± 22.3 125 ± 26.3 Absmic Acid / 10 ppm 107 ± 31.3 111 ± 36.3 89 ± 23.3 93 ± 15.7 Phosphon-D / 100 ppm 96 ± 22.9 113 ± 29.7 72 ± 25.6 92 ± 29.8 AMO-1618 / 100 ppm 78 ± 26.4 94 ± 22.0 63 ± 21.4 75 ± 16.0 B-905 / 50 ppm 69 ± 31.2 81 ± 24.3 58 ± 19.2 59 ± 35.6 Distilled water 0 0 0 0

The results in Table 4 are obtained by treating 30 plants for each plant growth regulator, treated with plant growth regulators for 4 weeks at weekly intervals, harvested after 6 weeks of the final treatment, silver foil in the rain forest house Shading experiments were carried out using the film, and conventional hydroponic cultivation was carried out using 1,000 times of the multiply-69 product name of Korean Horticulture Materials. As can be seen from Table 4, 147 ± 29.1 compact chutes per potato were produced in 100 ppm of Esponon treated with limited irrigation, which showed desirable results compared to a single treatment or hydroponic plant growth regulator. City production rate was around 12%.

(4) Inhibition of tuber formation :

By blocking the transfer of carbohydrates from potato plants to underground tubers, the average weight of the compact chute and the yield per plant could be increased. To this end, potato plants may be planted on solid materials that cannot be passed by roots in soil or medium tillage, and the topsoil may be removed after roots have adhered, thereby suppressing the occurrence of welfare and facilitating the removal of welfare. It was made. In the case of hydroponic cultivation, after the roots were rooted, the upper part of the root was raised to the outside of the hydroponic cultivation bed to suppress the occurrence of welfare and facilitate the removal of the welfare.

The compact chute induced in accordance with the above embodiment is very similar in appearance to the underground tuber of potato, but most of the leaves are attached, and the sperm is in a dormant or shallow dormant state (see FIG. 1-). 3). In Fig. 1, the left side is a conventional tuber-shaped seed potato, and the right side is a compact suit of the present invention. Compared to the underground tuber, the internal structure of the compact chute was found to have a very high alkaloid content due to the lack of starch accumulation or a dark color.

Example 2: Mass Production of Compact Suits

In order to mass produce a compact chute, the method of inducing a compact chute of the present invention was applied to various seed potato production methods. However, in conventional soil cultivation or hydroponic cultivation, it is found that wheat cultivation at a density of 5 times or more is more efficient in producing a compact chute than a proper planting density required for tuber formation (see FIG. 4). It is believed that the suppression of tuber formation by wheat cultivation and the competition between plants by close contact promote compact chute formation.

(1) Mass production of compact suits by land cultivation :

The plowing of the pavement to be sown in the compact chute should be as deep as 20 cm, and stopping the pavement should be made immediately after plowing and sowing to prevent drying damage. Compost spraying is done before or after plowing. Fertilizer spraying can be applied all over and furrows, preferably furrows fertilization. In the case of spring cultivation, there are two rows and two rows. Spring cultivation is generally advantageous for soil temperature and water management. The mockup width is 60-75cm, the width of the second row planting is 40 ~ 50cm, the weekly distance is suitable 20 ~ 30cm. In summer cultivation, one-row planting method is preferable, and ridge width and day distance are like spring cultivation. The seeding depth is shallow when the temperature is low and wet, and deep when it is dry and the temperature is high. Since planting in 1 row, two or three drum cycles should be done after sowing. One drum cycle is carried out when potato shoots are grown by 15-20 cm, and two drum cycles are carried out after 15-20 days of one drum cycle.

The choice of harvest time is based on when the potatoes are ripe. The harvest time varies depending on the variety, cultivation environment, and sowing time. Too early harvest time results in low starch, high content of reducing sugars, and a weak skin, making it easy to peel off and hurt. If the harvest is too late, there is a risk of corruption, so the harvest should be timed well. When potatoes mature, the tubers harden and the foliage rises, causing the stems to turn yellow. If the ground part remains, work is inconvenient, so kill the ground part by using foliage paste and harvest. It also serves to reduce the incidence of harvesters. On harvest days, the temperature should be at least 10 ° C. At low temperatures, sugar content increases, there is a risk of cold damage, and on rainy or wet days, the soil is heavily soiled with potatoes, causing cuts, rot, peeling, etc., to deteriorate the quality.

Harvested potatoes are stored in a well-ventilated and cool place in summer, or stored in a well-ventilated container, and stored in winter so that the temperature does not fall below 0 degrees.

During storage, potatoes are significantly reduced in weight due to breathing, transpiration, and carbohydrate application, especially in order to maintain the chemical composition in the potato. Particular attention should be paid to the processing potatoes, since the storage temperature is 10 degrees. At this time, the natural hum is a problem. Therefore, it is necessary to suppress the formation of the germ. To this end, the developed countries use germination inhibitors and are also commercially available in Korea.

Potatoes stored at low temperatures are likely to be less likely to develop pathogens, but the activity of the pathogens is much stronger than expected, requiring attention. If decaying potatoes occur on one side of the potato storage, there is a risk that the whole pathogen will decay as the pathogen is transmitted to the healthy potatoes at a rapid rate. Therefore, it should be observed from time to time during storage to prevent low-temperature damage, to quickly remove the decaying potatoes, and to prevent damage and caution.

(2) Mass production of compact suits by hydroponic cultivation :

Potato tissue culture seedlings, tubers, and seedlings are placed on a formal plate made of styrofoam with holes 25cm × 20cm in diameter about 2.5cm in diameter and supported by a sponge. The temperature inside the greenhouse is controlled below 28 ℃ during the day and above 13 ℃ at night.

Representative cultures used in potato nutrient cultivation include Japanese raw prescription solution, test solution, and potato solution. However, you can use 1,000 feeds of multifeed, which is a commercial product from the Horticulture Materials Center, a commercial product. The concentration of the culture medium (EC) is the total concentration of various inorganic salts in the culture medium and is one of the factors affecting the absorption of inorganic components. In particular, concentration is related to the absorption ratio of water and inorganic ions dissolved in water, so it is important to find a proper concentration so that water molecules and inorganic ions can be continuously absorbed at a constant rate. In general, the transpiration is strong in the high temperature phase, so the moisture demand is high, so the concentration is controlled relatively low to induce sufficient water absorption. In the low temperature phase, the moisture demand is relatively low. Suppresses the excessive radish of plants.

During the cultivation period, the concentration of the broth is controlled at 1-2mS / cm. If the concentration of the initial feed broth is 1 mS / cm or less, or 2 mS / cm or more, the fluctuations are severe during the growing period. In general, when the pH of the culture medium is 5.5 to 6.5, the iron, manganese, phosphorus, etc. becomes insoluble, so that the plant cannot absorb it, and when it is 4 or less, deficiencies such as calcium, potassium, and magnesium appear. During the actual cultivation, the pH of the culture solution decreases due to the absorption of NH ₄ -N at the beginning of the nutrient solution, but gradually increases as the absorption of NO ₃ -N occurs when the NH ₄ -N is depleted in the culture solution. When the pH rises, use acids such as sulfuric acid, phosphoric acid, and nitric acid to lower the pH to an appropriate level, or ammonium nitrate (NH ₄ NO ₃ ), ammonium phosphate (NH ₄ H ₂ PO ₄ ), and yuan ((NH ₄ ) ₂ NH ₄ -N fertilizer such as SO ₄ ].

The culture solution is warmed or cooled so that the culture medium temperature is 15-25 ° C. Mainly during winter cultivation, it is heated with a heating rod, and during summer cultivation, pipes are installed in the cultivation plant to circulate cold groundwater or cool the culture solution itself with groundwater. In winter cultivation, the change in liquid temperature due to daily crossover of the temperature rather than the nutrient solution temperature itself affects the growth of plants.

In order to prevent the formation of tubers in the hydroponic cultivation bed during the cultivation, it is preferable to pull up the hydroponic cultivation potato seedling to the upper part of the bed at the initial stage of the generation of the tuber to suppress the formation of the tubers and to facilitate the removal of the formed tubers. If the temperature in the greenhouse is more than 25 ℃ or more than 14 hours of work, welfare does not develop into tubers, but occurs as stems, which can prevent the loss of carbon assimilation due to tuber formation, thereby increasing the production of compact suits.

The treatment of plant growth regulator and trehalose for induction of compact chute, and the treatment of sunshade are the same as those of the above-mentioned land cultivation, and the limited irrigation treatment to give moisture stress adds 0.3% to 3% of sodium chloride (NaCl) in the culture medium. As a result, it is possible to obtain a corresponding effect on watering during soil cultivation. More preferably, 1.5% of sodium chloride is added.

Example 3 Post Harvest and Storage of Compact Chute

The harvesting of the compact chute is preferably carried out when the stem of the potato is grown and the leaves are yellowed and no more carbonaceous matter can be accumulated, but the harvest time can be adjusted as necessary. However, when the harvest time is too early to cure the compact chute, the vitality of the compact chute decreases due to loss of moisture after harvesting.

The weight of the harvested compact chute was distributed around 0.5-50 g and stored in five grades. The harvested compact chutes were stored at 8-10 ° C., treated with Daisen Hydrated or Captan powder, and could be stored for at least 6 months without loss of vitality.

Example 4: Potato cultivation method for seed potato production and market sale using a compact chute

Sowing and initial cultivation of the compact chute were carried out based on the conventional potato cultivation method. However, since the period of dormancy is shorter than that of conventional seed potatoes, it can be grown as a plug seedling. Therefore, the conventional cultivation method has the advantage of lowering the need for early weeding, which requires high manpower, and bypassing the first frost damage. Potato cultivation for market sales as well as seed potato production can be carried out using a compact chute, but in general farms, the use of the compact chute should be limited to the production of potato for market sale.

(1) Mass production of next-generation seed potatoes using compact suit :

The compact chute was pressed at 10 to 25 cm intervals, but planted by making a seedling having a width of 90 to 120 cm without forming a ridge (see FIG. 4). Sowing and planting of compact chutes are carried out in the same way as conventional potato cultivation. The plowing of the pavement to be sown in the compact chute should be as deep as 20 cm. The seeding depth is shallow when the temperature is low and wet, and deep when it is dry and the temperature is high. Planted compact chutes started rooting and growing within 10 days (see Figure 5), and formed multiple tubers from the beginning of growth (see Figure 6). At this time, nitrogenous fertilizers were added to the foliar spray if necessary, not to exceed 30 kg / 10a. In order to harvest more seed potatoes, two or three drum cycles should be done after sowing. One drum cycle is carried out when potato shoots are grown by 15-20 cm, and two drum cycles are carried out after 15-20 days of one drum cycle. If the drum cycle is difficult during wheat planting, the soil can be covered with light soil using a fertilizer spreader.

(2) Cultivation of potatoes for market sale using a compact chute :

When the compact chute was planted according to the planting density of conventional cultivation, but for the purpose of early harvest, wheat cultivation of about 125% was possible (see FIGS. 7-9). Fertilization and cultivation management were carried out in accordance with conventional cultivation. Specifically, small potatoes with low marketability after harvesting can be recycled to the next small seed potato only when the infection of the pest is low.

The present invention has been developed for the efficient growth of various cultivated potato varieties. Unlike conventional methods for propagating tuber-shaped seed potatoes through in-flight culture, soil culture, or hydroponic cultivation, the present invention stimulates the side or liquid embryos of the stems of the ground stem to produce a compact chute that is appropriately suppressed according to the purpose of use. Make it easy to produce in large quantities. The compact chute obtained by the present invention can be used as a model of potato growth, and can be used as a mother potato for replacing conventional seed potatoes or producing conventional seed potatoes. According to the method of the present invention, it is possible to produce a large amount of disease-free potato substitutes that are significantly advanced.

1 is a comparative photograph of a conventional tuber-shaped seed potato for growing and growing potatoes and a compact chute according to the present invention;

2 is a photograph showing potato plants with a compact chute formed according to the method of the present invention;

3 is a photograph showing a compact chute formed in accordance with the method of the present invention;

Figure 4 is a photograph showing the wheat planting for mass production of the compact chute of the present invention;

5 is a photograph showing the rooting and growth of seed potatoes produced using the compact chute of the present invention;

Figure 6 is a photograph showing the state of underground tubers of seed potatoes produced using the compact chute of the present invention; And

7-9 are photographs of potatoes for sale grown using the compact chute of the present invention.

Claims (12)

A method of inducing a compact chute of potatoes comprising treating a plant growth inhibitor to a potato plant and stimulating the side or liquid embryo of the potato plant to grow the potato plant, wherein the compact chute is a nutritional tissue or nutrition capable of acting as a growth model. A method of inducing a compact chute for potatoes, which acts as an organ. The method of claim 1, wherein the plant growth inhibitor is ethephon, ethrel, abscisic acid, phosphon D, Amo-1618 (Amo-1618), B- 905 (B-905, N-dimethyl-amino succinamic acid), ancymidol, carbaryl, chlormequat, chloro IPC, daminozide, flu Flurprimidol, hydrogen cyanamide, maleic hydrazide, mefluidide, mepiquat chloride, palobutrozol, A method of inducing a compact chute for potatoes, characterized in that it is at least one plant growth inhibitor selected from the group consisting of prohexadione calcium and uniconazole. The method of claim 1, wherein the method is performed with a photoperiod of 0-8 hours. The method of claim 1, wherein the method further comprises the treatment of trehalose. The method of claim 1, wherein the method is carried out while preventing the carbon fairy tale of potato plants from being transferred to underground tubers, thereby suppressing the formation of underground tubers. The method of claim 1, wherein the plant growth inhibitor is a solution of 1-1,000 ppm. The method of claim 4, wherein the trehalose is a solution of 10-100 mM. A method of producing a potato compact chute, comprising the step of harvesting the potato compact chute induced by the method of claim 1. 9. The method of claim 8, wherein the harvesting of the potato compact chute is produced at a time point when the stalk of the potato proceeds and the leaves are yellowed. Potato compact chute obtained by the method of claim 8 or 9. (a) planting the potato compact chute of claim 10; And (b) growing the planted compact chute. Potato obtained by the method of claim 11.