JPH08280244A - Production of sugar cane seedling - Google Patents

Abstract

PURPOSE: To readily mass produce a sugar cane seedling. CONSTITUTION: The following procedures (1) to (4) are repeated at least one or more times to form a great number of buds on a sugar cane and the buds are separated to prepare seedlings. (1) Buds are germinated from the lateral buds of a sugarcane. (2) The germinated buds are grown. (3) The head parts of the grown buds cut. (4) New buds are germinated from the lateral buds of the cut buds.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a sugar cane seedling by inducing a large number of buds from sugar cane lateral buds and separating the buds.

[0002]

2. Description of the Related Art For cultivating sugar cane, there are a method of newly planting every 1-2 years and a method of sprouting from a stump after cutting a stem part of the sugar cane (hereinafter referred to as "sugar stalk"). . Straining method is a method of repeating germination-growth-cutting for a long period of time from several years to a dozen years, but as the cutting is repeated, the production amount decreases year by year due to aging of the stalk and damage of pests. Go.

[0003] A stalk has a lateral bud at its node, and a new sorghum plant is a stalk (two-section seedling) cut from the grown stalk, usually leaving two nodes.

[0004]

As described above, the two-section seedlings have been used in the planting of sugar cane, but the preparation of the two-section seedlings is a heavy labor, and the buds of the two-section seedlings are in an ungerminated state. In many cases, it is often dropped or damaged during planting in the field.
In addition, there are many immature buds and aged seedlings, and there are many cases of ungermination and death due to unseasonable weather such as drought and heavy rain. The germination rate is usually 5
It is about 0 to 60%.

Furthermore, the 2-section seedlings are usually collected from the fifth leaf or less of the leaves with open tips of the stalk, and about 5 to 6 buds (the number of buds is 10 to 12 buds). Although it is possible, the stalk itself is a harvested product, and the yield is reduced by using it for seedlings.
An object of the present invention is to solve the problems related to such a method for producing sugar cane seedlings, and specifically to provide a means for easily and mass producing sugar cane seedlings.

[0006]

Means for Solving the Problems The present inventor focused on the fact that when the shoot head of a stalk is excised, a germination phenomenon occurs in which lateral buds germinate. It was found that a large number of shoots that can be used as seedlings can be obtained by intentionally causing a germination phenomenon, and completed the present invention.

That is, in the present invention, the following operations (1) to (4) are repeated at least once or more: (1) Germination of buds from lateral buds of sugar cane; (2) Growth of germinated buds; (3) ) Excising the top part of the grown buds; (4) Germinating new buds from the lateral buds of the removed buds; After forming a large number of buds in sugar cane, separating the buds into seedlings It is a method of producing sugar cane seedlings.

The present invention will be described in detail below. The production of the sugar cane seedling of the present invention can be carried out as follows. First, the canopy head of the cane stalk is cut off. When to disconnect
After the tip of the cane has opened and the sugar cane has grown sufficiently,
Usually 6 to 7 months after germination. The cutting site is
Although it depends on the varieties of sugar cane and the growth condition, it is usually preferable to cut the 11th to 12th knots from the above-ground part. From cutting 5
The primary buds germinate from the buds of the mother stem in 7 days.

The germinated primary shoots are allowed to grow to about 6 to 8 expanded leaves, and then the tops of the shoots are cut off. As for the cleavage site, it is preferable to cut the 11th to 12th nodes from the germination base. The secondary bud germinates from the lateral bud of the primary bud 5 to 7 days after the cutting. 1 and 2 show the appearance of sugar cane at the stage when the secondary buds germinated. Figure 1 shows 1 from the germination of secondary buds.
2 days after the germination of the secondary bud.
It is after 5 days.

The secondary buds can also be used as seedlings, but usually the primary buds and secondary buds germinate about 5 and 6 respectively, so at this point only about 30 seedlings are obtained. I can't. Therefore, it is preferable that the secondary shoots are also cut off at the top of the treetops and subjected to a germination treatment as in the case of the primary shoots. The number of seedlings obtained can be further increased by performing the same treatment on the tertiary buds obtained from the secondary buds and the quaternary buds obtained from the tertiary buds. Repeat the above operation to form a sufficient number of buds, and when the buds grow to a certain size, the buds are separated,
Seedling.

Further, since there are growing tissues in the nodal parts of the stalk, in some cases, a large amount of buds can be induced from the lateral buds by treating the lateral buds with plant hormones before or just after the cutting of the apical head. it can. The obtained seedlings are
It is planted in a paper pot or pot seedling base material, etc., which is filled with cultivated soil, so as to be rooted, and then planted in a field.

[0012]

[Example] 50 two-section seedlings of sugar cane (variety: F161) were used between the plants.
cm and ridge width 140 cm were planted in the field. As the fertilizer, compost was used as the basic fertilizer, and BB500 (manufactured by Ryukyu fertilizer) was used as the additional fertilizer. However, additional fertilization was not given until the stalks had split. The control of the pests was carried out by spraying Tokuthione emulsion (manufactured by Japan Bayer Agrochem Co., Ltd.) at intervals of 10 days. The plant height reached 300 cm 7 months after planting, and at this point, the shoot head of the stalk was excised at the upper part of the 12th node from the aboveground part. The excised site was sterilized and disinfected with Benlate 500 times liquid (manufactured by DuPont, USA). 5 from excision
Five primary buds germinated from the lateral buds after a day. After the primary shoots had grown to about 8 expanded leaves, the shoot head above the 11th shoot from the germination base was excised. Resection site is Benlate 50
It was sterilized and disinfected with a 0-fold solution. Six secondary buds germinated from the lateral buds of the primary buds 7 days after the excision. After the secondary buds had grown to about 6 leaves, the shoot head at the 10th node from the germination base was excised. The excised site was sterilized in the same manner as above. Four tertiary buds germinated from the lateral buds of the secondary buds 7 days after the excision. After the tertiary buds grew to about 6 developed leaves, the shoot head at the 6th node from the germination base was excised. The excised site was sterilized in the same manner as above. Seven days after the excision, two quaternary buds germinated from the lateral buds of the tertiary bud. Each quaternary bud was grown, and when the number of leaves was 2 to 5, the quaternary bud was excised and separated from the mother stem so as not to damage other buds. Immediately after soaking the separated buds in water, the buds were selected according to the number of leaves and the thickness of the stem, and used as a base seedling.
From one sugar cane, 5 × 6 × 4 × 2 = 240 basic seedlings could be collected. The base seedlings were sterilized by immersing them in a solution of Benlate 500 times for one day.

The base seedling thus obtained was cut into leaves, and then a paper pot (2.3 cm in width, 2.3 cm wide) was filled with paddy soil (mixed sugar waste cake: soil = 2: 1).
The plant was planted at a depth of 2-3 cm in a height of 2.3 cm and a depth of 7.5 cm. The watering of the seedlings was sufficiently performed on the day of planting, but the leaves were moistened for 2 to 10 days after planting, and were not sprinkled after 11 days. After raising the seedlings for 3 weeks, they were planted in a field. At that time, the leaves were cut in advance and the heights of the seedlings were made uniform before planting. The growth rate of the planted seedlings was 100%.

The production and use of this sugar cane seedling have the following effects. i. Seedling efficiency from sugar cane is 10 to 20 times higher than conventional ii. It can be rooted, raised, and planted in the field, the growth rate is almost 100%, and the yield of sugar cane is greatly increased. Iii. It is possible to make the growth of sugar cane uniform by cultivating seedlings grown. IV. Can be done, the cultivation-harvesting work is easy, and the efficiency in mechanical harvesting is improved. Shortening the cultivation period in the field V. Vi. Can be planted at times other than the time of pest damage. Vii that can be planted avoiding rainy weather and drought. Machine can be planted, which enables labor saving.

[0015]

INDUSTRIAL APPLICABILITY The present invention enables easy and large-scale production of sugar cane seedlings and is extremely useful industrially.

[Brief description of drawings]

FIG. 1 is a photograph showing the morphology of sugar cane organisms.

FIG. 2 is a photograph showing the morphology of sugar cane organisms.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ayumi Yonemori 161-2 Shiraho, Ishigaki, Okinawa

Claims (1)

[Claims] 1. The following operations (1) to (4) are repeated at least once to form a large number of buds in sugar cane, and the buds are separated to obtain seedlings. Production method: (1) Germination of buds from cane lateral buds; (2) Growth of germinating buds; (3) Excision of the shoot head of the buds that have grown; (4) New buds from the lateral buds of the excised buds. Germinate.