Summary of the invention
The object of the present invention is to provide and a kind ofly can effectively shorten cultivation period, reduce the chance of viral cross-infection, improve generation method in the bottle of oriental hybrid lily detoxified small seed ball of lily ball quality.
The present invention finishes by following technical proposal: generation method in a kind of bottle of oriental hybrid lily detoxified small seed ball is characterized in that through the following step:
1), the selection of explant and sterilization: select no damage by disease and insect, robust growth, do not detect the lily ball of CMV (cucumber mosaic virus) and LSV (lily conceals syndrome virus), under 3~6 ℃ low temperature, dark condition, preserve the back taking-up of 6~8 weeks, stripping scale limit, limit is washed with running water, after removing outside 2~3 layers of scale that wraps up consolidation not, with concentration is that 0.1% washing powder water logging bubble is after 2~5 minutes, clean up mercuric chloride (Hgcl 0.1~0.2% with running water
2) sterilized 15~25 minutes in the solution, in 1~3% liquor natrii hypochloritis, sterilized 10~15 minutes then, with aseptic washing 3~5 times;
2), inducing culture: under aseptic condition, the scale stripping and slicing after the sterilization being inoculated in the following inducing culture and cultivating, is 25 ± 2 ℃ in temperature, light application time 10~12h/d, under the environmental condition of intensity of illumination 2000~3000Lx, behind cultivation 20~25d, generate indefinite bud in incision:
The MS basic culture solution
6-benzylaminopurine (6-BA) 1.0~2.0mg/L
Methyl (NAA) 0.1~0.5mg/L
Sucrose 30000~40000mg/L
Agar 5000~5500mg/L
pH 5.5~6.0
3), obtain the detoxification stem apex: above-mentioned indefinite bud of inducing generation after 36~40 ℃ of condition therapeutic method to keep the adverse qi flowing downward heat are cultivated 10~30 days, is stripped the stem apex that obtains 0.2~0.5mm under anatomical lens;
4), enrichment culture: under aseptic condition, the detoxification stem apex that step 3) is obtained changes in the following proliferated culture medium:
The MS basic culture solution
6-benzylaminopurine (6-BA) 1.0~2.0mg/L
Methyl (NAA) 0.2~0.5mg/L
Sucrose 30000~40000mg/L
Agar 5000~6000mg/L
pH 5.5~6.0
In temperature is 26 ± 2 ℃, and light application time 10~12 hours/day under the condition of intensity of illumination 1500~2000Lx, is cultivated 20~25d, makes 1 stem apex grow into a plurality of indefinite buds;
5), successive transfer culture: the indefinite bud of above-mentioned propagation divided be cut to simple bud or 2~3 clump under aseptic condition, insert in the same proliferated culture medium, under identical culture environment, cultivate, can obtain a large amount of unrooted indefinite buds, the leaf look of propagation seedling is dark green, robust growth, base portion are expanded into bulb shape;
6), directly generate detoxified small seed ball in the bottle: the indefinite bud that subculture is formed cuts blade, and base portion and scale stripping and slicing insert in the following green-ball medium:
The MS basic culture solution
Methyl (NAA) 0.05~0.1mg/L
Sucrose 80000~120000mg/L
Agar 4500~6000mg/L
Active carbon 500~600mg/L
pH 5.5~6.0
In temperature is 20 ± 2 ℃, under the dark condition, cultivates 60~70d, directly generates diameter 0.8~1.2cm around the indefinite bud stripping and slicing reaches, the small seed ball of girth diameter 3.0~3.5cm, and each stripping and slicing can generate 2~4 of small seed balls.
The invention solves following technological difficulties:
1, long at the oriental hybrid lily balling-up cycle, virus is the difficult point of accumulation easily, the present invention directly generates small seed ball by said method in bottle, its look white, the scale consolidation, on-bladed can directly be planted down behind the bottle outlet, and diameter, girth diameter have reached conventional tissue cultivating seedling at the small seed ball of field growing more than 3 months, shorten the cultivation period of detoxification kind ball greatly, reduced production cost.Small seed ball on-bladed behind the bottle outlet is easy to plant preceding refrigeration and handles simultaneously, and survival rate is higher after the field planting.
2, in Plant Tissue Breeding, the plant in the blake bottle is all based on heterotrophic growth, and sugar is the main source that plant carries out the carbonizable substance accumulation.Second difficult point that the present invention solves is: by add the sucrose (8~12g/L) of high concentration in solid or liquid nutrient medium, the soluble sugar that indefinite bud is absorbed is accumulate in the small seed ball rapidly, detoxified small seed ball in the bottle has obtained high-speed rapid growth, has improved the quality of small seed ball simultaneously.
3, in the group of routine training detoxic seedling is cultivated, indefinite bud need induce the cultivation of the plant that takes root again behind the blade.Yet usually because the deficiency of the interior CO2 gas of blake bottle, make the tissue cultivating seedling blade in the blake bottle not only can not normally carry out photosynthesis accumulation photosynthetic product, also opposite because the existence of blade has consumed the nutrient that base portion seed ball is accumulated, the growth of group training small seed ball is suppressed.In addition, the illumination that provides in the conventional condition of tissue culture only is that the chlorophyll in the maintenance group training blade generates, and does not have value in the small seed ball of lily generates.Therefore in the present invention, the 3rd difficult point that solves is: take to carry out the cultivation of detoxified small seed ball under complete dark condition, suppress leaf growth, avoid nutrient consumption, thereby the nutrient in the medium all is accumulate in the small seed ball, has improved the growth rate of small seed ball.
4, the present invention is at different cultivation stages, according to different culturing purposes, key factors such as medium, sucrose concentration, interpolation active carbon and condition of culture are regulated and control, both reached high efficiently multiplying, guaranteed the quality of small seed ball again, especially in the direct green-ball stage, adopt complete dark condition to cultivate 60~70d, not only saved the consumption of the energy, and culture environment approaches the environment that the scale ball " is buried sheet " and generates in the lily cuttage, handle easily behind the seed ball bottle outlet, transplanting survival rate is high and be beneficial to late growing stage.
5, the present invention utilizes in the tissue culture clean environment, makes a bottle interior detoxified small seed ball not have damage by disease and insect, and transplant survival is easy, is convenient to the international even at home interchange of lily germ plasm resource, has avoided the exchange of sick worm by germplasm that great outburst takes place.
The present invention has following advantage and effect: by directly generating the detoxified small seed ball technology in the bottle of oriental hybrid lily; the production routine of whole lily ball is adjusted and optimize; simplified the cultivation program of detoxification kind ball; shortened the cultivation time of oriental hybrid lily detoxification greatly; when having reduced production cost, improved kind ball quality; strengthened the homemade market competitiveness, be suitable for the large-scale production of oriental hybrid lily detoxification kind ball from the breeding ball.
The present invention studies the key factor that directly generates in this step of detoxified small seed ball in the oriental hybrid lily bottle emphatically, and specifically, just from the regulation and control two broad aspect research experiment of concentration of sucrose and culture environment, its result is reported as follows:
1, test material: the kind ball of getting oriental hybrid lily kind " Tiber " is as supplying the examination material.
2, method and result
The same embodiment of whole link of the acquisition of the selection of explant, sterilization, detoxification stem apex and propagation, subculture, primary study the direct generation of detoxified small seed ball in bottle.
(1) sucrose concentration is to the influence of small seed ball generation in the bottle
Test different sucrose concentrations to directly generating the influence of small seed ball in the bottle, designed 2%~14% a series of gradient concentration, under dark fully condition of culture, cultivate 60d, observe the growing state and the seed ball size of seed ball, the measurement of average diameter is after measuring the diameter of 20 small seed balls with ruler, average, the measurement of average girth diameter measures numerical value with ruler more earlier with the maximum of thin cotton thread around the seed ball, get the mean value of 20 small seed balls equally, result of the test sees Table 1.
By above comparative test, draw sucrose concentration 10% when following, the increase and the sucrose concentration of seed ball size are proportionate, all reached optimum to 10% o'clock every index, the seed nodule number amount of production is moderate, and diameter and girth diameter have reached maximum, after surpassing 10%, though the every formed seed nodule number of explant amount increases to some extent, the index of single seed ball descends on the contrary to some extent, and the shape of growing thickly, be unfavorable for the separation and the transplanting of seed ball, to 14% o'clock, existing part seed ball distorted flat.Therefore, in the Orient in the lily bottle directly in the method for generation detoxified small seed ball, more suitable to add 8%~12% sucrose in water ratio.
(2) regulation and control of culture environment
Adopt the above-mentioned the suitableeest sucrose concentration that mixes, stripping and slicing is inserted in the green-ball medium of MS+NAA0.1+ sucrose 10%+ active carbon 0.6%, different below condition of culture (mainly being the adjustment of illumination), temperature is to cultivate in 20 ± 2 ℃ the environment, measure every index of seed ball behind the 60d, concrete outcome sees Table 2.
Table 1: the upgrowth situation of different sucrose seeding down ball
Sucrose concentration % | The every average small seed ball quantity that explant generates | Average diameter cm | Average girth diameter cm | Upgrowth situation |
2 | 1.1 | 0.68 | 0.78 | Radical is few and thick long, 2~3 on leaf is arranged on every young plant, the scale parcel of seed ball is a solid, not like normal lily bulb |
4 | 1.6 | 0.80 | 1.12 | Radical is few and thick long, 2~3 on leaf is arranged, the visible squamose differentiation of seed ball on every young plant |
6 | 2.3 | 0.92 | 2.02 | Root is few and elongated, and 1~2 on leaf is arranged on every young plant, and the scale of seed ball differentiation is more, approaches normal bulb |
8 | 2.8 | 1.01 | 3.17 | Root is many and elongated, and 1~2 on leaf is arranged on every young plant, and each seed ball differentiates 10~15 scales |
10 | 3.7 | 1.12 | 3.45 | Root is many and elongated, does not form blade, and each seed ball differentiates 15~20 scales, scale carnification, white |
12 | 4.1 | 0.96 | 2.58 | Root is slightly lacked, and does not form blade, and each seed ball differentiates 10~12 scales, and quantity is more, but smaller |
14 | 5.8 | 0.78 | 1.07 | Root is slightly lacked, do not formed blade, each seed ball only differentiates 6~7 scales, the seed ball is from giving birth to shape, shaped flat and fractional distortion, quantity is a lot, but smaller |
The condition of culture that finally draws the generation of oriental hybrid lily detoxified small seed ball by above test is better to carry out culture effect under the condition of complete dark, and the seed nodule number amount of generation is moderate, and girth diameter is the highest in test combinations greater than the ratio of 3cm simultaneously, seed ball Functionality, quality and appealing design.
Table 2: the upgrowth situation of detoxified small seed ball under the different condition of culture
Light intensity lx | Light application time h/d | The every average small seed ball quantity that explant generates | Girth diameter is greater than the shared ratio % of 3 cm seed balls | Upgrowth situation |
2000 | 24 | 4.02 | 34 | The seed ball is dark green and some is rubescent, the small seed ball quantity that forms is many, but girth diameter is in the majority less than the quantity of 1 cm, some greening of root, 2~3 on leaf is arranged, dark green leaf color on every young plant |
2000 | 12 | 4.56 | 61 | The seed ball is dark green, and the small seed ball quantity of formation is many, and 1~2 on leaf is arranged on every young plant, and the leaf look light is slightly |
0 | 0 | 3.42 | 87 | Seed ball white, more sturdy, the scale consolidation, the small seed ball quantity of formation is moderate, on-bladed |
Embodiment
For flesh and blood of the present invention is described better, provide embodiments of the invention below, but content of the present invention is not limited in these.
Embodiment 1
1), the selection of explant and sterilization: preferred growth stalwartness, blooming property Like is good, no damage by disease and insect, the kind ball of the oriental hybrid lily kind " Tiber " of virus-free symptom performance is as explant, before drawing materials, with the bulb of preparing inoculation low temperature at 4 ℃, dark condition is the back taking-up of 8 week of storage down, stripping scale limit, limit is washed with running water, after removing bulb crust and outside 2~3 layers of scale that wraps up consolidation not, with concentration is 0.1% washing powder water logging bubble 2 minutes, running water cleans up, cut a little top and base portion, shell into the single scale of band portion basal disc, mercuric chloride (Hgcl 0.1%
2) sterilization 25 minutes in the solution, sterilization is 15 minutes among 1% the liquor natrii hypochloritis, behind the aseptic water washing 3 times, and scale stripping and slicing inoculation;
2), inducing culture: under aseptic condition, the scale stripping and slicing after the sterilization is inoculated in the following inducing culture:
The MS basic culture solution
6-benzylaminopurine (6-BA) 1.0mg/L
Methyl (NAA) 0.1mg/L
Sucrose 30000mg/L
Agar 5000mg/L
pH 5.5
In temperature is 25 ± 2 ℃, and light application time 12h/d under the environmental condition of intensity of illumination 2000Lx, cultivates 25d, directly generates indefinite bud in incision, or forms indefinite bud by the callus dedifferentiation;
3), the acquisition of detoxification stem apex: the above-mentioned indefinite bud of generation of inducing was cultivated 30 days 36 ℃ of condition therapeutic method to keep the adverse qi flowing downward heat, under anatomical lens, stripped the detoxification stem apex that obtains 0.2~0.5mm;
4), enrichment culture: under aseptic condition, with the 3rd) the detoxification stem apex of step acquisition changes in the following proliferated culture medium:
The MS basic culture solution
6-benzylaminopurine (6-BA) 1.0mg/L
Methyl (NAA) 0.2mg/L
Sucrose 30000mg/L
Agar 5000mg/L
pH 5.5
In temperature is 26 ± 2 ℃, and light application time 10 hours/day under the condition of intensity of illumination 2000Lx, is cultivated 20d, can make stem apex be grown to indefinite bud, and can on average breed by 1 is 4;
5), successive transfer culture: with the 4th) the resulting indefinite bud of step propagation divides under aseptic condition and is cut to one clump of simple bud or 2~3 bud, insert in the same proliferated culture medium, under identical culture environment, cultivate, can obtain a large amount of unrooted indefinite buds, the leaf look of propagation seedling is dark green, robust growth, base portion are expanded into bulb shape;
6), directly generate detoxified small seed ball in the bottle: the indefinite bud that subculture is formed cuts blade, and base portion and scale stripping and slicing insert following green-ball medium:
The MS basic culture solution
Methyl (NAA) 0.05mg/L
Sucrose 80000mg/L
Agar 4500mg/L
Active carbon 500mg/L
pH 5.5
In temperature is 20 ± 2 ℃, under the dark condition, cultivates 70d, and the indefinite bud stripping and slicing can directly generate small seed ball around reaching, and average diameter reaches 1cm, and average girth diameter reaches more than the 3.0cm, and each stripping and slicing on average can generate 2.8 of small seed balls.
Embodiment 2
1), preferred growth stalwartness, good, the no damage by disease and insect of the proterties of blooming, the kind ball of the oriental hybrid lily kind " Acapulco " of virus-free symptom performance is as explant, before drawing materials, with the bulb of preparing inoculation low temperature at 6 ℃, dark condition is the back taking-up of 8 week of storage down, stripping scale limit, limit is washed with running water, after removing bulb crust and outside 2~3 layers of scale that wraps up consolidation not, steeped 5 minutes with 0.1% washing powder water logging, running water cleans up, cut a little top and base portion, shell into the single scale of band portion basal disc, mercuric chloride (Hgcl 0.2%
2) handled 15 minutes in the solution, handled 10 minutes among 3% the liquor natrii hypochloritis, behind the aseptic water washing 5 times, scale stripping and slicing inoculation;
2), inducing culture: under aseptic condition, the scale stripping and slicing after the sterilization is inoculated in the following inducing culture:
The MS basic culture solution
6-benzylaminopurine (6-BA) 2.0mg/L
Methyl (NAA) 0.5mg/L
Sucrose 40000mg/L
Agar 5500mg/L
pH 6.0
In temperature is 25 ± 2 ℃, and light application time 10h/d under the environmental condition of intensity of illumination 3000Lx, cultivates 20d, directly generates indefinite bud in incision, or forms indefinite bud by the callus dedifferentiation;
3), the acquisition of detoxification stem apex: with the 2nd) indefinite bud that produces of one-step inducing makes material, in the lily plantation, produce the bigger virus disease of harm, cultivate 10 days by 40 ℃ of gas heat after, under anatomical lens, strip the detoxification stem apex that obtains 0.2~0.5mm;
4), enrichment culture: under aseptic condition, with the 3rd) the detoxification stem apex of step acquisition changes in the following proliferated culture medium:
The MS basic culture solution
6-benzylaminopurine (6-BA) 2.0mg/L
Methyl (NAA) 0.5mg/L
Sucrose 40000mg/L
Agar 6000mg/L
pH 6.0
In temperature is 26 ± 2 ℃, and light application time 12 hours/day under the condition of intensity of illumination 1500Lx, is cultivated 25d, makes stem apex be grown to indefinite bud, and can on average breed by 1 is 5;
5), successive transfer culture: with the 4th) the resulting indefinite bud of step propagation divides under aseptic condition and is cut to one clump of simple bud or 2~3 bud, insert in the same proliferated culture medium, under identical culture environment, cultivate, can obtain a large amount of unrooted indefinite buds, the leaf look of propagation seedling is dark green, robust growth, base portion are expanded into bulb shape;
6), directly generate detoxified small seed ball in the bottle: the indefinite bud that subculture is formed cuts blade, and base portion and scale stripping and slicing insert following green-ball medium:
The MS basic culture solution
Methyl (NAA) 0.1mg/L
Sucrose 120000mg/L
Agar 6000mg/L
Active carbon 600mg/L
pH 6.0
In temperature is 20 ± 2 ℃, under the dark condition, cultivates 70d, directly generates little young ball around the indefinite bud stripping and slicing reaches, and average diameter is 0.96cm, and average girth diameter 2.58cm on average can generate 4 of small seed balls.