CN101946628A - Rapid reproduction method of konjac - Google Patents

Abstract

The invention provides a rapid reproduction method of konjac. In the method, rhizome without flower buds in those years or annual-triennial konjac is induced for flowering by induction of gibberellin (GA3) on the flower buds of the konjac, thus lowering cost of obtaining female parent; and meanwhile the flowering season of male parent is regulated and controlled to meet the flowering season of the induced female parent for creating the chance of pollination by inhibition of low temperature on growth of the flower buds of the konjac. Compared with a natural condition, the method can help rapidly increase the female parent material in quantity with low cost; the male parent can be successively cultivated after low-temperature storage, thus ensuring that the male parent meets the flowering season of the induced female parent; and a great quantity of low-cost konjac seeds can be obtained by hybridization of a small amount of the male parent and a great amount of the induced female parent.

Description

A kind of konjaku quick-breeding method

Technical field

The present invention relates to agriculture breeding technique field, particularly relate to a kind of konjaku quick-breeding method.

Background technology

Konjaku is the high extraordinary economic crops of a kind of economic worth, and konjaku flour is extensive use of in industry such as food, medicine, oil, chemical industry, light textile, but present rivieri raw material runs out of the needs in market, and plantation had become the bottleneck of konjaku industry development already.Except konjaku takes place the soft rot easily, lacking a large amount of kind taros in the production is basic reasons.At present konjaku kind taro derives from asexual numerous kind of mode, promptly plant konjaku results commodity taro after, several in addition (generally in 10) root-like stock is as kind of a taro usefulness, numerous kind of coefficient is too low.And under the natural situation, the father and mother of konjaku sexual propagation originally all need the early stage of 3-4 and nourish and grow cultivation that inflorescence is just arranged, seed is tied in the pollination of also just may blooming, though each fruit ear has 50-300 seed, but because spended time is longer, and the cost height causes producing and can not adopt sexual propagation as numerous kind of mode always.Except above two kinds naturally numerous kind of mode, people are also carrying out tissue culture quick breeding research at present, and are still, still low owing to its efficient up to now, cost is high does not have to be applied in production reality.

Summary of the invention

The purpose of this invention is to provide a kind of konjaku quick-breeding method,, reduce breeding cost, create essential condition, improve the domestic and international competitiveness of konjaku industry for production provides a large amount of konjaku seeds to improve the efficient of konjaku sexual hybridization.

Technical thought of the present invention is: utilize the inducing action of gibberellin (GA3) to the konjaku bud, will not have the root-like stock or the living konjaku induced flowering of 1-3 of bud then, reduce obtaining maternal cost.Utilize the inhibitory action of low temperature to the growth of konjaku bud simultaneously, at the florescence of regulation and control male parent, the maternal flower synchronization that makes it and induce is created the pollination machine meeting, and is obtained a large amount of hybrid seeds.

The concrete technical scheme of a kind of konjaku quick-breeding method of the present invention is as follows:

The konjaku kind taro of getting the living wounded in the battle bud of 3-4 is stored in the 5-15 ℃ of refrigerated room March, plants mid-May as male parent; The konjaku kind taro that the 3-4 month root-like stock or 1-3 is given birth to, is planted as maternal after 0.5-3 hour through gibberellin (GA3) seed soaking of 10-1000mg/L; Early June, male parent produces pollinia, though the abortion of female parent male flower, female flower can be educated, and by artificial or insect pollination, obtains a large amount of sexual seeds.

The sexual quick-breeding method of konjaku of the present invention has the following advantages: under natural conditions, can increase maternal material in large quantities by fast and low-cost; Male parent by cryopreservation after the cultivation maternal flower synchronization that can guarantee and induce successively; Can obtain in a large number konjaku seed cheaply by a spot of male parent and a large amount of hybridization of female parent of inducing.

Embodiment 1:

20 early March of konjaku kind taro of getting 4 years living wounded in the battle buds are stored in 8 ℃ of refrigerated rooms, plant mid-May as male parent; After the gibberellin (GA3) of 10mg/L was soaked seed 3 hours, plant 1000 kilograms of 3 years living konjaku kind taros as maternal March; Early June, male parent produces pollinia, by the manual pollination, obtains a large amount of sexual seeds.

Embodiment 2:

30 early March of konjaku kind taro of getting 3 years living wounded in the battle buds are stored in 5 ℃ of refrigerated rooms, plant mid-May as male parent; After the gibberellin (GA3) of 500mg/L was soaked seed 2 hours, plant 10000 kilograms of 1 year living konjaku kind taros as maternal March; Early June, male parent produces pollinia, by insect pollination, obtains a large amount of sexual seeds.

Embodiment 3:

40 early March of konjaku kind taro of getting 4 years living wounded in the battle buds are stored in 15 ℃ of refrigerated rooms, plant mid-May as male parent; After the gibberellin (GA3) of 1000mg/L was soaked seed 0.5 hour, plant 15000 kilograms of root-like stocks as maternal April; Early June, male parent produces pollinia, by the manual pollination, obtains a large amount of sexual seeds.

Claims (1)

1. a konjaku quick-breeding method is characterized in that, concrete technical scheme is as follows:

The konjaku kind taro of getting the living wounded in the battle bud of 3-4 is stored in the 5-15 ℃ of refrigerated room March, plants mid-May as male parent; The konjaku kind taro that the 3-4 month root-like stock or 1-3 is given birth to, is planted as maternal after 0.5-3 hour through gibberellin (GA3) seed soaking of 10-1000mg/L; Early June, male parent produces pollinia, though the abortion of female parent male flower, female flower can be educated, and by artificial or insect pollination, obtains a large amount of sexual seeds.