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Process for preparing hybridization buckwheat

A production method and technology for buckwheat, applied in the field of hybrid buckwheat production, can solve the problems of low seed setting rate of natural hybrids, unstable heredity, and no hybrid buckwheat, and achieve simple hybridization methods, strong heterosis, and good performance of hybrid varieties. Effect

Inactive Publication Date: 2007-11-28
GUIZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the common buckwheat varieties popularized and planted in production are mixed populations with unstable genetics, and the yield is low. Generally, the yield per mu is only about 50-100kg.
The main reasons are self-incompatibility, low seed setting rate of natural hybrids, and unstable
However, there is no report on the production of hybrid buckwheat

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1 Self-fertile pure line cultivation:

[0015] The wild buckwheat material F.esculentum var.homotropicum, which is self-fertile and shattering with the same style, is selected as the male parent, and the German buckwheat Sobano variety, which is self-incompatible and non-shattering, is used as the female parent for sexual crossing. The hybrid F1 generation can obtain self-fertilization seeds due to self-fertilization of the same style of style, and select excellent plants in the F2 population of its offspring, which retain both parent-cross fertility and non-shattering, and let them further self-fertilize until the agronomic traits are obtained Good self-fertility pure line "Tianzi 21"

[0016] Since the sweet buckwheat pure line "Tianzi 21", which is self-fertile and seed-shattering, has been obtained, in the future production of the sweet buckwheat pure line, it is only necessary to combine the long-style plants of the sweet buckwheat variety with "Tianzi 2...

Embodiment 2

[0017] The cultivation method of embodiment 2 inbred line Buckwheat Fengtian No. 1

[0018] Due to the self-incompatibility of common buckwheat, there are two types: long style (short stamen) and short style (long stamen), and they can only bear fruit if they pollinate each other. Using the hybrid progeny populations of different common buckwheat varieties or lines as materials, such as the hybrid progeny populations of Guizhou sweet buckwheat and German variety Sobano, the long style (short stamen) type plants and short style (long stamen) type plants with similar morphological characteristics in the population were selected. Plants are paired and pollinated with each other under the condition of isolation and pest control, and the resulting seeds are sown to produce the next generation. The next generation population adopts a similar method to pollinate the next generation of seeds until the traits of the offspring population are stable and no obvious genetic segregation occu...

Embodiment 3

[0019] Embodiment 3 Inbred Line Pingqiao No. 2 Cultivation Method

[0020] Select sweet buckwheat varieties with similar morphological characteristics, such as long style (short stamen) type plants and short style (long stamen) type plants of Pingqiao No. 2, under the condition of isolation and insect prevention, pair pollination with each other, and the resulting seeds will produce the next generation after sowing , the next generation population adopts a similar method to pollinate the next generation of seeds until the population traits are stable and no obvious genetic segregation occurs, that is, the Pingqiao 2 common buckwheat inbred line is formed.

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Abstract

The present invention is process of breeding buckwheat hybrid with inbred buckwheat lines or inbred buckwheat line and pure buckwheat line. The process of the present invention is simple, and is especially suitable for producing buckwheat hybrid. The obtained buckwheat hybrid has heterosis, selfing fertility and 30 % over raised yield.

Description

technical field [0001] The invention relates to a buckwheat production method, in particular to a hybrid buckwheat production method. Background technique [0002] Common buckwheat (Fagopyrum esculentum) is the main cultivated species in the genus Buckwheat, distributed in almost all countries where grain crops are grown. It is planted in both the north and the south of our country. The common buckwheat varieties popularized and planted in production are all mixed populations with unstable heredity, and the yield is low, generally only about 50-100kg per mu. The main reasons are self-incompatibility, low seed setting rate of natural hybrids, and instability. The patent application with the patent application number CN200610037698.X discloses a breeding and seed production method of hybrid rice II You 42. In this method, Zhenhui 129 is selected as the female parent and Zhenhui 084 is used as the male parent to obtain F0 seeds, and then selfing 5 to 7 generations, self-cros...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02A01H1/04A01H5/00
Inventor 陈庆富
Owner GUIZHOU NORMAL UNIVERSITY
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