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Producing method of plant hybrid

A production method and technology of hybrids, applied in botany equipment and methods, plant genetic improvement, application, etc., can solve the problems of self-bred seeds affecting purity, etc.

Inactive Publication Date: 2002-11-27
湖南杂交小麦研究中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to use the breeding method to solve the problem that self-bred seeds affect the purity of all plant two-line, chemical andricidal, and physical male-killing hybrid seed production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] [Example 1] Carry out chemical emasculation to the water wheat high-yield variety 9205, outcross with the male parent 1604, plant according to the method for hybrid wheat seed production, and produce hybrids, and the obtained hybrid F and the seeds F2 of the F1 generation can be used as production Seeds are planted in the Huanghuai wheat region and the northern part of the southern wheat region in China.

Embodiment 2

[0009] [Example 2] The rice photothermosensitive male sterile line 94-21 spring-sowed male sterile is used as the female parent, and the wide-compatibility japonica rice variety Lunzhe 139 (male parent) is used according to the method for hybrid rice seed production, and the parental parent is lined at 1:6 Alternate planting, outcrossing, hybrid F1 and F1 generation seeds were planted as middle and late rice in the Yangtze River Basin.

Embodiment 3

[0010] [Example 3] The awnless variety 21688 (the awnless trait is dominant) is used as the female parent after chemical emasculation, and is outcrossed with Yunong 516. According to the production of hybrid wheat seeds and methods, it is planted alternately with the female parent to produce hybrids. The obtained hybrids were planted in the wheat regions of the Yangtze River Basin and South China.

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PUM

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Abstract

The new method selects first-filial generation and the breed with less contour difference to the female parent as parent of cross breeding, and plants the two lines of hybrid in the space-time with normal female parent fructification to raise the uniformity of first-filial generation and utilize the vigor of second-filial generation.

Description

a technical field [0001] The invention relates to a production method of plant hybrids. Two background technology [0002] Two-line method (EMS) and chemical detasseling (CHA) are the most valuable methods for producing plant hybrids, while physical detasseling (including artificial detasseling, high temperature detasseling, low temperature detasseling, submerged detasseling, Detasseling methods other than chemical methods such as drought detasseling) are methods that will show more and more vitality with the improvement of the level of agricultural modernization. Since Shi Mingsong discovered the rice photosensitive sterile material in Nongken 58 in 1973, a lot of research has been done on the two-line hybrid breeding of rice, sorghum, rape, barley, corn, soybean and other crops at home and abroad, and a large number of ecological breeding have been selected and bred. CMS, a batch of two-line hybrid combinations have been bred. However, because the male fertility of ecolog...

Claims

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Application Information

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IPC IPC(8): A01H1/02
Inventor 何觉民余华孙海涛
Owner 湖南杂交小麦研究中心
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