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Method for breeding male sterile line and maintainer line of wheat

A technology of male sterile line and maintainer line, applied in botany equipment and methods, plant genetic improvement, angiosperm/flowering plants, etc. Use and other issues

Active Publication Date: 2008-12-17
冯树英 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The research on the utilization of wheat heterosis in the world has lasted for more than 50 years. In the early 1960s, a variety of sterile lines such as "T" type male sterile lines were bred by means of distant hybridization of wheat, and three-line matching was realized. However, these sterile lines So far, the CMS line has not been widely used in production. The main problem is that it is difficult to restore the fertility of the CMS line with common wheat, and its recovery source is relatively narrow, which seriously limits the research and development of the CMS line and its isotype use
Practice has proved that it is easy to isolate male sterile plants through distant hybridization of wheat, and then breed them into sterile lines, but most of these sterile lines are difficult to restore by hexaploid common wheat

Method used

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  • Method for breeding male sterile line and maintainer line of wheat
  • Method for breeding male sterile line and maintainer line of wheat
  • Method for breeding male sterile line and maintainer line of wheat

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Using the following materials as parents, cultivate the sterile line FA and the maintainer line FB:

[0031] 1. Parent 1: D4, there are a small amount (5%) of sterile plants in the population, the sterility of the sterile plants is 20%, and the closed glume pollination is poor.

[0032] 2. Parent 2: Baofeng 7228, there are a small amount (10%) of sterile plants in the population, the sterile plants have a sterility of 35%, small anthers, and less pollen.

[0033] 3. Parent 3: 83991, there are a small amount (9%) of sterile plants in the population, the sterile plants have a sterility of 20%, small anthers, and less pollen.

[0034] 4. Parent 4: 88245, common hexaploid wheat, used as a recurrent parent.

[0035] The selection process (eg figure 1 shown):

[0036] Using D4 as the female parent and Baofeng 7228 as the male parent, crossbreed to obtain F1; take the F1 as the female parent and 83991 as the male parent, crossbreed to obtain FF1; take the FF1 as the female ...

Embodiment 2

[0050] The following materials were used as parents to breed the sterile line JA (also known as Jing A) and the maintainer line JB:

[0051] 1. Parent 1: D4, there are a small amount (5%) of sterile plants in the population, the sterility of the sterile plants is 20%, and the closed glume pollination is poor;

[0052] 2. Parent 2: JH95, there are a small amount (7%) of sterile plants in the population, the sterile plants have a sterility degree of 15%, small anthers, and poor pollination of closed glumes, and are used as recurrent parents.

[0053] The selection process (eg figure 2 shown):

[0054] Take D4 as the female parent and JH95 as the male parent, and cross to obtain F1; use F1 as the female parent and JH95 as the male parent to backcross to obtain BC1; use the sterile plant in BC1 as the female parent, and use JH95 as the male parent Backcross to get BC2; use the sterile line in BC2 as the female parent and JH95 as the male parent. Plant the backcross progeny pop...

Embodiment 3

[0065] Using the following materials as parents, cultivate the sterile line ZA (also known as Zi A) and the maintainer line ZB:

[0066] 1. Parent 1: ZC56, the grain color is medium purple, there are a small amount (20%) of sterile plants in the population, the sterility of the sterile plants is 25%, and the anthers are small.

[0067] 2. Parent 2: ND338, a hexaploid white-grained wheat variety, with a small amount (15%) of sterile plants in the population, sterile at the tip of the panicle, with a sterility degree of 15%, and used as a recurrent parent.

[0068] The selection process (eg image 3 shown):

[0069] ZC56 as the female parent and ND338 as the male parent were crossed to obtain F1; F1 was used as the female parent and ND338 was used as the male parent to backcross twice. Plant the backcross progeny population (4000 plants), select sterile and fertile plants from the backcross progeny population, test cross in pairs, and plant the first generation of test cross. ...

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Abstract

The invention specifically relates to a wheat sterile line and a maintainance line seed selection method. The invention adopts nearly related hybridization among ordinary breeds of sixfold wheat to cultivate wheat sterile lines and maintainance lines, thereby cultivating sterile lines which can finely keep sterile and also finely reinstate fertility; both the sterile degree and the sterile rate are greater than 95%.

Description

technical field [0001] The invention relates to the field of crop breeding, in particular to a breeding method for a wheat sterile line and its maintainer line. Background technique [0002] Using heterosis to increase crop yield and improve crop quality is one of the most advanced and economical core technologies in the world today. The research on the utilization of wheat heterosis in the world has lasted for more than 50 years. In the early 1960s, a variety of sterile lines such as "T" type male sterile lines were bred by means of distant hybridization of wheat, and three-line matching was realized. However, these sterile lines So far, the CMS line has not been widely used in production. The main problem is that it is difficult to restore the fertility of the CMS line with common wheat, and its recovery source is relatively narrow, which seriously limits the research and development of the CMS line and its isotype use. Practice has proved that it is easy to isolate male...

Claims

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Application Information

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IPC IPC(8): A01H1/02A01H1/04A01H5/12
Inventor 冯树英冯姗
Owner 冯树英
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