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High-efficiency breeding method by using dwarf male-sterile wheat

A wheat and dwarf wheat technology is applied in the field of high-efficiency breeding of dwarf wheat, which can solve the problems of complex process and low wheat breeding efficiency, and achieve the effects of increasing yield and improving stability.

Inactive Publication Date: 2020-05-01
河北理查德农业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For this reason, the embodiment of the present invention provides a high-efficiency breeding method using dwarf wheat to solve the problems of low efficiency and complicated process of existing wheat breeding

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The present embodiment is a method for efficient breeding of dwarf wheat, which comprises the following steps:

[0025] (a) Select a dwarf wheat variety (Longxuan 987) as the basic population for recurrent selection;

[0026] (b) By controlling the pollen source, 17 excellent wheat germplasms were continuously introduced into the basic population for recurrent selection to obtain a recurrent selection population, wherein the number of recurrent selections was 6 times, and the amount of excellent germplasm wheat introduced into the recurrent selection in each round accounted for 1% of the population The genetic share is 16%, and the percentage of poor fertile plants eliminated in each round of recurrent selection process is 8%. Excellent germplasm wheat is wheat with excellent genetic background adapted to the target area and carrying non-allelic genes that affect the target traits ;

[0027] (c) Self-cross the selected population for one generation to obtain an improve...

Embodiment 2

[0029] The present embodiment is a method for efficient breeding of dwarf wheat, which comprises the following steps:

[0030] (a) Select a dwarf wheat variety as the basic population for recurrent selection;

[0031] (b) By controlling the pollen source, 22 excellent wheat germplasms were continuously introduced into the basic population for recurrent selection to obtain a recurrent selection population, wherein the number of recurrent selections was 5 times, and the amount of excellent germplasm wheat introduced into the recurrent selection in each round accounted for 1% of the population The genetic share is 12%, and the percentage of poor fertile plants eliminated in each round of recurrent selection process is 7%. Excellent germplasm wheat is wheat with excellent genetic background adapted to the target area and carrying non-allelic genes that affect the target traits ;

[0032] (c) The round selection population is self-crossed for 2 generations to obtain an improved po...

Embodiment 3

[0034] The present embodiment is a method for efficient breeding of dwarf wheat, which comprises the following steps:

[0035] (a) Select a dwarf wheat variety as the basic population for recurrent selection;

[0036] (b) By controlling the pollen source, 20 excellent wheat germplasms were continuously introduced into the basic population for recurrent selection to obtain a recurrent selection population, wherein the number of recurrent selections was 6 times, and the amount of excellent germplasm wheat introduced into the recurrent selection in each round accounted for 1% of the population The genetic share is 15%, and the percentage of poor fertile plants eliminated in each round of recurrent selection process is 7%. Excellent germplasm wheat is wheat with excellent genetic background adapted to the target area and carrying non-allelic genes that affect the target traits ;

[0037] (c) Self-cross the selected population for one generation to obtain an improved population, a...

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Abstract

The invention discloses a high-efficiency breeding method by using dwarf male-sterile wheat. The breeding method includes the following steps: (a) selecting one dwarf male-sterile wheat as a basic population for recurrent selection; (b) controlling a pollen source, introducing excellent-quality wheat continuously into the basic population, and performing recurrent selection so as to obtain a recurrent selection population; and (c) performing selfing on the recurrent selection population so as to obtain an improved population, and selecting excellent and fertile plants from the improved population as a new variety. According to the breeding method, recurrent selection is performed by using dwarf male-sterile wheat, and continuous introduction of excellent-quality wheat is performed, so thatexcellent genes of different wheat parents are integrated into the new variety, the yield, quality, resistance to diseases and pests, stress resistance and other performance of the new variety are improved, and a large number of recurrent selection populations which have excellent genetic backgrounds and carry target traits are bred; and then homozygous stability is achieved through selfing, so that the stability of new variety breeding is improved.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of wheat breeding, in particular to a method for high-efficiency breeding of dwarf wheat. Background technique [0002] The achievement of wheat breeding largely depends on the genetic diversity of wheat germplasm resources and the depth of its research. In the development of modern international wheat breeding, there are two examples of outstanding achievements in the use of germplasm resources, which are very inspiring for the effective use of germplasm resources in breeding; Gaines, the variety with the highest wheat yield record in the world, laid the foundation for the wheat yield revolution in Mexico; the second is to use the germplasm PI178383 from Turkey to breed a series of varieties resistant to stripe disease and other diseases in the northwest of the United States; wheat breeding methods These include hybridization of different parents and marker-assisted selection. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02A01H1/04
CPCA01H1/02A01H1/04
Inventor 吴哲贾银锁赵璞李良英贾璇张鑫
Owner 河北理查德农业科技有限公司