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Crop genetic breeding method for high-efficient utilization of heterosis

A genetic breeding and crop technology, applied in the field of crop genetics and breeding, to achieve the effects of efficient selection, improved breeding efficiency, and improved breeding accuracy and efficiency

Active Publication Date: 2020-10-16
江西省农业科学院作物研究所
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AI Technical Summary

Problems solved by technology

With the development of high-throughput marker technology, genome-wide selection has been rapidly applied to the utilization of crop heterosis, and molecular markers covering the entire genome can be used to effectively predict complex quantitative traits. Applied to crop genetics and breeding

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Embodiment 1 Rapeseed Genetic Breeding Method

[0046] 1 mutual reincarnation selection

[0047] 1.1 Parent selection

[0048]Three maintainer lines (Zhongshuang 11, Ganyou 18, Huyou 21) and restorer lines (283B, Huashuang 128, R10) of strong dominant hybrid combinations of rapeseed were respectively selected, and the breeding parents (tested 1000 test cross combinations were prepared for the maintainer line and the restorer line respectively. The breeding parents corresponding to the top 80 testcross combinations in the seed yield ranking were respectively selected through the yield test, and the breeding parents obtained by testcrossing with the maintainer line constituted the basic material for the recurrent selection population of the restorer line, and the breeding parents obtained by testcrossing with the restorer line It constitutes the basic material of the recurrent selection population of the maintainer line.

[0049] 1.2 Reincarnation Selection Basic Group...

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Abstract

The invention relates to a crop genetic breeding method for high-efficient utilization of heterosis. Utilization of heterosis currently is that breeding of hybrid parents and extensive testcross are mainly used; reciprocal recurrent selection is also applied to hybrid breeding of crops, in particular corns, recently; with the development of a high-throughput labelling technology, whole genome selection is rapidly applied in crop heterosis utilization; effective prediction on complex quantitative traits is realized by utilization of a molecular marker covering the whole genome; but, genomic selection and reciprocal recurrent selection are not applied to crop genetic breeding at the same time currently. The invention provides that a genomic selection method and a reciprocal recurrent selection technology are applied to crop heterosis utilization at the same time, so that a heterosis utilization method, which is high-efficiency to select, easy to implement and low in material cost and manpower use cost, is provided; furthermore, the invention innovatively provides that a genomic selection technology is applied to selection of basic parents of reciprocal recurrent selection population;simultaneously, the breeding efficiency is increased by utilization of a chemical emasculation technology; and thus, the breeding accuracy and high efficiency are greatly increased.

Description

technical field [0001] The invention relates to the field of crop genetics and breeding, in particular to a crop genetics and breeding method for efficient utilization of heterosis. Background technique [0002] Yield improvement is an effective way to ensure the stability of total crop output, and increasing crop yield per unit area is crucial to increasing planting income. The improvement of yield depends on the cultivation of high-yield varieties, and the use of heterosis is the most effective means of high-yield crop breeding. heterosis refers to the hybrid F 1 It is superior to its homozygous parents in terms of viability, growth potential, fecundity, yield, quality, stress resistance, and adaptability. Since the introduction of heterosis, it has become the main means to increase the yield of major crops such as grain, oil, cotton, fruits and vegetables, among which the utilization of heterosis in maize is one of the most important applications of genetics in agricult...

Claims

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Application Information

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IPC IPC(8): A01H1/02A01H1/04A01H1/06
CPCA01H1/02A01H1/04A01H1/06
Inventor 陈伦林李书宇丁戈熊洁黄杨宋来强
Owner 江西省农业科学院作物研究所
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