Method for breeding sorghum restorer Ji R5062 through sister hybridization

A technology of sister crossing and restorer lines, applied in the field of breeding sorghum restorer lines by using sister crosses, can solve the problems of long breeding cycle

Inactive Publication Date: 2012-09-19
JILIN ACAD OF AGRI SCI
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Problems solved by technology

[0003] The variation of sorghum hybridization is very rich. Using the traditional method of artificial emasculation hybridization, not only the breeding cycle is long, it takes many years and multiple generations to select excellent lines from it, and it is not easy to aggregate multiple excellent traits together.

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  • Method for breeding sorghum restorer Ji R5062 through sister hybridization

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Embodiment Construction

[0016] The present invention is realized in the following manner:

[0017] Step 1: In the summer of 2001, an excellent long-spike sorghum restorer line Ji R105 was selected as the female parent, and a sorghum restorer line Nan 133 with excellent comprehensive traits was selected as the male parent. Artificial emasculation was carried out in Gongzhuling, Jilin, and harvested Hybrid first generation seed F 1 .

[0018] The second step: In the winter of 2001, the additional generation was carried out in Hainan, and the hybrid F obtained in the first step was planted. 1 Substitute seeds, mix them and get F 2 seed.

[0019] The third step: F obtained from the second step of planting in Gongzhuling in the summer of 2002 2 The generation population is 300 plants. According to the target traits when harvesting, select a single plant seed F with longer ears, raised leaves, shorter plants, and better plant shape. 3 , Single harvesting and single removal when harvesting.

[0020] S...

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Abstract

The invention relates to a method for breeding sorghum restorer Ji R5062 through sister hybridization. The method comprises the following steps of: 1, determining a breeding target, and selecting a sorghum restorer type parent; 2, performing artificial emasculation hybridization to obtain the first generation of hybrid; 3, planting the first generation of hybrid, and mixing and harvesting; 4, planting F2, and selecting the single plant with excellent characters from the segregation population; 5, selecting sister lines with complementary characters and performing artificial emasculation hybridization; 6, planting the first generation of sister hybridization, and mixing and harvesting; 7, planting F2, and selecting the single plant with excellent target characters; and 8, performing selfing and test cross.

Description

technical field [0001] The invention belongs to the field of plant breeding, and in particular relates to a method for breeding sorghum restorer lines by using sister crosses. Background technique [0002] In the 1990s, we clarified the genetic characteristics of sorghum ear length and the genetic effects of ear structure traits through experiments, analyzed the ear length and ear structure of Chinese sorghum, and believed that the restorer lines used in the production of sorghum spring sowing in early maturing areas in my country had shorter ear lengths. , the panicle length of the hybrids produced by the combination is also shorter, which limits the increase of sorghum yield. Therefore, the selection of restorer lines with long panicle type and high yield, and the innovation of germplasm are a key factor for the breakthrough of sorghum breeding. [0003] The variation of sorghum hybridization is very rich. Using the traditional method of artificial emasculation hybridizati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02
Inventor 李继洪陈冰嬬高士杰李淑杰王阳李伟胡喜连高鸣
Owner JILIN ACAD OF AGRI SCI
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