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Method for breeding barren-resisting selfing line by utilizing corn group Suwan1

An inbred line and colony technology, applied in the agricultural field, can solve the problems of being difficult to stand the test and the corn germplasm base is narrow, and achieve the effect of improving drought resistance and barren resistance and broadening the germplasm base.

Active Publication Date: 2018-11-27
贵州省旱粮研究所
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Problems solved by technology

[0006] my country's maize germplasm base is narrow, and most breeders have long relied on the four major germplasm resources (Tang Sipingtou, Lvda Honggu, Reid, Lancaster), which makes it difficult for the bred varieties to stand the test in the production of karst barren mountainous areas. However, there is no report on the use of Suwan1C11 populations to set up different grades of dry land for breeding research

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  • Method for breeding barren-resisting selfing line by utilizing corn group Suwan1
  • Method for breeding barren-resisting selfing line by utilizing corn group Suwan1
  • Method for breeding barren-resisting selfing line by utilizing corn group Suwan1

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Embodiment Construction

[0026] The implementation steps of the present invention: the method of using the corn population Suwan1 to breed barren-resistant inbred lines. In 1992, the corn population Suwan1C11 was used to plant in the barren land of Guangxi and Guizhou, and domesticated once respectively to obtain S 1 and S 2 Generation seeds; then set up different grades of dryland planting and breeding, and use the improved pedigree selection method to select, that is, S 1 and S 2 Generation mixed pollination, mixed selection, mixed planting, in S 3 Single plant selfing, panicle planting and selection from generation to generation, bred stable inbred lines; after identification of different fertility soils, bred inbred lines for use in karst barren mountainous areas;

[0027] The setting of different levels of dry land planting and breeding specifically refers to,

[0028] 1) S 3 to S 8 Generation selection: will S 2 The generation seeds were planted in Guizhou 5-7 and other dry lands (referrin...

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Abstract

The invention discloses a method for breeding a barren-resisting selfing line by utilizing a corn group Suwan1. The invention utilizes a Suwan1C11 group to breed a barren-resisting corn selfing line,by taking comprehensive measures of improved genealogical selecting method, shuttling domestication and forced selection on different-level dry lands, so that the drought-resisting and barren-resisting property of Suwan germplasm is promoted; especially, compared with the barren resistance of a breeding selfing line of the prior art, the barren resistance according to the improved genealogical selecting method-dominant scheme adopted by the inventor can be 40% or above; the corn germplasm basis in China is widened; the core technical problems of narrow corn germplasm hereditary basis and a lack of corn germplasm adapting to the karst barren mountainous area at present are solved; a basis is established for breeding the corn hybrids adapting to the karst barren mountainous area in China andeven in Southeast Asia and African countries.

Description

technical field [0001] The invention relates to the field of agricultural technology, in particular to a method for breeding barren-tolerant inbred lines using the corn population Suwan1. Background technique [0002] Corn is the world's largest food crop and has been called the king of feed. The development of corn production plays a vital role in ensuring food security and promoting the development of animal husbandry. [0003] my country's karst barren mountainous areas center on Guizhou Province, covering 193 counties (districts) in Yunnan, Sichuan, Chongqing, Hubei, and Hunan, including three national-level contiguous destitute areas in Wuling Mountains, Wumeng Mountains, and Yunnan, Guangxi, and Guizhou Rocky Desertification Areas The food and clothing of the poor is the most prominent social problem in this region. Corn is the ration crop with the largest planting area in this region. The perennial corn planting area is about 35 million mu, and the per unit yield is l...

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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 王安贵陈泽辉祝云芳郭向阳吴迅刘鹏飞
Owner 贵州省旱粮研究所
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