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Artificial method of maize population for genetic breeding

A technology of genetic breeding and artificial synthesis, applied in the field of agriculture, can solve the problems of few reports on improvement research, low frequency of genetic diversity of germplasm basis, etc., and achieve broad disease resistance (reversal), rich genetic diversity, source broad effect

Active Publication Date: 2022-04-29
贵州省旱粮研究所
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Problems solved by technology

[0007] Most maize breeding in my country has long relied on the two-ring line selection technology, resulting in a low frequency of genetic diversity in the germplasm base. However, there are few reports on the use of two types of germplasm to synthesize new populations and improve them, especially through the design that can make dominant materials and There is no report on the synthesis method of full integration between complementary traits

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  • Artificial method of maize population for genetic breeding

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Embodiment 1

[0031] Embodiment 1 of the present invention (process): the artificial synthesis method of the corn population that is used for genetic breeding

[0032] In the spring of 2015, the basic materials for the construction of populations were collected (11 germplasm materials based on Suwan germplasm and 5 inbred lines representing Lancaster groups), planted in Guiyang, and 55 hybrid combinations were designed according to NCⅡ , each combination is prepared with more than 2 fruit ears, and 44 hybrid seeds are selected according to the quality and quantity of seeds when harvesting, and the seed bag numbers (F1...F44) of 3 / 5-4 / 5 for each hybrid seed, each Seed mixes of hybrid seeds 1 / 5-2 / 5 are numbered M.

[0033] In the winter of 2015, the seeds harvested in the previous season were planted in Sanya, Hainan under natural isolation conditions, and the seeds of F1...F44 were used as female parents and planted in panicle rows, and M was used as male parent; at a density of 4000-4500 pl...

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Abstract

The invention discloses an artificial synthesis method for a corn population used for genetic breeding. The present invention aims at breeding superior materials with high matching, wide adaptability, strong disease resistance (reversal), fast dehydration, and suitable for light and simplified cultivation or mechanized cultivation and harvesting in the future production of Southwest mountainous corn regions. The selection of complementary advantages of materials and the coercive coercion of high-intensity, multi-regional and complex ecological environment pressures form groups. The focus of the inventor's improvement and amplification is mainly on the tropical Suwan germplasm, which solves the shortcomings of slow dehydration, low seed yield and poor agronomic traits of the tropical Suwan germplasm, in order to breed hybrids suitable for future actual production needs. species; it has a strong practical and exploratory role in maize breeding and genetic research in southwest mountainous areas.

Description

technical field [0001] The invention relates to the field of agricultural technology, in particular to an artificial synthesis method for genetic breeding of corn populations. Background technique [0002] Corn is the crop with the largest planting area, the most uses, and the highest total yield in my country and the world. It is also an important food and feed crop in some mountainous areas. The development of corn production plays a vital role in ensuring food security and promoting the development of animal husbandry. [0003] The southwestern maize ecological region is one of the main maize producing areas in my country. However, due to the complex ecological environment, poor soil and normalization of extreme climate changes in this area in recent years, the production requirements for varieties are diverse. Therefore, it is of great significance to breed inbred lines with drought resistance, barren resistance, disease resistance, wide adaptability, fast dehydration an...

Claims

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Application Information

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Patent Type & Authority Patents(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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