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Construction method for synthesis of warm corn artificial population Suwan-Lancaster

A construction method and population technology, which is applied to the construction field of Suwan-Lancaster synthesis of corn warm artificial population, can solve the problems of consuming financial resources, material resources and energy, slow effect, and lack of good combination, etc. big gain effect

Inactive Publication Date: 2017-05-17
贵州省旱粮研究所
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Problems solved by technology

[0008] The Suwan-Lancaster population artificially synthesized by warming corn belongs to the category of germplasm improvement. The germplasm improvement cycle is long, the effect is slow, and it consumes a lot of financial, material and energy resources.
In the synthetic warm Suwan-Lancaster population, it was found that after the hybridization of tropical maize Suwan germplasm and temperate maize Lancaster germplasm, the population after selection was biased towards tropical Suwan germplasm; the advantages of the two were not well combined

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  • Construction method for synthesis of warm corn artificial population Suwan-Lancaster
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  • Construction method for synthesis of warm corn artificial population Suwan-Lancaster

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[0034] The implementation of the present invention will be described in detail below with examples, so as to fully understand and implement the implementation process of how the present invention uses technical means to solve technical problems and achieve technical effects.

[0035] The invention provides a method for constructing a synthetic corn warm artificial population Suwan-Lancaster, comprising the following steps:

[0036] 1) Preparation of Sulan C0:

[0037] 1.1) The lines (inbred lines) selected from the maize Suwan population and Lancaster were used to form 14 hybrid combinations (see Table 1 for details).

[0038] Table 1 Pedigree of Maize Suwan and Lancaster Lines (Inbred Lines)

[0039]

[0040]The 14 hybrid combinations are as follows: Mo17×S611, Mo17×QB48, Mo17×QB39, Mo17×S37, Mo17×QB137, Mo17×39141-1-2, Mo17×39141, Mo17×QB44, Mo17×T32, 39141-1 -2×QB137, QB137×QB39, QB44×39141, 39141-1-2×QB44, Mo17×4018, 4018×QB137 and QB44×39141.

[0041] 1.2) Under nat...

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Abstract

The invention discloses a construction method for synthesis of warm corn artificial population Suwan-Lancaster. The construction method comprises the following steps: selecting strains respectively from Suwan and Lancaster class groups, carrying out artificial purposeful hybridization for synthesizing the warm corn Suwan-Lancaster population, carrying out open pollination under natural isolation conditions, and continuously carrying out genetic equilibrium for four times to form Suwan-Lancaster original population C0, named Sulan C0. The warm corn artificially synthesized Suwan-Lancaster population has high yield genetic gain and great population structural variation; a half sib recurrent selection method is adopted for improving the Suwan-Lancaster population for three times; and meanwhile, line selection is directly carried out on the improved population, a batch of good inbred lines are bred, and the population has the effect of promoting widening of the existing corn germplasm foundation of China.

Description

technical field [0001] The invention belongs to the technical field of crop breeding, and in particular relates to a method for constructing a Suwan-Lancaster synthesis of warm artificial populations of corn. Background technique [0002] Corn is an important food crop in the world, and its total output is second only to wheat, ranking second. Corn has risen to become the largest food crop in my country and has an important strategic position in food security. [0003] The southwest mountainous corn belt is the third largest corn belt in my country after the northeast and north China. It is one of the main corn production areas. According to the production conditions and characteristics of corn in the southwest mountainous areas of my country, we have selected drought-resistant, barren-resistant, disease-resistant and adaptable corn belts. High-yielding, stable-yielding and high-quality corn hybrids grown in mountainous areas are of great significance. [0004] The narrownes...

Claims

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Application Information

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IPC IPC(8): A01H1/02A01H1/04
CPCA01H1/02A01H1/04
Inventor 郭向阳陈泽辉祝云芳王安贵刘鹏飞
Owner 贵州省旱粮研究所
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