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Breeding method of corn selfing line 99-751

An inbred line and maize technology, which is applied to the breeding field of maize inbred line 99-751, can solve the problems of general quality of bred varieties, severe occurrence of large leaf spot disease and dwarf mosaic disease, etc., and achieves good disease resistance. , the effect of high coordination

Inactive Publication Date: 2017-11-17
山西省农业科学院谷子研究所
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Problems solved by technology

[0003] Existing maize varieties suffer from heavy spot disease and dwarf mosaic disease during the corn production process, and the quality of the bred varieties is average

Method used

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  • Breeding method of corn selfing line 99-751
  • Breeding method of corn selfing line 99-751
  • Breeding method of corn selfing line 99-751

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Embodiment

[0017] The first stage: 1572 material creation

[0018] In 1990, four inbred lines, Dan 340, Dan 341, E28, and Lv 9 Kuan, were used as basic materials. After the flowering period was mixed with the same amount of pollen, they were pollinated to form a B population to expand and accumulate multiple excellent inbred lines. Favorable genes of the line can be fully recombined and complemented. In 1991, the polygenic dwarf line 5003 was used as the female parent, and the mixed pollen of the B population was used as the male parent. After crossing, the dwarf B population was formed to increase the gene frequency of the dwarf trait. In the winter of 1991, 120 panicles were selected and selfed with the dwarf B population as the basic material in Hainan to achieve gene exchange and recombination. From 1992 to 1994, continuous self-selection was carried out. In each generation, dwarf plants with strong disease resistance and good comprehensive traits were selected for homozygous self-c...

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Abstract

The invention discloses a breeding method of a corn selfing line 99-751. The method comprises the following steps: taking a lucia red cob good selfing line with high combining ability and northern leaf blight resistance as a polygenic resistance resource, taking polygenic short-culm series 5003 as a short-culm resource, taking the derived line shen 137 of PN78599 germplasm as a dwarf mosaic virus resistance resource to recombine the favorable gene through breeding techniques and thus obtaining the short-culm large-corncob excellent selfing line with high combining ability and good disease resistance.

Description

technical field [0001] The invention relates to the field of corn breeding, in particular to a breeding method for a corn inbred line 99-751. Background technique [0002] Corn is a major crop worldwide. In my country, corn, as the largest food crop, has an important strategic position in food security, animal husbandry development and food processing industry. The key technologies for improving corn yields are the popularization and application of fine new varieties and scientific production methods adapted to local conditions. In general, the breeding and popularization of new fine varieties of maize contributed about 40% to the growth of maize yield. Excellent new varieties have the characteristics of high yield, high quality and wide adaptability. Breeding new corn varieties with high yield, high quality, multi-resistance and wide suitability is a long-term goal in the field of breeding. Promote continuous innovation to strengthen the food security situation and meet ...

Claims

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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 张文忠芦明王慧慧连培红赵晋峰栗红生申海斌宋殿珍刘景秀刘满芳
Owner 山西省农业科学院谷子研究所
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