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Bio-chemical labelled auxiliary breeding technology for short-term cotton with early mature and without progeria

A technology for marker-assisted breeding and short-season cotton, which is applied in biochemical equipment and methods, microbial measurement/inspection, plant gene improvement, etc., can solve time-consuming and labor-intensive problems, and achieve high activity and excellent comprehensive fiber quality indicators , the effect of improving the efficiency of photosynthesis

Inactive Publication Date: 2006-11-15
COTTON INST CHINESE AGRI ACAD
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Problems solved by technology

Since environmental effects can easily cover up genetic effects, it is time-consuming and labor-intensive for breeders to select for early maturity and no premature senescence traits

Method used

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Embodiment approach

[0021] Parent selection: collect excellent germplasm at home and abroad, identify and screen available excellent materials. Choose precocious and non-precocious varieties with excellent comprehensive traits as parents, especially early-maturing and non-precocious varieties as female parents. Zhongmiansuo 24 is a high-yield, disease-resistant, and widely adaptable early-maturing and non-premature variety Zhong 343 as the female parent, and the high-strength high-quality material (Zhong 10 × Mei B Zao) n generation is used as the male parent to carry out hybridization. , High-quality traits were transferred into domestic self-fertilizing intermediate materials, recombined, and bred into Zhong 621, a new variety that is early-maturing, not prematurely aging, high-quality, and multi-purpose. Zhongmian Institute 27 uses Zhong0710, a new early-maturing and high-quality line that is related to Mei Bzao, as the female parent, and crosses with Zhong5427, which has fast emergence, vigor...

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Abstract

The invention provides a biochemical marker-assisted selection method for the trait of premature senescence and non-premature senescence of short-season cotton. The biochemical markers involved in the invention are superoxide dismutase (SOD), peroxidase (POD), catalase (CAT) and malondialdehyde (MDA) content, and the selection method is to select precocious and non-premature aging parents Hybridization, using the relative activity of the three enzymes SOD, POD, and CAT in the critical period as selection markers, the population of hybrid offspring was selected from the F2 generation, and combined with conventional breeding techniques, a precocious, non-premature senescence, green branches and green leaves were bred. The short-season cotton series of white catkins are Zhongmian 16, 24, 27 and 36. This technology overcomes the disadvantages of conventional breeding, such as long selection period, great influence by environmental conditions, time-consuming and laborious, and low selection efficiency. Effectively alleviate the genetic positive correlation between precocity and premature aging, and the negative genetic correlation between early maturity and high quality and disease resistance, integrating precocious maturity without premature aging, high quality, high yield and disease resistance.

Description

1. Technical field [0001] The invention relates to a crop breeding method in the field of agricultural science and technology, which is used for selecting new short-season cotton varieties with early maturation and no premature senescence, green branches and green leaves and white flocs in the hybrid offspring population. 2. Background technology [0002] The successful breeding of short-season cotton varieties has opened up broad prospects for solving the long-standing contradictions between grain and cotton competition for land and season in my country's cotton regions, and improving the economic and ecological benefits of cotton fields. Low temperature and pest damage, labor saving, investment saving, significant economic benefits, welcomed by cotton farmers. [0003] The main problem in the short-season cotton breeding process is to coordinate the relationship between prematurity and premature senescence. Precocious maturity is the key to achieving dual cropping of wheat ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12Q1/00A01H1/04A01H1/02
Inventor 喻树迅宋美珍范术丽原日红黄祯茂
Owner COTTON INST CHINESE AGRI ACAD
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