Breeding method of upland cotton hybrid

A hybrid and upland cotton technology, which is applied in botany equipment and methods, plant genetic improvement, angiosperms/flowering plants, etc., can solve the problems of increasing the frequency of good gene recombination, negative correlation between disease resistance and high yield, poor disease resistance, etc. Problems, to achieve the effect of significant increase in production, small output, and strong high temperature resistance

Inactive Publication Date: 2009-04-08
NANJING AGRICULTURAL UNIVERSITY
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Problems solved by technology

[0007] Aiming at the problems of poor disease resistance and negative correlation between disease resistance and high yield in the production of cotton varieties in the prior art, the present invention provides a method of crossing multi-parent hybrids, intercrossing pollen of excellent single plants of hybrid offspring, and increasing the r

Method used

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Embodiment Construction

[0021] A breeding method for upland cotton hybrids, comprising:

[0022] 1. The female parent 29-8 (Sumian No. 12 × Sumian No. 9) F 5 as the female parent, F 5 The traits are that the group traits are neat and consistent, without separation, the height of the plant is more than 105 cm, more than 27 bolls per plant, the weight of a single boll is more than 6 grams, the clothing percentage is 44%, the seed index is 9 grams, the wilt index is 8.2, and Verticillium wilt Refers to 31.3. Take the same amount of pollen from the female parent of Lumianyan No. 15, Chunaizao, Ganmian No. 11, Simian No. 4, and Shiyuan 321, and mix the mixed pollen with the female parent to harvest F 1 , F 1 Mixed, F 2 Plants with poor growth potential (obviously short individuals) are eliminated in the group, and the rest of the plants are emasculated. The above-mentioned equal amount of pollen is mixed and then pollinated, and hybrid bolls are harvested. Plant F 3 groups, in F 3 Group selection o...

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Abstract

The invention relates to a method for breeding an upland cotton intervarietal hybrid, and belongs to the technical field of plant breeding. Multi-parents are crossbred through mixed pollination, and filial generation excellent plants are crossbred through mixed pollination to breed female parent line 29-8. The male parent 203-16 line is selected and bred through multi-parent hybrid, excellent plant mixed pollination hybrid, and combination of techniques such as identification of verticillium wilt disease and verticillium wilt hybrid disease nursery, space-flight induction and so on. The female parent line 29-8 and the male parent 203-16 line are prepared into a hybrid Ning 2058. The hybrid Ning 2058 belongs to middle-early ripen variety, the growth season is about 120 days, the plant height is 98.60 cm, the node position number of fruit branch is 6.38, the fruit branch number of single plant is 11.96, the boll number of the single plant is 22.66, the boll number per mu is 65,900, the single boll weight is 6.95g, the seed index is 10.88g, the gin turnout is 41.17 percent, the pre-frost lint percentage is 89.23 percent, and the hybrid is suitable to be planted in various cotton areas in Tianjin City.

Description

1. Technical field [0001] The invention relates to a breeding method for upland cotton hybrids, which belongs to the technical field of plant breeding and is specially used for breeding upland cotton hybrids with early maturity, high yield, disease resistance and pollen high temperature resistance. 2. Background technology [0002] Verticillium wilt is an important disease that affects cotton production in my country. In recent years, the incidence area has been relatively large, seriously affecting cotton production in this area. Verticillium wilt resistance of cotton varieties lacks the source of resistance, and the pathogenicity of pathogenic bacteria differentiates quickly, and the resistance of the source of resistance tends to degrade after use. Resistance is negatively correlated with yield, and the agronomic traits of resistant sources are often poor. It is difficult to breed cotton varieties with excellent traits such as Verticillium wilt resistance, Fusarium wilt ...

Claims

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Application Information

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IPC IPC(8): A01H1/02A01H1/04A01H5/00
Inventor 唐灿明曾斌
Owner NANJING AGRICULTURAL UNIVERSITY
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