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Sterile line selective-breeding and hybrid breeding method of pest-resistant and low-gossypol natural colored cotton

A hybrid and sterile line technology, applied in the fields of botanical equipment and methods, application, and plant genetic improvement, can solve the problems of non-pollution, poor insect resistance of colored cotton, and achieve stable and consistent fiber color and luster. The effect of large seeds and improving seed production

Active Publication Date: 2014-01-08
济宁大粮农业服务有限公司
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Problems solved by technology

In addition, because the planting technology is immature and the insect resistance of colored cotton is poor, it is inevitable to adopt the same planting methods as ordinary cotton, such as fertilization and spraying, which cannot be completely pollution-free

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment

[0024] Select parent:

[0025] Lumian No. 12: [Peng Dongchang, Yu Jinshan, Wang Guangming, etc. Introduction to low-phenol cotton Lumian No. 12, China Cotton, 1994, 21(1): 21], Lumian No. 12 (original line No. 403), It was bred by Shandong Cotton Research Center in 1992 and was approved by Shandong Province in May 1993. The whole growth period is 135 days, the main body length is 32mm, the fineness is 578om / g, the strength is 3.889, the fracture length is 22.gkm, and the maturity coefficient is 1.63. Plant height is 94cm, boll weight is 5.39 g, lint content is 37.5%, seed finger is 10.9 g. Kernel composition, measured by the Central Laboratory of Shandong Academy of Agricultural Sciences for 2 years, contains 45.01% protein, 31.2% crude fat, and 0.008% free gossypol, which is significantly lower than the international and Chinese health standards.

[0026] Lu Mianyan No. 21: [Li Ruzhong, Wang Zongwen, Wang Jinghui, etc.. High-yield, stable-yield, wide-adaptive and insect-resistan...

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Abstract

The invention relates to a sterile line selective-breeding and hybrid breeding method of pest-resistant and low-gossypol natural colored cotton. The sterile line selective-breeding and hybrid breeding method is characterized in that low-gossypol Shandong cotton-12 as a female parent and pest-resistant Shandong cotton research center (SCRC)-21 as a male parent are subjected to hybridization matching, and in the F2 generation group, plants of which cotyledons, stems and leaves do not contain gossypol are selected and a low-gossypol cotton line 8HN538 is obtained after continuous selfing plantation of the plants for 3-4 generations; a pest-resistant genic male sterile line variety Shandong RH-1 as a female parent and a nut-brown low-gossypol natural colored cotton parent 00S17 as a male parent are subjected to hybridization matching, pest-resistant plants in the F2 generation group are retained, and male fertile low-gossypol cotton plants are selected and are used for pollination on low-gossypol cotton male sterile plants; nut-brown cotton offspring is selected and retained; a continuous selective-hybridization process is carried out until the 4th generation so that a pest-resistant low-gossypol natural colored cotton genic male sterile line 0-173-3A is obtained; and the low-gossypol cotton line 8HN538 having pest resistance as a male parent and the pest-resistant low-gossypol natural colored cotton genic male sterile line 0-173-3A as a female parent are subjected to hybridization matching plantation so that the pest-resistant and low-gossypol natural colored cotton hybrid is obtained. The pest-resistant and low-gossypol natural colored cotton hybrid has a high yield, good fiber quality and a stable and uniform color, does not contain gossypol in cotton seeds, and greatly improves a comprehensive utilization value.

Description

Technical field [0001] The invention relates to the technical field of cotton breeding, in particular to a method for breeding insect-resistant and low-phenol colored cotton sterile lines and hybrid breeding. Background technique [0002] Cotton is an important fiber and oil crop in the world, and cotton fiber is an important raw material for the textile industry. Generally, cotton cultivars have a large number of glands so that in addition to the direct use of cotton fiber, cotton seeds with important nutritional value need to spend a lot of money and manpower to detoxify them before they can be used. Low-phenol cotton is a type of cotton without pigment glands. The content of gossypol in its kernels is lower than the standard (0.004%) and national standard (0.002%) stipulated by the World Health Organization (WHO) and the United Nations Food and Agriculture Organization (AFO) ), low-phenol cotton varieties contain very low content of gossypol, the oil squeezed from cotton seed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/04A01H1/02
Inventor 赵永民纪家华王义平
Owner 济宁大粮农业服务有限公司
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