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Hybrid seed producing method for cotton sterile line

A cotton and hybrid seed production technology, applied in the direction of botany equipment and methods, application, plant gene improvement, etc., can solve the problems of time-consuming and labor-intensive, high work intensity, and many false hybrids, so as to achieve obvious heterosis and reduce labor intensity , good effect of insect resistance

Inactive Publication Date: 2005-05-18
INST OF COTTON RES CHINESE ACAD OF AGRI SCI
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Problems solved by technology

[0011] The purpose of the present invention is to breed a transgenic insect-resistant double-recessive male sterile line with recessive low-phenol marker traits for insect-assisted pollination and seed production, so as to solve the time-consuming and labor-intensive work of the current cotton hybrid seed production technology. And lead to a series of problems such as many false hybrids

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  • Hybrid seed producing method for cotton sterile line

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Embodiment Construction

[0036] 1. Breeding process:

[0037] ms 5 ms6 The sterile gene was transferred to varieties with high yield, high quality, and good comprehensive agronomic traits, and a heterogeneous heterogeneous heterogeneous double cryptographic male sterile line with excellent agronomic traits was bred with a sterile rate of 50%, and then used as the female parent, The transgenic insect-resistant cotton line was used as the male parent to cross, and the offspring were backcrossed and tested, and finally the existing transgenic insect-resistant sterile line with good insect resistance, stable sterility, and thorough resistance to A was bred.

[0038] Using non-R228 in the recessive low-phenol insect-resistant cotton line as the male parent to cross with medium-resistant A, F 1 Get Hainan Island Jiadai, from F 2 Select fertile plants with low phenolic content (i.e. no pigmented glands by visual inspection) as male parents in the generation, and make a plant-to-plant hybridization with the...

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Abstract

The hybrid seed producing method for cotton sterile line features the auxiliary insect pollination. The basic materials including Wu R228 in recessive low gossypol zoophobous cotton variety as male parent and Kang-A in transgenic double-recessive zoophobous sterile line as female parent to breed transgenic double-recessive zoophobous sterile line with low gossypol mark characteristic; and auxiliary insect pollination is adopted. The present invention has simplified breeding process and easy distinction of pseudo hybrid seed, and may be used in large scale production of hybrid seed.

Description

(1) Technical field [0001] The invention relates to a seed production method of a cotton sterile line, in particular to a seed production method of a cotton insect-resistant double-recessive sterile line with a low-phenol marker trait, and belongs to the technical field of crop breeding. (2) Background technology [0002] Cotton is the most important economic crop in the world. Like corn, rice and other crops, cotton also has obvious heterosis. Cotton hybrids have become more and more important in cotton production in recent years, and have become one of the main ways to increase cotton yield and improve cotton fiber quality. At present, the production method of cotton hybrid seeds is mainly artificial emasculation and hybridization seed production method, and more than 90% of hybrid seeds planted in cotton production are produced by this method. Practice has proved that this method has the disadvantages of time-consuming and labor-intensive, high work intensity, complex se...

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Application Information

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IPC IPC(8): A01H1/02
Inventor 邢朝柱郭立平苗成朵王海林王海芹
Owner INST OF COTTON RES CHINESE ACAD OF AGRI SCI