A kind of seed production method of three-line hybrid cotton with purple-red mark

Abstract

The invention discloses a seed production method of three-line hybrid cotton marked with purple red. In the present invention, the purple-red marker trait is transferred to the cytoplasmic male insect-resistant sterile line of upland cotton, and the insect-resistant three-line hybrid with the purple-red marker trait is produced by crossing the restorer line with it, which can be obtained at the cotyledon stage Early identification of purity, compared with the traditional identification of comprehensive traits during the growth period of cotton, greatly shortens the identification period, better solves the problem of purity identification of three-line hybrids in production, and makes the three-line hybrids better in production. Play a role.

Description

technical field [0001] The invention relates to the field of crop breeding, in particular to a seed production method of three-line hybrid cotton marked with purple red. Background technique [0002] There are more than 30 kinds of crops using heterosis in the world, such as maize and three-line hybrid rice have made great achievements in its application. Human beings have studied cotton heterosis for more than 100 years. According to the "American Cotton Production Research Association Papers" report, the heterosis (HP) range of lint yield is 4-33%, with an average of 15-27%; was 6.6%. Cotton heterosis research has always been highly valued by major cotton-producing countries. my country has carried out hybrid cotton research since the 1960s, and bred a large number of hybrid cotton varieties for large-scale promotion and application in production, such as Zhong 29, Lumian 15 , Hanza 98-1, Hanza 301, etc. [0003] At present, the production of cotton hybrids mainly adopt...

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Problems solved by technology

[0005] At present, the leaves of the parents of the three-line hybrids and the three-line hybrids are all conventional types of green leaves. The purity of the hybrids does not have any appearance markers, which can be visually distinguished by naked eyes. Due to the profit-driven cotton hybrid seeds in the market, adulteration is false and substandard. The frequent occurrence of overfilling makes the rights and interests of breeders unable to be guaranteed, and at the same time brings irreparable losses to seed management enterprises and cotton farmers

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