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Breeding method for cotton new variety with seed containing less gossypol and plant containing more gossypol

A new variety and plant technology, applied in the field of breeding of new cotton varieties, to achieve the effect of advanced technical routes

Inactive Publication Date: 2002-11-20
COTTON SCI RES INST OF HUNAN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, until now, no success has been achieved by breeding additive lines or directly introducing the glandular delay gene into upland cotton.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0008] The parents and selection process of Xiang X9628 are shown in the table below

[0009] Year

[0010] The implementation procedure of the present invention is: in 1988, the high-yield and disease-resistant variety Xiangmian No. 10 was used as the female parent and the dominant aglandular material Zhong 5655 was used as the male parent to carry out hybridization. In 1989, Xiangmian No. 10 was used as the female parent, and the hybrid offspring was used as the male parent for backcrossing. In 1990, Xiangmian No. 10 was used as the female parent, and the backcross offspring was used as the male parent for backcrossing. In 1991, Xiangmian No. 10 was used as the female parent, and the backcross offspring of the previous year was used as the male parent. In 1992, the progeny of three backcrosses will be self-crossed, and the self-cross will be carried out in Hainan in the winter of 1992. In 1993, they were self-bred again in Changde. Select a single...

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Abstract

The new cotton variety, Xiang X9628, is bred through the processes of artificial hybridization between Xiangmian NO.10 and Zhong 5655; triple continuous backcrosses with Xiangmian No.10 as female parent and hybridized or backcrossed progeny as male parent; four times of selfings to select individual plant; and final selfing to purify. The new cotton variety has three features of early maturation,disease resistance and high yield. In addition, it has low gossypol content in cotton seed and this makes it possible for people to utilize protein in cotton seed effectively.

Description

technical field [0001] The invention relates to a breeding method of a new cotton variety. Background technique [0002] Cotton is an important fiber crop. In addition to 18% to 20% oil, cottonseed also contains 22% to 24% protein. The protein content of cottonseed flour after oil extraction from cottonseed can be as high as 45% to 50%, which is far better than that of rice, wheat, even peanuts and soybeans. Therefore, cotton is not only an important vegetable oil, but also an important plant protein resource second only to soybean in the world. The important reason that hinders people from making full use of cottonseed protein for a long time is that cottonseed contains 1% to 2% gossypol (Gossypol) and its derivatives. Gossypol is toxic to humans and monogastric animals, and gastric mucosal tissue is easily destroyed after consumption, causing digestive disorders. At present, gl 1 , gl 2 , gl 3 , gl 4 , gl 5 , gl 6 and other 6 gland form...

Claims

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Application Information

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IPC IPC(8): A01H1/02
Inventor 张雪林金林张天真
Owner COTTON SCI RES INST OF HUNAN
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