Method for breeding upland long-stapled cotton

Abstract

The invention provides a method for breeding upland long-stapled cotton, which specifically comprises the following steps: carrying out the artificial cross between Xiang9520 selected as a female parent and Beiersinuo selected as a male parent according to the scientific breeding procedure; carrying out the modified backcross between the F1 generation as a male parent and Xiang9520; carrying out the multi-generation self-cross until the characters are stable; further selecting the high-grade individual-plant material from the field and carrying out the comparative test of strains to select a high-grade and high-yield strain Xiang309 with stable characters; sending the Xiang309 to space by a space ship, and further carrying out the systematic breeding process in the disease nursery after the Xiang309 is returned to the ground; and sampling and checking to obtain a over-length fiber variant individual plant, i.e., the upland long-stapled cotton named as Xiang9136. The invention has the following advantages: the technical route is advanced; the length of the bred upland long-stapled cotton reaches the length limit; and attaching importance to the high-yield selection, the single-boll weight of the Xiang9136 is 5.1g, the lint percentage thereof reaches 43.1%, the yield of unginned cotton per mu reaches 240kg, and the yield of ginned cotton per mu reaches more than 103.5kg.

Description

technical field [0001] The invention relates to a method for breeding cotton, in particular to a method for breeding upland long-staple cotton. Background technique [0002] my country is the largest cotton-producing country in the world, and the textile industry is an important foreign exchange earning industry in my country. However, with the reform of the cotton circulation system and my country's entry into WTO, the problem of single quality and type of cotton fiber in my country has become more and more prominent. The length of raw cotton in my country is basically concentrated in the range of 27-30mm, the cotton yarn is basically concentrated in the range of 20-42 counts, raw cotton with a length of 33mm or more, and high-grade yarns of more than 80 counts are rarely (1%). However, with the development of society and the improvement of people's living standards, there is an increasing demand for high-end clothing. The shirts of various brands listed in my country in r...

AI Technical Summary

Problems solved by technology

[0004] Xiangzamian No. 10 variety, which was bred using land long-staple cotton Xiang 309 as the parent, still has some shortcomings: first, the boll opening of high-quality cotton is still not ideal; second, the high-yield performance needs to be improved