Non-transgenic cotton breeding method

Abstract

The invention belongs to the technical field of cotton breeding, and particularly relates to a non-transgenic cotton breeding method. The method comprises steps as follows: taking a local non-transgenic cotton variety which is obtained by screening as a female parent, taking an introduced non-transgenic cotton variety as a male parent, and conducting hybridizing in a non-transgenic cotton breeding test field to obtain an F0-generation hybrid boll; continuously selfing the F0-generation hybrid boll twice in the non-transgenic cotton breeding test field, then selecting an F2-generation single plant, conducting selfing on the F2-generation single plant in the non-transgenic cotton breeding test field to obtain an F3-generation plant row, conducting selfing on the F3-generation plant row in the non-transgenic cotton breeding test field to obtain an F4-generation plant line, and identifying and screening the F4-generation plant line to obtain a non-transgenic cotton plant line. According to the breeding method disclosed by the invention, the non-transgenic cotton breeding test field is independently established, and an isolation belt of 100-200m is arranged between the non-transgenic cotton breeding test field and a transgenic cotton breeding test field, so that the planting purity of the non-transgenic cotton is ensured in space.

Description

technical field [0001] The invention belongs to the technical field of cotton breeding, and in particular relates to a non-transgenic cotton breeding method. Background technique [0002] Cotton is the main economic crop in our country. my country's cotton yield per unit area and total output both rank first in the world. In recent years, my country's cotton area has exceeded 50 million mu. Xinjiang is rich in light, hot water and soil resources, and has a vast area suitable for cotton. In recent years, the cotton planting area in Xinjiang has exceeded 30 million mu, and its per unit yield and total output rank first among cotton-growing provinces (autonomous regions) in the country. Xinjiang is also the main high-quality cotton production area with the most development potential in my country. Among them, the early-maturing cotton-planting area in northern Xinjiang has about 8 million mu of cotton fields. It is one of the important cotton-growing areas in Xinjiang and is ...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that most of the current cotton varieties are transgenic insect-resistant cotton varieties, and it is difficult to obtain new non-transgenic cotton varieties, and to cultivate non-transgenic cotton varieties suitable for planting in northern Xinjiang, the invention provides a non-transgenic cotton breeding method

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