Gossypium bickii grafting and breeding method

Abstract

The invention belongs to the technical field of cotton cultivation, and particularly relates to a gossypium bickii grafting and breeding method which includes the steps: stock pretreatment; scion pretreatment; grafting and management and the like. In a common cotton breeding process, seeds are mainly bred, grafting is occasionally implemented, and cotton seedlings with 2-3 leaves at a main leaf stage serve as stocks to be grafted. According to the method, older cotton plants more than 2 months serve as stocks to improve gossypium bickii growth characteristics. Initial experiment results show that stocks and related management measures are improved, gossypium bickii growth and development cycles are greatly shortened, flowering time can be shortened by a half after grafting, time from flowing to seed maturation can be shortened by one-two weeks, and growth and development indexes such as biomass, main stem length, number of branches, leaf size and number of cotton bolls are obviously improved, so that the method has important technical values and application significance for acceleration of related breeding progresses.

Description

technical field [0001] The application belongs to the technical field of cotton cultivation, and in particular relates to a patent application for a breeding method of Bickerson cotton. Background technique [0002] Bick Cotton ( Gosspium bickii ) is a diploid wild cotton species native to the Australian mainland. It has the characteristics of: the plant has pigment glands containing gossypol, the seeds have no glands, and the epidermis is hairy. The advantages of high yield and strong applicability of oil and protein have been widely valued. The unique trait of glandular seeds without glands in plants provides a new target with development potential for molecular breeding of cotton, which has high research and application value. [0003] However, in actual cultivation and genetic breeding, due to the distant relationship between B. kirschii and the existing cultivated cotton, it is difficult to hybridize, especially its growth characteristics of slow growth and low boll s...

AI Technical Summary

Problems solved by technology

[0003] However, in actual cultivation and genetic breeding, due to the distant relationship between B. kirschii and the existing cultivated cotton, it is difficult to hybridize, especially its growth characteristics of slow growth and low boll setting rate. The transfer of genes into the genome of cultivated cotton has caused serious constraints, so it is extremely necessary to make some improvements in the breeding methods of Bikeratin, so as to lay a certain technical foundation for related breeding work

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