Seed property maintenance and original seed production method of an early-maturing cotton variety

Abstract

The invention discloses a property keeping and stock seed production method of early maturing cotton variety. According to the property keeping and stock seed production method of early maturing cotton variety provided by the invention, foundation seed production of the early maturing cotton variety is realized by adopting a 'mixed selection and mixed breeding' method, and the method comprises thefollowing steps: early sowing and thin planting in suitable phase; roguing and removing diseased or infected plant elimination in the initial blooming period; plant selection in the boll opening period; measurement of fiber length, and grouping and harvesting cotton; final selection of typical single plant groups; obtaining seed mixture of the selected typical single plant groups, which is the stock seed. According to the method for producing early maturing cotton variety stock seed, links of single plant selection, and plant row and plant strain identification are eliminated, while in the intermediate link of production of improved variety with stock seed, the stock seed production period is shortened by large-area and multi-single-plant screening of a seed production field and exchangeof time with space. The purity of the stock seed of the early maturing cotton variety produced by adopting the method disclosed by the invention reaches 99.9%, the plant type, leaf type and boll typeof the early maturing cotton variety are kept, and the characteristics of early maturing, strong boll forming and disease resistance of the variety are kept.

Description

technical field [0001] The invention belongs to the field of agriculture, and relates to a seed property maintenance and original seed production method of early-maturing cotton varieties. Background technique [0002] Inheritance and variation are the basic attributes of organisms. Upland cotton (Gossypium hirsutum L.) is an allotetraploid cultivar, and it is a very cross-pollinated crop. It is impossible to make a cotton variety eternal. Seed nature is formed by genetic genes under certain conditions. The breeding and breeding environment conditions of each generation in production cannot be absolutely the same. Temperature, humidity, light, soil and different crop stubble conditions may cause cotton to produce natural variation. The natural variation of cotton develops towards the adaptability of cotton itself to the environment, and people's requirements for cotton yield and quality often conflict with the adaptability of cotton itself to the environment. Therefore, in...

AI Technical Summary

Problems solved by technology

The disadvantage is that the cycle is long, the workload is heavy, and new variations are inevitable in the process, and it is not completely suitable for early-maturing cotton varieties with high seeding densities.

Images