Production method of grafted seedlings of cotton genital sterile plants

Abstract

The invention relates to a preparation method of a cotton nucleic male sterility plant grafted seedling. The preparation method comprises the following steps: preparing a perennial root cotton nucleic male sterility plant scion (S100), preparing a stock and grafting (S200), field cultivating and managing nucleic male sterility plant grafted cotton (S300), and field hybrid seed production of the nucleic male sterility plant grafted cotton; the step S100 comprises the following steps: choosing a safety isolation area (S101), choosing planting density (S102), cultivation and management (S103), identifying fertility and removing all fertile plants (S104), pollination, hybridization and harvest of seed cotton (S105), and scion preparation; the step S200 comprises seeding (S201) and grafting (S202). The preparation method provided by the invention has the advantages of reasonable process and simplicity in operation; by using the preparation method, the seed preparation process is simplified, the seed genetic purity is high, the stress resistance of the maternal plant is improved, the seed quality is good, and the production is high; meanwhile, the seed preparation cost is relatively low, the income of a seed producing household is increased significantly, and the preparation method is suitable for popularization and application.

Description

technical field [0001] The invention relates to the technical field of crop production, in particular to a method for producing grafted seedlings of cotton genital sterile plants. Background technique [0002] Complicated procedures, heavy labor, high cost, and difficult quality control are notable characteristics of cotton hybrid seed production, and are also the main obstacles restricting the development of hybrid cotton. Seeking technological breakthroughs has always been the direction of cotton scientific research. At present, there are mainly two methods for large-scale production of cotton hybrids: artificial detasseling and nuclear sterile "one-line two-use". [0003] Among them, in the artificial castration method, the combination of artificial castrated hybrids is free, and it is easy to screen out high-dominant hybrids, but artificial castrated hybrids need to be manually peeled and detasselled during the seed production process. At least 45 laborers are required ...

AI Technical Summary

Problems solved by technology

[0009] The present invention aims to solve the existing problems of complex cotton hybrid seed production procedures, labor intensive, high cost, difficult to control quality, and seriously restrict the development of hybrid cotton, and proposes a production procedure simple, good seed quality, high yield and low seed production cost. Production method of grafted seedlings of low cotton genital sterile plants

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