Application and cultivation method of high-frequency recessive female sterile rice restorer lines

Abstract

The invention discloses application of high-frequency recessive female sterile rice restorer lines in mixed-sowing or mixed-harvesting type rice seed production. A specific method of the application comprises the steps of taking a high-frequency recessive female sterile rice restorer line as a male parent, taking a hybrid rice male sterile line as a female parent, performing mixed sowing on male / female-parent seeds and performing mixed harvesting on the male / female-parent seeds subjected to hybridization and completing the process of seed production, or the steps of taking the hybrid rice male sterile line with screenable genetic specific characters as the female parent, performing mixed sowing and mixed harvesting and then adopting different separation methods to perform further impurity removal on the seeds subjected to mixed harvesting. The invention also provides a cultivation method which hybridizes a female sterile restorer line FSV1 with a conventional hybrid rice restorer line R, chooses and gets the high-frequency recessive female sterile rice restorer line with stable genetic characters and excellent comprehensive agronomic characters from F1 progenies. The method has the advantages of realizing the full-mechanized operation of producing and processing hybrid rice seeds and greatly improving the efficiency of hybrid rice seed production.

Description

technical field [0001] The invention relates to the application and cultivation method of hybrid rice, in particular to the application and cultivation method of hybrid rice restorer line. Background technique [0002] Hybrid rice is a banner of my country's agricultural science and technology. Hybrid rice has been widely promoted since 1976. Over the past 30 years, more than 6 billion mu have been planted, and the cumulative rice production has increased by more than 600 billion kilograms. In recent years, the planted area has accounted for about 60% of the total rice area in the country, and the output has accounted for 67% of the total rice output. about. It can be said that the hybrid rice industry is my country's national industry and an international brand, and seed industry technology is the core of hybrid rice technology. Promoting the further development of hybrid rice seed industry technology is a strategic measure to maintain my country's hybrid rice internation...

AI Technical Summary

Problems solved by technology

However, the method proposed in this patent application is mainly limited to three-line hybrid rice, and conventional restorer lines with normal female fertility are used for mixing, and the male parent seed content in the mixed seeds is high; high-purity hybrid seeds are obtained through expensive color sorting equipment There are also some difficulties

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