Method for breeding and seed production of superior multi-resistance high-yield two-line hybrid rice

Abstract

The invention discloses a method for breeding and seed production of superior multi-resistance high-yield two-line hybrid rice. According to the method, superior rice-blast-resistant high combining ability photo-thermo sensitive genic male sterile line-guangzhan 63S-4 is taken as a female parent to hybridize with a superior bacterial blight-resistant strong and excellent restorer line-zhenhui 832, thus obtaining the two-line hybrid rice-liangyou 832 with high quality, high rice blast and bacterial blight resistance and high yield. The rice cultivated by the method has the advantages of good comprehensive yielding ability, moderate maturation period, high quality, good commodification and strong stress resistance.

Description

technical field [0001] The invention relates to a plant seed breeding and seed production method, more specifically to a high-quality, multi-resistant, high-yield two-line hybrid rice Liangyou 832 breeding and seed production method. Background technique [0002] Rice is the largest crop in my country. Hybrid indica rice has high yield, wide adaptability, and is easy to cultivate. The planting area accounts for 50% of the total rice area in the country, and the output accounts for 60% of the total rice output. It has made a great contribution to my country's food production. The improvement of hybrid rice varieties has always been the key field of agricultural research in my country. High quality, multiple resistance and high yield are the long-term goals of hybrid rice breeding in my country. [0003] With the increase of population and the decrease of land, the food problem is still a social problem that cannot be ignored. In the past ten years, my country's hybrid rice br...

AI Technical Summary

Problems solved by technology

[0003] With the increase of population and the decrease of land, the food problem is still a social problem that cannot be ignored. In the past ten years, my country's hybrid rice breeding has progressed rapidly, and a large number of new three-line hybrid rice varieties have been bred and applied in production. However, these three-line The rice quality of the hybrid rice combination has not been greatly improved, it is not resistant to bacterial blight and rice blast, and its yield potential has not made breakthrough progress.

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