关键词: 杂交稻, 丰田1A, 弱感光型, 丰田优1999, 优质

Abstract:

In response to the problem of high yield but poor quality and weak resistance of hybrid rice in the South China, a cytoplasmic male sterile line Fengtian 1A with slender grain shape, fine quality and good taste was bred by creating fine quality parents with high combining ability. By the end of 2021, 14 weak-photosensitive high-quality hybrid rice combinations have been bred using Fengtian 1A, 13 combinations of which have meet the ministerial high-quality standard of grade 3 or above, and 1 combination has been recognized as green super rice, achieving a coordinated improvement in high yield, high quality, and resistance of hybrid rice. Fengtianyou 1999 is a new hybrid rice combination with high-quality and weak-photosensitivity derived from the male sterile line Fengtian 1A and the restorer line R1999. It was registered and released to commercial production by the Guangxi Crop Variety Appraisal Committee in 2019 and passed the introduction record of Guangdong Province in the same year. It has become the main combination of weak-photosensitive hybrid rice.

Key words: hybrid rice, Fengtian1A, weak-photosensitivity, Fengtianyou 1999, fine quality