关键词: 杂交水稻, 龙两优750, 选育

Abstract:

Longliangyou 750 is a new temperature sensitive two-line hybrid rice combination, derived from Long S, a new two-line male sterile line which was bred by Hunan Agricultural University, and Zhongzhonghui 750, which was bred by Sanya Branch of China National Seed Group Co. Ltd. It had fine quality, reached the three level of national standards of indica rice. Besides, it showed higher yield and stronger disease resistance than Teyou 009（Ck） in the regional trails of Hainan Province. It was registered and released for commercial production by Hainan Crop Variety Appraisal Committee in April, 2016. Its breeding procedure, major characteristics, cultivation and seed production techniques were introduced in this paper.

Key words: hybrid rice, Longliangyou 750, breeding