文献类型： 会议论文

第一作者： Mou Tongmin

作者： Mou Tongmin ¹ ; Li Chunhai ¹ ; Young Guocai ¹ ; Lu Xinggui ¹ ;

作者机构： 1.Food Crops Research Institute, Hubei Academy of Agricultural Sciences,Wuhan 430064, China

会议名称： International symposium on hybrid rice

主办单位：

页码： 1-10

摘要： Hubei photoperiod-sensitive genic male sterile (PGMS) rice Nongken 58S, which was used as the donor of genic male sterile genes, was crossed, backcrossed, and multicrossed with various target indica varieties. Sterile plants were selected under different environments.In the past 15 years, eight thermosensitive genic male sterile (TGMS) lines and four PGMS lines were developed. The characteristic response of these lines to photoperiod and temperature was studied under various environments in the field and in phytotrons. The results showed that most of them had a completely stable sterile period of about 45 days at Wuhan. The temperature-sensitive stage ranged from the differentiating stage of the pollen mother cell to the early ripe stage of pollen. The critical temperature points (CTP) of fertility alteration varied in different TGMS lines: 26.5 ℃ (daily mean)for W6154S, W6184S, W6111S, W6417S, and W8103S; 25.5 ℃ for W9046S and W9056S; and 24 ℃ for W91607S. The fertility expression of PGMS lines was controlled simultaneously by hotoperiod and temperature. PGMS line W7415S had a CTP of 26 ℃ and a critical photoperiod point (CPP) of 13.5 h. The CTP and CPP for W9451S and W9461S were 24 ℃ and 14.0 h, and for W9593S they were 24 ℃ and 13.0 h, respectively. A practical and effective procedure for breeding PGMS and TGMS lines has been established.

分类号： Q781`S334