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《Journal Huazhong (Central China) Agricultural University》 1996-02
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PRELIMINARY STUDIES ON USING PHOTOPERIOD SENSITIVE GENIC MALE STERILITY FOR RECURRENT SELECTION OF RICE

Lei Jianxun Li Zebing Wan Jingmeng Yang Shuhua Jin Deming (Huazhong Agricultural University, Wuhan 430070)  
4 japonica photoperiod sensitive genic male sterile (PGMS) lines crossed with 12 japonica and javanica varieties in 1988. F_2 of 4×12 partial diallel crossed were used to synthesize the initial intemating population of S_(89) (C_0). S_(89) (C_0), S_(90)(C_1), S_(91) (C_2) and S_(92) (C_3) were studied in Wuhan from 1989 to 1992, and main results were as follows: 1)More than 88% the plants of the intermating populations flowered in the period of mid July to the end of August in which the japonica PGMS rice would show complete male sterility. 2)The fertility segeration of male strile, partially fertile and fertile plants was observed in all the intermating populations. The percentage of male steriles in S_(80) ,S_(90),S_(91) and S_(92) were 6.9%, 36.8%, 29.8% and 44.7%, respectively. The average crossnig seed setting rate of the male steriles of the intermating populations ranged from 5.9% to 17.2%. 3) The theoretical yield of S_(90) was 0.8% higher than that of S_(89). This indicated that the selection for yield was effectives. The results proved the feasibility of using photoperiod senstive male sterility for recurrent selection of rice.
【Fund】: 国家自然科学基金资助项目
【CateGory Index】: S511
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