Abstract:Using ten photoperiod-temperature sensitive male sterile lines; Nongken 58S, 7001S,Shuang 8-2S,W7415S,W6154S,W6184S,KS-9,Min 54-8S,Pei-ai 64S and N98-6S,The correlations between photoperiodic,thermoperiodic response and photoperiod-temperature sensitive male sterility was studied. The results can be