Male sterilizing efficacy of 20 different oxanilate formulations was studied in comparison to sodium methyl arsenate. The level of the efficacy differed depending on their structure and position of substituents. Halogen substituted oxanilates proved relatively more efficient when the substituent was at 4′ position. Amongst the formulations studied, ethyl 4′ fluoroxanilate and ethyl 4′ bromooxanulate were most potent inducing the highest pollen sterility with least phytotoxicity.
Rice, Oryza sativa, male sterility, gametocide, oxanilates
