Study on Fertility Characteristics of No-pollen Genic Sterile Line Rice Te-you-zhan S

The fertility of no-pollen genic sterile line Te-you-zhan S was studied through the ways of classical Genetics.The results showed that in the summer of Hubei,the line appeared long period sterility and stabile sterility.The pollen abortion type was no-pollen,and the fertile transformation temperature was 22℃;There was a significant fertility transition phase,i.e.its fertile transformation had stages step by step from no-pollen to seldom but typical abortive pollens,to more and typi-cal abortive pollens,then to dyeing abortive pollens and up to snuff at last.Therefore,under impacted by low temperature in its sterile phase it could not transform into fertility,which could effectively avoid the lowering of seed purity induced by low temperature when two-line hybrid rice seeds were produced.Only low temperature and short light length in long period could induce higher fertility.The sterility of Te-you-zhan S could be restored.Its sterility was inherited according to a pair of recessive genes.No-pollen genic sterile line could be improved to remove the stab in the development of recent two-line hybrid rice,and it would be worth discovering the development of pollen and sterility.