CYTOLOGICAL OBSERVATIONS ON INDUCED GENETIC MALE STERILE MUTANTS IN RICE (ORYZA SATIVA L.)

作     者：卢永根,J.NEIL RUTGER 

作者机构：South China Agricultural College Guangzhou University of California Davis U.S.A Research geneticist and professor USDA-ARS Department of Agronomy and Range Science University of California Davis 

出 版 物：《Science China Chemistry》 (中国科学:化学(英文版))

年 卷 期：1984年第27卷第5期

页      面：482-493页

核心收录：

主　　题：ORYZA SATIVA L CYTOLOGICAL OBSERVATIONS ON INDUCED GENETIC MALE STERILE MUTANTS IN RICE 

摘      要：The eytological basis of pollen abortion was investigated in rice genetic male sterile(GMS) lines controlled by single recessive genes. Four types, namely stainable pollen abor-tion (SPA), partial pollen abortion (PPA), complete pollen abortion (CPA), and no pollen(NP), were compared with the original cultivar M-101. Observations on chromosome beha-vior and tetrad analysis at meiosis showed that apparent chromosome aberrationswere closely related to the sterility in these GMS lines. The cytological abnor-malities occurring during the pollen development in these rice GMS lines were more pro-found and extensive than those reported in cytoplasmic male sterile (CMS) rice. At leastthirteen kinds of abnormalities were seen from the pre-meiotic stages to post-meiotic stagesin this study. The existence of microsporocytic pseudoplasmodium, sticking pollen, andpollen dissolution implied that abnormalities were occurring simultaneously in the anther walllayers, particularly in the tapetum.