EVALUATION OF SOME CYTOPLASMIC MALE STERILE LINES OF RICE IN KONKAN REGION OF MAHARASHTRA STATE

摘要

Sixteen CMS and maintainer lines office derived from six different sources were evaluated in two seasons viz Rahi 1998 and Kharif 1999 and observed for pollen/spikelet sterility and performance of agronomic characters. Ten, five and one CMS lines arecategorized as early, midlate and late duration, respectively AICMS lines flouered late as compared to their respective maintainers in both the seasons Height of all CMS lines was shorter than their respective maintainer lines in both the seasons. The CMS lines viz., IR68886 A, IR68897 A, IR68901 A, IR 68885 A, G46 A, IR58025 A, IR69628 A and PMS 2 A had complete pollen and spikelet sterility, dwarf plant type, caily, midlate and late duration, better panicle exsertion. outcrossing rate and other desirable agronomic traits. These lines can be utilized for exploiting hybrid vigour in rice.