Combining ability analysis of some yield components in rice (oryza sativa l.)

摘要

With diallel cross of seven varieties of rice (Biser-2, Ranka, Medusa, S-136, Arborio Bjanko, Baldo and Loto) was conducted an analisys of their combining abilities for panicle length, number of grains per panicle and grain mass per panicle. Highly significant values on general (GCA) and specific combining abilities (SCA) in the F1 and F2 generations were found for all analyzed traits. Biser-2, Ranka and S-136 are the best combiners for panicle length, Biser-2 and Ranka for number of grains per panicle and Biser-2 for grains mass per panicle. Superior hybrid combinations were obtained in which one parental variety has good and the other one has bad to medium general combining ability.ududKey words: rice, combining ability, diallel analysisud