Combining ability studies for development of new hybrids in rice over environments

P. Saidaiah, S. Sudheer kumar, M.S. Ramesha


Combining ability study on grain yield and its components from line x tester analysis over the locations of five
well adapted CMS lines and twenty three testers of different eco-geographic origin revealed higher SCA variance
than GCA variance for all the traits indicating the prevalence of non-additive gene action. The lines APMS 6A,
PUSA 5A and CRMS 32A and testers 1096, 1005, IBL-57 and SC5 9-3 were the good general combiners for
yield and its majority of the traits. IBL-57 was the only good general combiner among the male parents for
earliness, dwarfness and grain yield per plant. The hybrids APMS 6A x SC5 9-3, APMS 6A x 1005 and APMS
6A x GQ 25 were identified as potential one for yield and desired traits based on sca effects.

Full Text:



Copyright (c)

Journal of Agricultural Science   ISSN 1916-9752 (Print)   ISSN 1916-9760 (Online)  E-mail:

Copyright © Canadian Center of Science and Education

To make sure that you can receive messages from us, please add the '' domain to your e-mail 'safe list'. If you do not receive e-mail in your 'inbox', check your 'bulk mail' or 'junk mail' folders.