International Journal of Multidisciplinary Research and Development

International Journal of Multidisciplinary Research and Development


International Journal of Multidisciplinary Research and Development
International Journal of Multidisciplinary Research and Development
Vol. 8, Issue 9 (2021)

Combining ability analysis for its components in bread wheat (Triticum aestivum L.) using line x tester


Shazia Parveen, Sibgha Noreen, Syed Bilal Hussain, Tahir Naqqash, Muhammad Zubair

Four strains CB-35, CB-212, CB-214 and CB-219 and one commercial variety Miraj-2008 were used as lines (female parents). Two land races LR-01 and LR-02 were used as male parents (testers) design. Line x Tester used in order to estimate the combining ability and genetic components for its important traits. Miraj-2008 proved to be a good general combiner for all traits under study except grain weight per spike. Estimates of variances due togeneral combining ability (GCA), specific combining ability (SCA) and GCA/SCA ratio indicates that traits showed under control of additive gene action which is good for selection and varietal development. The cross-combination CB-214 x LR-02 exhibit good SCAfor number of tillers per plant and days to 50% headings. Both traits contribute to ultimate grain yield. Cross CB-212 x LR-02 possess highest value of SCA for days to taken for anthesis. CB-219 x LR-1 and CB-214 x LR-02 are good specific combiners for days to maturity and grain weight per spike. It is expected that these cross combinations will yield transgressive segregates.
Pages : 22-24