In the present study, 4 CMS lines and 12 testers were crossed in line x tester fashion. The
48 Fl hybrids along with 16 parents and 2 standard checks (APSH-ll and MSFH-8) were
grown to estimate gca and sca for eight characters. The CMS 7-1A, EC 68415 Bulk and EC
68415 were good combiners for seed yield, while CMS 234A, CMS 207A among lines and
EC 68415 among testers showed good gca effects for earliness. Among hybrids, the best
performance for seed yield (56.9 g/plant) and sca effects were noticed for CMS 7-1A x EC
68415 S2 which outyielded the standard check APSH-ll by 47.6 per cent. The highest oil
content coupled with high yield/plant was recorded in the hybrids CMS 300A x EC 68415
S4J CMS 300A x Morden S3 and CMS 7-1A x Morden S3.
Keywords: Sunflower, Helianthus a1!nuus, heterosis, specific combining ability.
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906
S. R. KHURANA AND NISCHINT BHATIA info_circle