Inbred line development through B × B crosses for combining ability and gene action in sunflower (Helianthus annuus L.)
2017
C.D. Shrishaila | I. Shanker Goud | D.M. Mannur | Vikas Kulkarni and | M.R. Govindappa
To estimate general combining ability and specific combing ability effects for various characters eight inbred lines were crossed in 8×8 full diallel fashion. The 56 F1 crosses along with parents and checks were planted in simple lattice design with two replication at Main Agricultural Research Station, Raichur during rabi 2015-16. The results exhibited that SCA variances were higher than GCA variances for all traits studied which indicated the presence of non-additive gene action. Three inbreds 39 B, 852 B and 400 B were found to be the best general combiners for majority of the traits. Three crosses 104 B×39 B, 400 B×234 B and 17 B×400 B were found to be the best specific combiners for majority of the characters studied viz., days to 50 % flowering, days to maturity, head diameter, stem girth, volume weight, oil content and seed yield per plant. These specific crosses could be further utilized for deriving desirable inbreds from advanced generations.
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