Combining ability and gene action studies in castor (Ricinus communis L.): Combining ability and gene action studies in castor (Ricinus communis L.)

K SADAIAH; G NEELIMA; V DIVYA RANI; G MADHURI; N NALINI; M SUJATHA; M GOVERDHAN

doi:10.56739/jor.v40iSpecialissue.145568

Authors

K SADAIAH Regional Agricultural Research Station, PJTSAU, Palem, Nagarkurnool district, Telangana – 509215.
G NEELIMA Regional Agricultural Research Station, PJTSAU, Palem, Nagarkurnool district, Telangana – 509215.
V DIVYA RANI Regional Agricultural Research Station, PJTSAU, Palem, Nagarkurnool district, Telangana – 509215.
G MADHURI Regional Agricultural Research Station, PJTSAU, Palem, Nagarkurnool district, Telangana – 509215.
N NALINI Regional Agricultural Research Station, PJTSAU, Palem, Nagarkurnool district, Telangana – 509215.
M SUJATHA Regional Agricultural Research Station, PJTSAU, Palem, Nagarkurnool district, Telangana – 509215.
M GOVERDHAN Regional Agricultural Research Station, PJTSAU, Palem, Nagarkurnool district, Telangana – 509215.

https://doi.org/10.56739/jor.v40iSpecialissue.145568

Keywords:

Castor, Combining ability, Gene action, GCA, SCA

Abstract

The present study of combining ability and gene action studies will be helpful in identifying better combiners to yield superior hybrids along with selection protocol for the trait of interest. Analysis of variance studies revealed that significant variation exists in the material understudy. Higher estimates of SCA variance were observed than the GCA variance except for seed yield indicating preponderance of non-additive gene action in governing the traits. Significant gca effects were observed in SKP-84 and ICS-142 for seed yield and PPL-1001, SKI-215, DCS86, PCS-327 and Kiran for oil content. Significant sca effect was observed for the crosses viz., M-574 x Kiran, PPL1001 x SKI-215 and SKP-84 x JI-244 for total yield.

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References

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Combining ability and gene action studies in castor (Ricinus communis L.)