Vol. 6 (5) : September-October 2015 issue
Green Farming Vol. 6 (5) : 970-973 ; September-October, 2015
Heterosis and combining ability for yield and yield component characters in castor (Ricinus communis L.)
P.C. PATELa1*, AMIT DADHEECHc2, P.B. DAVEa3 and A.Y. MAKANIb4
aRegional Research Station, Anand Agricultural University, Anand - 388 110 (Gujarat), bDeptt. of Plant Breeding, S.D. Agric. University, Dantiwad, Palanpur - 385 506 (Gujarat), cDeptt. of Plant Breeding, Rajasthan College of Agric., M.P. University of Agric. & Tehcn., Udaipur - 313 001 (Raj.)
Designation : 1,3SRF *(pranaypatel0407@gmail.com), 2Asstt. Professor, 4Res. Scholar
Subject : Crop Genetics and Plant Breeding
Paper No. : P-3000
Total Pages : 4
Received : 12 December 2014
Revised accepted : 28 August 2015
First Page
Citation :
P.C. PATEL, AMIT DADHEECH, P.B. DAVE and A.Y. MAKANI. 2015. Heterosis and combining ability for yield and yield component characters in castor (Ricinus communis L.). Green Farming Vol. 6 (5) : 970-973 ; September-October, 2015
ABSTRACT
Combining ability and heterosis for yield and its component trait in castor analysed through Line x Tester mating design using five line and ten testers. Analysis of variance revealed that, there is highly significant difference among the parents for all the traits under study. The analysis for combining ability revealed significant mean sum of squares of both general combining ability (GCA) and specific combining ability (SCA) for all the characters which indicated the presence of both additive and non-additive gene actions. The ratio of GCA variance and SCA variance ratio revealed the predominance of non-additive gene action for all the traits except number of nodes up to primary raceme, 100 seed weight and oil content. Among the parents, lines ACP-1-06-07-2, ANDCP-06-07 and SKP-84 whereas, tester DCS-47, JI-321, SKI-215 and PCS-124 were found good general combiners for seed yield per plant and majority of yield contributing traits. While tester ANDCI-15 and ANDCI-8 were considered good general combiner for days to 50% flowering and for days to maturity. The cross ACP-1-06-07-2 x SKI-299, ANDCP-06-07 x SKI-270 and JP-65 x JI-321 exhibited significant positive SCA effects for seed yield per plant and its component traits. In general for yield and its component traits the promising hybrids with high heterosis and mean performance were ACP-1-06-07-2 x SKI-299, SKP 84 x DCS 47, ANDCP 06-07 x SKI 215, ACP-1-06-07-2 x SKI-215 and ANDCP 06-07 x SKI 270 at par with check. These cross combination could be utilised for further use in breeding programme for improvement in yield of castor.
Key words :
Castor, GCA and SCA effects, Heterobeltiosis, Standard heterosis, Yield and yield components.
