Vol. 10 (3) : May-June 2019 issue
Green Farming Vol. 10 (3) : 319-322 ; May-June, 2019
Gene action and combining ability analysis for yield and its components in rice (Oryza sativa L.)
P.K. PATEL1*, P.B. PATEL2 and A.C. SOLANKE3
Department of Genetics and Plant Breeding, N.M. College of Agriculture, Navsari Agricultural University, Navsari - 396 450 (Gujarat)
Designation : 1Ph.D. Scholar *(pooja.agri1992@gmail.com), 2Associate Research Scientist, 3Ph.D. Scholar
Subject : Crop Genetics and Plant Breeding
Paper No. : P-7629
Total Pages : P-7629
Received : 07 May 2019
Revised accepted : 28 May 2019
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Citation :
P.K. PATEL, P.B. PATEL and A.C. SOLANKE. 2019. Gene action and combining ability analysis for yield and its components in rice (Oryza sativa L.). Green Farming Vol. 10 (3) : 319-322 ; May-June, 2019
ABSTRACT
Evaluation of 36 F1 hybrids were involving nine parents in diallel fashion, data recorded on eight agronomical characters. Among parents, IET-25453, IET-25478, IET-24772 and IET-25477 exhibited high gca effects for grain yield per plant and were observed as good general combiner for grain yield and most of its contributing characters and these may be utilized in further breeding programme. The cross combinations viz., IET-24783 x IET-25459, IET-25478 x IET-24336 and IET-24766 x IET-24772 recorded the highest sca effects for grain yield per plant and and its attributing character. Combining ability analysis indicated that the variance due to SCA was higher for all the characters signifying preponderance of non-additive type of interactions among the hybrids. Under such circumstances, recurrent selection as well as heterosis breeding procedure seems to be the most appropriate breeding method for development of good hybrids for fulfillment of current as well as future needs.
Key words :
Combining ability, Diallel crosses, Rice, Yield attributes.
