HETEROSIS AND COMBINING ABILITY ANALYSIS FOR SEED YIELD AND ITS ATTRIBUTES IN INDIAN MUSTARD [BRASSICA JUNCEA (L.) CZERN & COSS.]

Article Id: ARCC081 | Page : 535-539
Citation :- HETEROSIS AND COMBINING ABILITY ANALYSIS FOR SEED YIELD AND ITS ATTRIBUTES IN INDIAN MUSTARD [BRASSICA JUNCEA (L.) CZERN & COSS.].Indian Journal Of Agricultural Research.2013.(47):535-539
R.A. Gami* and R.M. Chauhan1 ramangami@gmail.com
Address : Department of Genetics and Plant Breeding, C.P. College of Agriculture, S.D. Agriculture University, Sardarkrushinagar-385 506 India

Abstract

Combining ability, gene action and heterosis was studied in a set of six parental lines, four tester and their hybrids of Indian mustard following a L x T mating design. The parents PUSA BOLD and BIO-902 exhibited significant and positive GCA effects for seed yield per plant while parental genotype PCR-7 was good general combiner for 1000-seed weight. The ratio of  ó2gca / ó2sca being less than unity for all yield attributing traits indicated predominance of non-additive gene action for all the traits. The hybrids SKM-9820 X GM-2 and PCR-7 X VARUNA revealed highest SCA effects and Heterosis over batter parent and standard parent. Considering mean performance, heterosis and combining ability effects, the parents GM 2, SKM-9033, PUSA BOLD, SKM-9820 and hybrids SKM-9820 x GM 2, PCR-7 x VARUNA and SKM-9033 x VARUNA were found to be promising for exploitation of heterosis and to undertaken crossing program to obtain desirable segregants.

Keywords

Combining ability GCA Gene action Heterosis Line x Tester (LxT) SCA.

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