COMBINING ABILITY ANALYSIS IN BLACKGRAM (Vigna mungo (L.) Hepper)

K. SANGEETHA¹*, C. VANNIARAJAN², N. MANIVANNAN³, N. SENTHIL⁴, R. ANANDHAM⁵, R. VIJAYALAKSHMI^6
1Department of Plant Breeding and Genetics, Agricultural College and Research Institute, Tamil Nadu Agricultural University, Coimbatore, 641003, Tamil Nadu, India
²Department of Plant Breeding and Genetics, Agricultural College and Research Institute, Tamil Nadu Agricultural University, Coimbatore, 641003, Tamil Nadu, India
³National Pulses Research Centre, Vamban, 622303, Tamil Nadu Agricultural University, Coimbatore, 641003, Tamil Nadu, India
⁴Department of Biotechnology, CPMB, Tamil Nadu Agricultural University, Coimbatore, 641003, Tamil Nadu, India
⁵Department of Agricultural Microbiology, Tamil Nadu Agricultural University, Coimbatore, 641003, Tamil Nadu, India
⁶Department of Food Science and Nutrition, Community Science College & Research Institute, Madurai, Tamil Nadu Agricultural University, Coimbatore, 641003, India
* Corresponding Author : dasha.sangeetha29@gmail.com

Received : 05-10-2019     Accepted : 26-10-2019     Published : 30-10-2019
Volume : 11     Issue : 20       Pages : 9165 - 9168
Int J Agr Sci 11.20 (2019):9165-9168

Keywords : Specific combining ability, Blackgram, Transgressive segregants
Academic Editor : S. Sarvade, Dr G A Rajanna
Conflict of Interest : None declared
Acknowledgements/Funding : Authors are thankful to Department of Plant Breeding and Genetics, Agricultural College and Research Institute, Tamil Nadu Agricultural University, Coimbatore, 641003, Tamil Nadu, India
Author Contribution : All authors equally contributed

Combining ability studies were carried out through line x tester analysis involving four lines and five testers for nine quantitative traits in blackgram. The relative estimates of variance due to specific combining ability (sca) were higher than variance due to general combining ability (gca) for plant height and number of pods per plant indicating the pre-dominance of non additive gene action for these traits. The parents ACM-16-017, VBN (Bg)8, KKM1 and ACM-16-014 were good general combiners for number of clusters per plant, number of pods per plant and days to 50% flowering. The cross ‘ACM-16-017xVBN8’ exhibited significant positive sca effects for number of clusters per plant, number of pods per plant, number of seeds per pod, 100 seed yield and single plant yield along with high per se performance. The crosses; ACM-16-017xVBN8, ACM-16-017xKKM1, ACM-16-014xVBN8 and ACM-16-014xKKM1 recorded highly significant sca effects as well as high per se performance for number of pods per plant and 100 seed weight. These crosses could be further exploited to obtain transgressive segregants in the breeding programme.

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