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Journal: Vegetos- An International Journal of Plant Research

Article DOI :10.5958/j.2229-4473.26.2s.130
Year :2013, Volume : 26, Issue :2s
First page : (121) Last page : (130)
Print ISSN : 0970-4078. Online ISSN : 2229-4473.


Variability and Genetic Structure among Lablab Bean Collections of India and their Relationship with Exotic Accessions

Venkatesha S. C.1, Ganapathy K. N.*, Gowda M. Byre2, Gowda P. H. Ramanjini3, Mahadevu P.4, Girish G.2, Ajay B. C.5

Directorate of Sorghum Research, Rajendranagar, Hyderabad-500 030
1College of Horticulture, University of Horticultural Sciences, Bagalkot, Mysore-571 302
2All India Co-ordinated Research Project on Pigeonpea, University of Agricultural Sciences, Bangalore-560 065
3Department of Biotechnology, University of Agricultural Sciences, Bangalore-560 065
4Zonal Agricultural Research Station, University of Agricultural Sciences-Bangalore, Mandya-571 405
5Directorate of Groundnut Research, Junagadh, Gujarat-362001

*Corresponding author Email:

Lablab purpureus (L.) Sweet is an ancient multipurpose legume that combines use as human food and forage in addition to serving as a cover crop for soil conservation. The crop is believed to be cultivated in south India as early as 1400 – 1500 BC. Although wide variability for agro-morphological traits exists in India, a more extensive germplasm collection and evaluation has not been reported so far. Hence the present study was undertaken with a set of 360 lablab accessions mainly collected from south India including nine accessions of exotic origin. All the 360 accessions were characterized for 29 qualitative and 10 quantitative traits. From genetic structure analysis using STRUCTURE software, the 360 accessions classified into seven groups indicating high level of genetic structure. Further, there exists very high genetic differentiation between the exotic and the lines of Indian origin as also evident from biplot and scatter plot analysis. Although the exotic lines deviated for the Indian lines for majority of the traits, much of the useful variation for genetic improvement of vegetable traits existed among the Indian accessions while, the exotic lines possessed traits of forage importance.