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Development of a core set in brinjal (Solanum melongena L.)

K.K.Gangopadhyay, R.K.Mahajan*, Gunjeet Kumar, S.K.Yadav, B.L.Meena, Chitra Pandey, I.S.Bisht, S.K.Mishra, N. Sivaraj, Rajeev Gambhir, S.K.Sharma, and B.S.Dhillon

K.K.Gangopadhyay, R.K.Mahajan, Gunjeet Kumar, S.K.Yadav, B.L.Meena, Chitra Pandey, I.S.Bisht, S.K.Mishra, N. Sivaraj, Rajeev Gambhir, and S.K.Sharma, National Bureau of Plant Genetic Resources, Pusa Campus, New Delhi-110 012, India; B.S.Dhillon, Institute of Plant Breeding, Seed Science, and Population Genetics, University of Hohenheim, 70593 Stuttgart, Germany. Received --------------------------. * Corresponding author ([e-mail])

Abbreviations: c.o., Causal organism; H´, Shannon-Wiener Diversity Index; NBPGR, National Bureau of Plant Genetic Resources; PC, Principal Component; PCSS, Principal Components Score Strategy.
ABSTRACT
Brinjal (Solanum melongena L.) is an important solanaceae vegetable. It is a good source of minerals and vitamins and has medicinal properties. India, being a primary center of origin, possesses large variability for growth habit; leaf blade lobing; calyx color; fruit shape, size, and color; and color distribution. The objective of this study was to develop a core set of brinjal germplasm to facilitate access, conservation, and utilization. Germplasm accessions (1798) were evaluated in 2005 and 2006. Data were recorded for 28 morphological (14 qualitative and 14 quantitative) descriptors. The accessions were classified into 15 groups based on the regions and continents of their origin. Ten percent accessions were allocated to different groups, in direct proportion to the diversity summed across all qualitative descriptors in a group. From each group, accessions were selected by the “principal component score strategy”. A comparison of means, variances, and phenotypic correlations for quantitative descriptors, and the Shannon–Wiener Diversity Index (H´) for qualitative descriptors

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