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Estimation of phenotypic divergence in a collection of Capsicum species for yield-related traits

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Abstract

Phenotypic divergence among the 24 accessions belonging to a collection of six species of Capsicum from different geoclimatic regions available in field gene bank of CIMAP, Lucknow, India, was quantified by multivariate analysis for 12 quantitative and qualitative traits. Based on their values, all 24 accessions were grouped into six clusters such that the genetic stocks within cluster had smaller D 2 values among themselves than those belonging to different clusters. The accessions of Capsicum annuum were distributed in different clusters in morphotyping representing different species, suggesting that taxonomic characteristics are not always related to agronomic traits. No parallelism/association was found between geographical and phenotypic diversity. Accessions 15 and 23 (clusters V and VI, respectively) had distinct identity. The three characteristics that played the greatest role in differentiation were fruit diameter, number of fruits per plant, and leaf diameter, which can be utilized as conventional/morphological markers for the improvement of chilli yield and obtaining good segregants in chilli breeding programs.

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Acknowledgements

The authors express sincere thanks to Dr. Gerard Barendse, Nijmegen Botanical Garden, The Netherlands, D. Saikia for their kind help in germplasm collection, and Council of Scientific and Industrial Research (CSIR), India, for grants and fellowship.

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Authors and Affiliations

  1. Genetic Resources and Biotechnology Division, Central Institute of Medicinal and Aromatic Plants, Lucknow, 226 015, India

    S. T. Thul, R. K. Lal, A. K. Shasany, M. P. Darokar, A. K. Gupta, M. M. Gupta, R. K. Verma & S. P. S. Khanuja

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  1. S. T. Thul
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  2. R. K. Lal
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  3. A. K. Shasany
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  4. M. P. Darokar
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  5. A. K. Gupta
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  6. M. M. Gupta
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  7. R. K. Verma
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  8. S. P. S. Khanuja
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Correspondence to S. P. S. Khanuja.

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Thul, S.T., Lal, R.K., Shasany, A.K. et al. Estimation of phenotypic divergence in a collection of Capsicum species for yield-related traits. Euphytica 168, 189–196 (2009). https://doi.org/10.1007/s10681-009-9882-y

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  • DOI: https://doi.org/10.1007/s10681-009-9882-y

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