Exploring genetic diversity in brinjal (Solanum melongena L.) - Insights from D2 analysis and principal component analysis

Exploring genetic diversity in brinjal (Solanum melongena L.) - Insights from D2 analysis and principal component analysis

Authors

  • Chakravaram Alekhya Kerala Agricultural University
  • Raji Vasudevan Namboodiri Kerala Agricultural University

Keywords:

Brinjal, Principal Component Analysis, D2 analysis

Abstract

In the present study, genetic divergence was quantified in thirty brinjal accessions based on 22 morphologicaldescriptors using multivariate techniques. The 30 brinjal genotypes were divided into nine clusters using D2statistic (Tocher’s method). The distance between clusters IV and IX was the highest (214.67), followed byclusters IV and VIII (186.04). The largest distance between genotypes within a cluster was found in ClusterI (65.30), followed by Clusters IV, III, and II. For fruit breadth and single fruit weight, Cluster IV withgenotypes SM-12 and SM-19 had the highest cluster means. Cluster VI with the genotype SM-14 had thehighest cluster mean values for fruit yield per plant and yield per harvest. In Principal Component Analysis(PCA), first four PCs (Principal Components) contributed 59.661% of the total variation and the first sevencomponents were with eigenvalues>1 for the 30 brinjal genotypes. The accessions SM-9, SM-12, SM-19,SM-14 and SM-27 were placed distinctly in the scatter plot of PCA as well as in different clusters with highinter-cluster distance in cluster analysis of Tocher’s method. Based on this, it can be inferred that crossesbetween these genotypes can be used to produce heterotic hybrids in future crop improvement programs.

References

Ahmed, N., Singh, S. R., Lal, S., Mir, K. A., Asima, A., Habib, K., Salmani, M. 2014. Assessment of genetic diversity in brinjal genotypes using multivariate analysis. Indian J. Hortic. 71(4): 494-498.

Barik, S., Ponnam, N., Acharya, G.C., Singh, T.H., Dash, M., Sahu, G.S., and Mahapatra, S.K. (2021). Genetic variability, character association and diversity studies in brinjal (Solanum melongena L.). Electr. J. Plant Breed. 12(4): 1102-1110.

Davidar, P., Snow, A. A., Rajkumar, M., Pasquet, R., Daunay, M. C., and Mutegi, E. 2015. The potential for crop to wild hybridization in eggplant (Solanum melongena; Solanaceae) in southern India. Am. J. Bot. 102:129-139.

Gopinath, P.P., Parsad, R., Joseph, B., Adarsh, V.S. 2020. GRAPES: General Rshiny Based Analysis Platform Empowered by Statistics.https://www.kaugrapes.com/home.

GoI (Government of India), 2022. 3rdadvanced estimates of brinjal production for 2021-2022. [on-line]. Available: indiastat.com/table/agriculture/selected-state-wise-area-production-productivity-b/1424694. [15 February 2023].

Knapp, S., Vorontsova, M. S., and Prohens. J. 2013. Wild relatives of the eggplant (Solanum melongena L.: Solanaceae): New understanding of species names in a complex group. PLoS One 8(2):e57039.

KAU (Kerala Agricultural University).2016.Package of Practices Recommendations : Crops (14th Ed.)Kerala Agricultural University, Thrissur, 360p.

Mutegi, E., Snow, A. A., Rajkumar, M., Pasquet, R., Ponniah, H.,Daunay, M. C., and Davidar. P. 2015. Genetic diversity and population structure of wild/weedy eggplant (Solanum insanum; Solanaceae) in southern India: Implications for conservation. Am. J. Bot. 102:140-148.

Pandey, I. 2007. Genetic diversity in grain cowpea [Vigna unguiculata (L.) Walp.]. Legum. Res. 30(2): 92-97.

Rao,C.R.1952. Advanced Statistical Methods in Biometrical ResearchEdn. 1.John Wiley and Sons, Inc., New York.

Rotino, G.L., Sala, T., and Toppino, L. 2014. Eggplant. In: Pratap, A., and Kumar, J. (eds.),Alien gene transfer in crop plants. Springer, New York, pp. 381-409.

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Published

27-07-2024

How to Cite

Alekhya, C., & Namboodiri, R. V. (2024). Exploring genetic diversity in brinjal (Solanum melongena L.) - Insights from D2 analysis and principal component analysis. Journal of Tropical Agriculture, 62(1), 65–71. Retrieved from https://jtropag.kau.in/index.php/ojs2/article/view/1373

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