Abstract
Indian pennywort (Centella asiatica L.) is an emerging medicinal cum nutraceutical herb known for its neuroprotective properties. The antioxidant activity is an important parameter for its supposed benefits. Currently the genetic diversity of the crop remains underexploited and research related to genetic variability of antioxidant activity and its component traits is limited. This experiment was carried out to know the genetic variability in the nutraceutical compositions in 20 accessions collected from hill zone of Karnataka, India (with three checks viz., Arka Prabhavi, Arka Divya and Vallabh Medha). The results showed a wide variation among the accessions for mineral composition viz., phosphorus, potassium, calcium, iron and zinc; phytochemical constituents viz., total carotenoids, anthocyanin, total phenols, total flavonoids, tannins, oxalates, ascorbic acid and antioxidant activity. Most of the parameters such as iron, zinc, total carotenoids, anthocyanin, total phenols, oxalates and antioxidant activity showed higher genotypic and phenotypic coefficient of variability (GCV and PCV, respectively). All the parameters showed higher heritability and genetic advance. Total flavonoids, zinc and total phenols were ascertained to be the major contributors of antioxidant activity according to correlation and path analysis research. The grouping of the accessions based on Mahalanobis D2 analysis resulted in five clusters. These suggests the wider genetic diversity among the accessions. Further, the traits are governed by additive gene action indicating that these characters could be considered for selection for further crop improvement for antioxidant activity.
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Acknowledgements
We are thankful for the Dean and Head of the Department (PSMAC), College of Horticulture, Mudigere, Keladi Shivappa Nayaka University of Agricultural and Horticultural Sciences, Shivamogga, Karnataka, India for extending the facilities to conduct the research.
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Abhishek, J.K., Ravi, C.S., Sudharani, N. et al. Genetic diversity analysis for nutraceuticals and antioxidant activity in selected Indian pennywort (Centella asiatica L.) accessions of hill zone of Karnataka. Genet Resour Crop Evol (2024). https://doi.org/10.1007/s10722-024-01871-1
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DOI: https://doi.org/10.1007/s10722-024-01871-1