Studies on Genetic Divergence in Tulsi (Ocimum basilicum) under Semi-Arid Conditions for the Development of Novel Cultivars
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Authors
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Vijay Kumar C Talawade
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Krishan Kumar
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Arya
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Satyender Singh
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Ishwar Singh
Abstract
In the present investigation, 40 Tulsi (Ocimum basilicum) genotypes were grown in RBD in the Research Area of Medicinal, Aromatic
and Potential Crops Section, Department of Genetics and Plant Breeding, CCS Haryana Agricultural University, Hisar. The observations
were recorded for 17 quantitative traits. All the genotypes were grouped into 10 different clusters, demonstrating the presence of
genetic divergence among the genotypes studied. The maximum intra-cluster distance was recorded for cluster VII and maximum
inter-cluster distance was recorded between cluster II and cluster X. Relative contribution of diverse traits towards genetic diversity
analysis revealed that 1000 seed weight contributed maximum (41.41%) towards genetic divergence followed by number of spikes
per plant (17.31%), fresh herbage yield per plant (13.46%) and oil content (10.77%). Based on the maximum mean performance for
seed yield, number of primary branches, fresh as well as dry herbage yield, oil content and seed vigour index-I & II, the genotypes EC
338772, EC 388890 and IC 326732 may be exploited in the breeding program for the development of novel improved cultivars of Tulsi
for higher oil content, seed yield, and other economic traits.
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