Estimation Of Genetic Parameters For Agro-Economic Traits And D2 Analysis Among The Half-Sib Progeny Of Menthol Mint (Mentha Arvensis L.)

International Journal of Agriculture & Environmental Science

© 2019 by SSRG - IJAES Journal

Volume 6 Issue 3

Year of Publication : 2019

Authors : K. T. Venkatesha, , Ved Ram Singh, Rajendra Chandra Padalia, Rakesh Kumar Upadyay, Rakesh Kumar , Amit Chauhan

10.14445/23942568/IJAES-V6I3P104

How to Cite?

K. T. Venkatesha, , Ved Ram Singh, Rajendra Chandra Padalia, Rakesh Kumar Upadyay, Rakesh Kumar , Amit Chauhan, "Estimation Of Genetic Parameters For Agro-Economic Traits And D2 Analysis Among The Half-Sib Progeny Of Menthol Mint (Mentha Arvensis L.)," SSRG International Journal of Agriculture & Environmental Science, vol. 6,  no. 3, pp. 17-23, 2019. Crossref, https://doi.org/10.14445/23942568/IJAES-V6I3P104

Abstract:

Menthol mint (Mentha arvensis L.) is an important medicinal and aromatic plant, the essential oil of menthol mint most widely used in food, flavouring, pharmaceuticals, and cosmetic industries. In India, the essential oil yield of presently cultivated menthol mint varieties was reducing, and industry needs varieties having high essential oil yield with more menthol content. The objective of this experiment was to study the magnitude of genetic variability and genetic divergence in twenty-nine newly generated half-sib progeny of menthol mint. All the twenty-nine accessions were evaluated for agro-morphic traits and chemical constituents of essential oil for two consecutive years. Results revealed that, the highest genotypic coefficient of variation (GCV) was observed for menthone content (100.84%), and highest phenotypic coefficient of variation (PCV) was also for menthone content (102.84%). All the seven agro-economic characters showed high heritability (h2) and high genetic advance as a percent of the mean (GAM). By Mahalanobis D2 values, all the twenty-nine accessions were grouped into four different clusters. The cluster-II was the largest group which consist of 15 accessions and the clusters III, IV were smallest clusters, which consist of single accession in each. A significant amount of genetic variability was present in the accessions used in the study, and theses genetically divergent half-sib progenies can be effectively utilized for recombination breeding to get genotype with novel gene combination.

Keywords:

Genetic variability, genotypic coefficient of variation, heritability, phenotypic coefficient of variation.

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