ASSESSMENT OF GENETIC VARIABILITY AND PERFORMANCE OF ISABGOL (Plantago ovata Forsk.) GENOTYPE IN SOUTH-EAST REGION OF RAJASTHAN
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Date
2022
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College of Horticulture and Forestry, Jhalawar
Abstract
Genetic variability, correlation and path analysis were studied in a set of 14 genotypes
of Isabgol grown in a randomized block design with three replications at the College of
Horticulture and Forestry, Jhalawar during Rabi season of 2021-22. Analysis of variance
revealed significant genotypic differences for all the characters under study. Highly
significant differences among the genotypes for all the characters indicate that variation
among the genotypes is heritable. The genotype Jawahar recorded maximum seed yield per
plant (5.95 g) and also the performance of this genotype was better for other yield attributes
characters. The genotypes Mayuri (5.81 g), PB-6-3 (5.04 g) and Niharika (4.35 g) recorded
higher seed yield per plant. Phenotypic coefficient of variation is higher than genotypic
coefficient of variation for all the characters under study, so it could be concluded that
phenotypic selection would be more effective. The character association studies indicated that
the advantages of upgrading Isabgol genotypes through simultaneous selection for plant
height at maturity, number of tillers per plant, number of spikes per plant, number of seeds
per spike, husk content per plant percent, husk content per plant and swelling index. The data
pertaining to path coefficient revealed that husk content per plant (g), days to 50% flowering,
swelling index and seed moisture indicating that selection should be made on the basis of
these traits for improvement in seed yield of Isabgol.