Genetic Variability, Correlation and Path Analysis in Linseed (Linum usitatissimum L.) Genotypes
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Date
2020-08-14
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COLLEGE OF AGRICULTURE, UMMEDGANJ, KOTA
Abstract
The experiment entitled “Genetic Variability, Correlation and Path Analysis in Linseed (Linum usitatissimum L.) Genotypes” was conducted at College of Agriculture, Ummedganj, Agriculture University, Kota (Raj.) during Rabi 2019-20. The experiment consisted thirty-six genotypes including checks and it was conducted with three replications in Randomized Block Design (RBD). Statistical analysis was done for genetic variability, heritability, genetic advance as per cent of mean, correlation and path analysis. Highly significant differences were found between the linseed genotypes for all the character studied.
The phenotypic coefficient of variation (PCV) was higher than genotypic coefficient of variation (GCV) for all the character studied. GCV and PCV were highest for number of capsules per plant followed by number of primary branches per plant. Heritability was high for all the characters except number of seeds per capsule, protein content and seed yield per plant. Greater magnitude of heritability coupled with moderate to high genetic advance as per cent of mean was observed for number of capsules per plant, number of primary branches per plant, plant height, seed yield per plant and 1000 seed weight revealed that simple selection can be led to fast genetic improvement of the linseed genotypes under the study.
Seed yield per plant showed positive correlation with plant height, number of capsules per plant, 1000 seed weight and protein content, while highly correlated with number of capsules per plant. Path coefficient analysis revealed that number of capsules per plant had strong positive direct effect on seed yield per plant.
Based upon genetic variability, heritability, genetic advance as per cent of mean, correlation and path coefficient analysis, it was concluded that number of capsules per plant, number of primary branches per plant, 1000 seed weight and plant height were most important yield components in linseed breeding programme.
Based upon mean performance of the linseed genotypes RL-15582, RL-15594,180206, 180203, RL-15597 considerably showed higher mean values for seed yield basis, so these genotypes can be used in further breeding application for development of varieties and in hybridization programme.
* A post graduate student, Department of Genetics and Plant Breeding, College of
Agriculture, Ummedganj, Kota, Agriculture University, Kota.
** Thesis submitted in partial fulfillment of the requirement for M.Sc. (Ag.) degree in Genetics and Plant Breeding under the supervision of Dr. Sandhya, Assistant Professor, Department of Genetics and Plant Breeding, Agriculture University, Kota.
Description
Genetic Variability, Correlation and Path Analysis in Linseed (Linum usitatissimum L.) Genotypes