Genetic variability, heritability and genetic advance of yield and quality traits in linseed (Linum usitatissimum L.)

Abstract

The present studies were carried out with a set of eight varieties of linseed and their twenty eight F 1 's obtained through diallel crossing excluding reciprocals. The eight parents and their 28 F 1 s were grown in a randomised block design during Rabi season of 2012 and studied for fifteen quantitative and qualitative characters. The analysis of variance showed highly significant differences among the genotypes for all the characters studied except days to maturity in F 1 s. The genetic coefficient of variance was high in number of capsules per plant, linolenic acid content in F 1 s. The highest value of heritability was observed in linoleic acid content among parents whereas among crosses it was the highest in case of linolenic acid. Highest genetic advance was exhibited by number of capsules per plant in case of both parents and crosses. Genetic advance expressed as per cent of mean was the highest in steric acid per cent for parent and seed yield per plant for crosses in F 1 s. The traits with high heritability and high genetic advance may be subjected to mass or progeny or family selection or any selection scheme, aimed at exploiting additive (fixable) genetic variance, a widely adapted genotype can be developed, possessing good quality and high productivity.

Genetic variability, heritability and genetic advance of yield components and oil quality parameters in linseed (<em>Linum usitatissimum</em> L.)

“…Genetic advance as per cent of mean ranged between 11 (11.30 and 11.28) indicating that these traits should be given due importance while selecting high yielding genotypes. These results are in accordance with reports of other workers in linseed by Shipra et al (2016) [15] , Frank et al (2017) [7] and Amith et al (2017) [1] . High PCV and GCV values exhibited for number of branches per plant, number of capsules per plant, yield per plant, palmitic acid and linoleic acid indicating wide range of variability with substantial environmental influence on the expression of these traits and provide better opportunity for improvement of these traits through selection.…”

Promising salt tolerant soybean mutants developed through gamma ray irradiation

“…Soybean is known to be a moderately salt-sensitive crop, and therefore, to ensure the potential production of soybean we need to minimize the salt stress-induced damages in soybean (Hasanuzzaman et al, 2016). The present investigation of M 6 generation selection procedure also supported by Shalini et al, (2016) and Upadhyay et al, (2019). The positive responses of mutation breeding for developing early maturity with higher yield salt tolerant soybean mutants was also found in Malek et al, 2022;Nilahayati et al, 2019 andTyagi (2010) report from several experiments.…”