Variability analysis for seed yield and its contributing traits among flax type Linseed (Linum usitatissimum L.) genotypes in Chhattisgarh

Abstract

An experiment was conducted during rabi season 2017-18 and 2018-19 the experiment was carried out in a Randomized Complete Block Design with three replications. Twenty-five flax type (height more than 70 cm) linseed genotypes along with check (Nagarkot) were collected from AICRP on Linseed, Department of Genetics & Plant Breeding, College of Agriculture, IGKV, Raipur (C.G.) to evaluate the amount of genetic variation among the flax type linseed accessions. Analysis of variance indicated that flax type linseed genotypes were highly significant for all the traits taken under study such as, plant height (cm), technical plant height (cm), days to 50 % flowering, days to maturity, number of capsules per plant, number of seeds per capsule, 1000 seed weight (g), seed yield per plant (g), harvest index (%), number of primary branches per plant, number of secondary branches per plant, total number of branches per plant. Highest mean performance for plant height is recorded for FLAX-2018-12 which was followed by FLAX-2018-9 (98 cm) and FLAX-2018-14 (95.7 cm.) whereas, highest mean performance for seed yield (g) is observed in NAGARKOT (5.94 g) which was followed by MEERA (5.44 g) and SHEELA (5.09 g). Phenotypic Coefficient of Variation for all the traits under investigation was found to be higher than their corresponding Genotypic Coefficient of Variation, indicating masking effect of environment in the expression of traits. In variability studies the PCV and GCV showed a smaller amount of variation, which signifying influence of genetic causes in the expression of these traits thus, there is possibility of improvement through selection of these traits taken under study.