2 (2) 2018, APRIL,2018
Genetic and association studies in Linseed (Linum utitatissimum L.)
Author: R.B. Gudmewad, A.M. Misal, M. K. Ghodke and M. V. Dhuppe
Category: Plant breeding
The present investigation is carried out for evaluation of promising germplasm lines for genetic variability, correlation and path analysis for yield and yield contributing characters in linseed. Estimates of genotypic and phenotypic coefficient of variation indicated significant variability for the traits seed yield per plant, 1000 seed weight, number of capsule per plant, number of secondary branches per plant indicating good scope for genetic improvement of these traits. High heritability coupled with high genetic advance for days to 50 percent flowering, plant height, number of primary branches per plant, number of secondary branches per plant, number of capsule per plant, 1000-seed weight indicating prevalence of fixable type of genetic variation for the expression of these characters. Hence direct selection is highly rewarding in the material. Further significant positive correlation of seed yield per plant existed with number of primary branches per plant, secondary branches per plant, number of seed per capsule, 1000-seed weight and negative association with days to maturity allowed selection of the material for the same. Yield contributing characters like number of seed per capsule, number of capsule per plant, 1000-seed weight, number of primary branches per plant, plant height had highest direct positive effect on seed yield followed by number of secondary branches per plant. Based on the studies of association and path effects it can be suggested that the traits number of capsule per plant, 1000-seed weight, number of secondary branches per plant, number of seed per capsule and plant height are the major determinants of seed yield. The germplasm accession ES-1444, Flate-C-16, ES-1474 may be used as parent’s in future breeding programme for improving seed yield in linseed.
Keywords: Linseed, correlation, path analysis, heritability, yield