Inheritance of some Important Agronomic Traits in Hulless Barley

Gene effects for important quantitative traits of two hulless barley crosses (ICNBF93-369 x ICNBF-582 & SB91925 x ICB-102607) were estimated by generation mean and variance analysis. Three-parameter model [m, d, j] provided the best fit for plant height and yield per plant in cross SB91925 x ICB-102607 and number of tillers and days to maturity in both crosses. Five parameter model [m, d, h, j, l] was observed for plant height and grain yield per plant in cross ICNBF93-369 x ICNBF-582 and number of grain per spike in cross SB91925 x ICB-102607 and five-parameters model [m, d, h, i, l] was adequate for number of grains per spike in cross ICNBF93-369 x ICNBF-582. Genetic variance analysis showed that additive gene action in inheritance of plant height, number of tillers and days to maturity. Although in cross ICNBF93-369 x ICNBF-582 the dominance effects had a greater share, in cross SB91925 x ICB-102607 the additive effects played major role in the inheritance of grain yield per plant, since narrow sense heritability of this trait was low. © 2010 Friends Science Publishers