Genetic variability in onion.

摘要

Studies on genetic variability in onion (Allium cepa) exhibited significant differences among the ecotypes for most of the characters except for shape index indicating high variability. The estimates of phenotypic coefficient of variation were highas compared to genotypic coefficient of variation. Very high values for heritability were observed for volume of bulb (96.50%) followed by bulb yield (91.62%). All other characters showed high heritability except for pyruvic acid content (14.99%). Weightof plant, bulb length, bulb diameter, volume of bulb and bulb yield/plant recorded very high heritability estimates coupled with high genetic advance.