I. R. Suthanthirapandian, K. Palanisamy, C. Muthukrishnan
Indian Journal of Horticulture
Investigations with 97 clones of aggregatum onion (Allium cepa L. var. aggregation Don.) indicated that (1) in general the genotypic coefficient of variations was lower than the phenotypic one indicating the larger influence of environment, (ii) weight of plant and weight of bulbs per plant exhibited a high degree of both phenotypic and genotypic coefficients of variation while number of shoots per plant had the least coefficient of variation; (iii) high heritability estimates were obtained for all characters except plant height and (iv) high heritability and high genetic advance were observed for number of bulbs per plant, weight of plant and weight of bulbs per plant indicating additive gene effects for these traits.