Variability and heritability of average yield of onion bulb - Alium сeрa L.

摘要

In order to investigate the variability of bulb yield, the trial was set up on an experimental plot of the Centre for Vegetable Crops in Smederevska Palanka during 1997 and 1998. The trial was performed by applying the method of random block system in five replications. Ten varieties of different geographical origins were included as the research material. The recorded values of the investigated features were determined by applying the variance analysis of a two-factorial trial model 2 (Had?ivukovi?, 1991). The components of the phenotype variance, genotype and phenotype coefficient of variation and heritability in broad sense were estimated according to Singh and Chaudhary (1976). Significant variability was recorded for yield bulbs in both years of investigation. For this parameter, genotype variance was greater than the enviromental. Phenotype coefficient of variation (PCV) was greater than genotype coefficient of variation (GCV). Heritability confirmed that the genotype variability was stronger in the overall phenotype variability.