Genetic variability and correlation analysis in guava.

摘要

Field studies were conducted in Pantnagar, Uttar Pradesh, India, to determine the genetic variation, heritability and genetic advance (GA) of 13 fruit characters in 15 guava genotypes. Significant differences were observed for almost all traits studied, i.e. fruit weight, fruit length, fruit diameter, acidity and ascorbic acid with high values of genotypic coefficient of variation, phenotypic coefficient of variation, h2 and GA, which makes them prime traits for direct selection. Total soluble solids, total sugars, reducing and non-reducing sugars with high values of h2 and nearly moderate values of GA are the other important characters which were considered for selection. The fruit yield per tree was positively and significantly correlated with fruit weight and fruit length.