Genetic variation and its relationship with yield components in mango cultivars grown under eastern Indian conditions.
Mathura Rai, Reddy N. N., Prasad V. S. R. K.
Author Affiliation: Central Horticultural Experiment Station (IIHR), Ranchi 834 110, India.
Indian Journal of Horticulture 58 : 314-320
Abstract : A study was undertaken to assess the genetic variation and to develop association among growth and yield attributing characters in mango germplasm collected from mango growing belts in Ranchi, Bihar, India. The supremacy in fruit yield was observed in Amin Anguri, Amrapali, Mallika, Langra and Prabha Shankar. Further, cultivars which showed higher phenotypic expression in plant height, girth, spread and tree volume did not express the same trend in plant yield, as it was in the Taimuria, Alphonso, Bombaiya, Gulab Khas and Sipiya. The percentage of edible pulp was very high in Alphonso, Fazali, Mallika, Amrapali and Langra Maldah. The heritability estimates ranged from 28 to 96% for edible pulp and plant yield. High heritability estimates and expected genetic advance were observed for plant yield, average fruit weight and fruit volume. The higher heritability estimates of plant yield were usually higher than other characters which suggest environmental effect constitutes minor portion of total phenotypic variation in this character. Thus, the selection of superior genotypes based on per se would be effective. The plant yield was positively correlated with percent of edible pulp. Similarly, plant height was significantly correlated with girth, spread and tree volume. Partitioning of plant yield revealed that tree volume, average fruit weight, fruit volume, skin weight and percent edible pulp had positive direct effect on plant yield and positive indirect effect with all the attributes.