Influence of some fruit traits of mango, Mangifera indica L. varieties against maggot development and infestation of mango fruit fly, Bactrocera dorsalis (Hendel)

Abstract

The present study (during year 2014 and 2015) examined the various fruit traits of 10 popular varieties of mango, Mangifera indica in relation to resistance against B. dorsalis under field conditions. Results indicated significant variations among tested varieties in levels of fruit infestation and maggot density inside the fruit. The varieties Amrapali (6.67%), Gulab Khas (20.00%) and Dashehari (15.00%) were found resistant; Jardalu (21.67%) and Maldah (25.00%) were moderately resistant; Himsagar (36.67%) were susceptible while Chausa (40.00%), Mallika (58.33%), Fazli (58.33%) and Bombay Green (61.67%) were found the highly susceptible to B. dorsalis infestation. Principal components were extracted based on fruit traits and first four principal components explained cumulative variation of 89.97 % with eigenvalues >0.5 in B. dorsalis infestation. Mango varieties Amrapali, Gulab Khas and Dashehari were classified as resistant to B. dorsalis and these could be used in future breeding program as resistant sources.