Evaluation of mango fruits in storage for resistance against Anthracnose (Colletotrichum gloeosporioides penz) and Diplodia stem end rot (Diplodia natalensis pole evans)

Abstract

A total number of 28 cultivars of mango fruits were evaluated against the anthracnose pathogen (Colletotrichum gloeosporioides Penz) and Diplodia stem end rot pathogen (Diplodia natalensis Pole Evans) after harvest using hypodermic needle method of inoculation on the Gangetic plains of West Bengal, India during the months from May to July of 1992 and 1993. A wide range of variation in respect of disease reaction occurred among the test cultivars. The average grade ranged from resistant to highly susceptible. Among the 28 cultivars tested, 13 cultivars, namely Alphonso, Langra Banarasi, Chandankosa, Dashehari, Lakshmanbhog, Lalphuli, Langra, Mohanbhog, Piaraphuli, Saradamonibhog, Sarikhas, Totapuri and Zardalu were resistant while seven cultivars namely, Amrapalli, Biswanath Chatterjee, Bombay Yellow, Fazli, Gulabkhas, Kohitoor and Safdar Pasand were moderately resistant to C. gloeosporioides. Among those 28 cultivars only three cultivars namely, Alphonso, Krishnabhog and Totapuri Red Small were resistant while eight cultivars, namely Dashehari, Biswanath Chatterjee, Lakshmanbhog, Lalphuli, Piaraphuli, Saradamonibhog, Totapuri and Zardalu were moderately resistant to D. natalensis. The remaining cultivais were moderately susceptible to highly susceptible in reaction against the respective pathogen.