Screening of mango germplasm for susceptibility to Colletotrichum gloeosporioides Penz. during different seasons.
Sharma I. M., Badiyala S. D.
Author Affiliation: Regional Horticultural Research Station, Dr. Y.S. Parmar University of Horticultural and Forestry, Bajaura, Kullu, Himachal Pradesh 175 125, India.
Advances in Horticulture and Forestry 6 : 23-30
Abstract : Twenty mango (Mangifera indica) cultivars were screened against anthracnose disease caused by Colletotrichum gloeosporioides [Glomerella cingulata] both under field and laboratory conditions during different growth periods occurring in spring, rainy, and post-rainy seasons. The disease appeared as brown to black spots on the young leaves emerging during different seasons. Of the 20 cultivars tested, Amrapali (50.55 spots/leaf) was highly susceptible followed by Totapari (44.40 spots/leaf) while the lowest disease intensity was recorded on Alphanso (12.86 spots/leaf) followed by Krishan Bhog (14.13 spots/leaf) and Baramasi (14.63 spots/leaf). Other cultivars were either susceptible or moderately susceptible, and none were resistant. Maximum severity of anthracnose disease was recorded during rainy season's flush (growth period) followed by spring and post-rainy season. Artificial inoculation studies showed similar varietal behaviour during different seasons but disease severity was significantly higher as compared to that recorded under natural conditions. Under laboratory conditions these growth periods (seasons) had no influence on the susceptibility of mango leaves to anthracnose disease.