2.6 Reduction of anthracnose lesion development Mangoes, cv. Nam Dok Mai, were washed in distilled water and left to dry. Cell suspension of I. orientalis was prepared from 4-day-old PDA culture at concentration of 108 cells/mL. The mangoes were then immersed in the yeast cell suspension for 40 min. For the control treatment, mangoes were immersed in distilled water for the
same period of time. There were three replicates each with twenty fruits arranged in RCBD. Since this study paid attention on postharvest development of anthracnose after quescent infection broke out, there was no artificial inoculation. Hence, the disease that developed on mangoes was caused by natural infections. The mangoes were placed in plastic baskets and covered with newspapers. After fifteen days of incubation at room temperature, lesion development was assessed using the following scores: 0 = no disease; 1 = tiny lesion (pin-headed size) developed, 2-3 lesions per fruit; 2 = 3-4 lesions of 3 to 4–mm diameter size were found and the damaged area was less than 5 % on the fruit; 3 = 5-12% of damaged area found on the fruit; 4 = 13-25% of damaged area found on the fruit; 5 = 26-50% of damaged area found on the fruit; 6 = more than 50% of damaged area found on the fruit.