Tolerance of Melon (Cucumis melo L.) Cultivar Melodi Gama 3 to Powdery Mildew Infection

Powdery mildew is one of melon disease caused by ascomycetes fungus from genus Sphaerotheca and Erysiphe. Breeding considered to be the best approach control infection especially in melon. MG3 a cultivar derived ‘MG1’ x ‘Ladika’ its estimate carry out resistant gene inherited MG1. This research find percentage phenotype characters compared four commercial melons (Action 434, Glamour, MAI ladika) that are popular market. Five planted greenhouse B KP4 UGM. After five weeks, plants where inoculated with UGM leaves. Scoring three days after inoculation infections measured every 3 for eight times using grid line 21 cm small cubics 1,5 cm. The analysis level leaves, plant population was done Fukino protocol. results show tolerant stable compare Action ladika level. damage leaves tissue, decreasing abilities photosynthesis resulting necrotic, chlorotic dead infected In fruits, causes break net, immature rotten flesh, decrease sweetness scent Action434, Ladika. Base on microscopic analysis, isolat member Podosphaera.