Department of Olericulture, Kerala Agricultural University, Vellayani, Thiruvananthapuram 695 522
1Professor and Head, Department of Horticulture, Ma-hatma Phule Krishi Vidyapeeth, Rahuri 413 722.
2Indo-American Hybrid Seeds, New Delhi 110 060.
3I.A.R.I., New Delhi 110 012.
Back-inoculation technique was attempted in the wild, semi-dessert and dessert melon collections of symptomless, resistant and susceptible categories of cucumber green mottle mosaic reactions to study the nature of resistance to cucumber green mottle mosaic virus (CGMMV). Inoculated but symptomless plants were treated as ‘source plants’ for preparing sap to inoculate the known susceptible ‘indicator plants’. The study revealed that Cucumis figarei and C. ficifolius were immune whereas ‘Phoot’ (C. melo var. momordica), ‘Kachri’ and FM 1 showed symptomless nature of resistance to CGMMV with an ability to tolerate the infection.
