Distribution, infection and symptomatology of virus-like diseases of cucurbits in the Visayas [Philippines]
1995
Palomar, M.K. | Gapasin, R.M. | Colis, H.S.I.V. (Visayas State Coll. of Agriculture, Baybay, Leyte (Philippines))
Surveys in different localities of Bohol, Cebu, Leyte and Samar [Philippines] revealed that 13 virus-like diseases infect cucurbits, namely: ampalaya [Momordica charantia] and patola [Luffa cylindrica] abnormality (APA), ampalaya leaf curl (ALC), ampalaya little leaf (ALL), ampalaya mosaic (AM), Chayote [Sechium edule] little leaf (CLL), cucumber [Cucumis sativus] mosaic (CM), patola little leaf (PLL), squash [Cucurbita maxima] mosaic (SM), squash leaf curl (SLC), squash yellow mosaic (SYM), upo [Lagenaria leucamtha] mosaic (UM), watermelon [Citrullus lanatus] mosaic (WM), and water melon leaf curl (MLC). The infection of these diseases ranged from 1-100 percent, with no discrete pattern of infection observed. Of these 13 virus-like diseases, ALL, SM, and UM were commonly observed and showed a significantly higher percentage infection in the four provinces; however, CM showed highest average infection of 80 percent in Bohol. Likewise, Leyte was observed to have the most varied kinds of virus-like diseases in cucurbits as compared to Bohol, Cebu, and Samar, in descending orders. Symptoms of the disease varied from yellow and green mosaic, yellowing, chlorotic flecks, vein clearing, mottling to malformation of leaves
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