Yield loss assessment and evaluation of resistance of banana cultivars to the nematodes Radopholus similis Thorme and Meloidogyne incognita Chitwood
Different banana cultivars were evaluated for resistance to Radopholus similis Thorme and Meloidogyne incognita Chitwood. The 25 cultivars resistant to R. similis were cvs. Amas, Galamay Señora, Kachila, Lakatan, Maneng, Pamotion, Tanggung, Katali, Kinawayan, Tiparot, Benindito, Binaliw, Bunga, Cardaba, Mundo, Pulutan, Siosok, Turangkog, Velutina, Baokas, Katali, Limnok Manis, Ornate, Saba Puti and Penipita. The nine cultivars resistant to M. incognita were cvs. Alaswe, Dakdakan, Inambak, Pastilan, Pugpogon, Miamauli, Paa Dalaga, Sinker and Viente Cohol. All these cultivars showed only trace infection of the nematodes. Majority of the cultivars screened were either susceptible or have intermediate reaction to the nematode infection. The population dynamics study revealed that the commercial banana cultivar, Giant Cavendish, was seriously damaged by R. similis and M. incognita especially at high population density resulting in more than 50 percent yield reduction. Both nematode species exhibited high degree of population fluctuation in soils and roots of banana cv. Giant Cavendish throughout the year. During the dry season (January-May) the population density was usually lower than that in the rainy season (June-December). These findings may serve as a guide in determining when a nematicide or other control measures can be applied effectively
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| Format: | biblioteca |
| Published: |
1985
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| Subjects: | FRUTALES, BANANO, RADOPHOLUS SIMILIS, MELOIDOGYNE INCOGNITA, RESISTENCIA A LAS PLAGAS, NEMATODOS DE LAS PLANTAS, PERDIDAS, RENDIMIENTO, |
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