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Screening rice varieties for resistance to rice yellow mottle virus disease |
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| Authors: | S. N. M. Okioma S. Sarkarung |
| Affiliation: | 1. National Agricultural Laboratories , Ministry of Agriculture , P.O. Box 14733, Nairobi, Kenya;2. National Agricultural Laboratories , Ministry of Agriculture , P.O. Box 14733, Nairobi, Kenya;3. International Institute of Tropical Agriculture (IITA) , PMB 5320, Ibadan, Nigeria |
| Abstract: | Abstract Rice yellow mottle virus (RYMV) is one of the major constraints to rice production in Kenya. The reactions of 30 varieties of rice to an isolate of RYMV were studied. The appearance and development of symptoms in the various varieties were scored on a 0–5 scale. The observed reactions ranged from highly susceptible to highly resistant. Thirty‐six per cent of the varieties showed a high level of resistance while 23.3% were highly susceptible. The intermediate reactions were 16.7% resistant, 6.6% susceptible and 16.7% moderately susceptible. |
| Keywords: | Pinus spp. host‐parasite relationship nematodes population Nigeria |