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Trends in Applied Sciences Research
  Year: 2011 | Volume: 6 | Issue: 2 | Page No.: 182-189
DOI: 10.17311/tasr.2011.182.189
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Rice yellow mottle virus Infection and Reproductive Losses in Rice (Oryza sativa Linn.)

J.T. Onwughalu, M.E. Abo, J.K. Okoro, A. Onasanya and Y. Sere

The study on Rice yellow mottle virus (RYMV) infection and reproductive losses in rice was carried out under screenhouse condition in Nigeria. Thirty-five rice varieties were evaluated for RYMV resistance. Percent productive tillers, date to 50% flowering and percent spikelets fertility per plant were between 43.2-96.7%, 57.67-112 days and 0-71.8%, respectively. Number of panicles per plant, number of grains per panicle and 1000 grain weight per plant were between 8.33-45.67, 0-77 and 0-27.57 g, respectively. Yield losses of between 17-100% were obtained from all the rice varieties evaluated. Out of the 35 rice varieties studied, only Gigante (18%), Moroberekan (19%) and NERICA-L 42 (32%), have the least yield losses and RYMV resistance characteristics. The three varieties (Gigante, Moroberekan and NERICA-L 42) are known to possess stable resistance characteristic to RYMV disease and will comparatively be suitable for cultivation in areas where RYMV incidence is endemic and on a long term be used by rice breeders as sources for breeding for durable resistance to RYMV disease in Nigeria.
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  •    RYMV Serological Detection in Insect Vector, Distribution and Transmission to Rice Cultivars
  •    Existence of Several Pathotypes among Rice Yellow Mottle Virus (RYMV) Isolates Collected in Niger Republic
  •    Occurrence, Distribution and Characterization of Rice Yellow Mottle Virus Isolates Genus Sobemovirus in Southwest Nigeria
  •    Pathogenicity of Rice Yellow Mottle Virus and the Potential Sources of Resistance against the Disease in Eastern Uganda
  •    Reactions and Resistance Status of Differential Rice Genotypes to Rice Yellow Mottle Virus, Genus Sobemovirus in Cote d`Ivoire
  •    Potential of Insect Vector Screening Method for Development of Durable Resistant Cultivars to Rice yellow mottle virus Disease
  •    New Records of Insect Vectors of Rice Yellow Mottle Virus (RYMV) in Cote d`Ivoire, West Africa
  •    Existence of Two Pathotypes of Rice Yellow mottle virus, Genus Sobemovirus, in Mali
How to cite this article:

J.T. Onwughalu, M.E. Abo, J.K. Okoro, A. Onasanya and Y. Sere, 2011. Rice yellow mottle virus Infection and Reproductive Losses in Rice (Oryza sativa Linn.). Trends in Applied Sciences Research, 6: 182-189.

DOI: 10.17311/tasr.2011.182.189






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