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dc.contributor.authorMurungi, Lucy K
dc.contributor.authorKnapp, Markus
dc.contributor.authorSalifu, Daisy
dc.contributor.authorWesonga, John
dc.contributor.authorNyende, A
dc.contributor.authorMasinde, P
dc.contributor.authorTorto, B
dc.date.accessioned2018-10-22T06:57:01Z
dc.date.accessioned2020-02-07T05:39:42Z
dc.date.available2018-10-22T06:57:01Z
dc.date.available2020-02-07T05:39:42Z
dc.date.issued2011
dc.identifier.urihttp://repository.must.ac.ke/handle/123456789/1147
dc.description.abstractThe tomato red spider mite Tetranychus evansi Baker & Pritchard is a serious pest of solanaceous plants worldwide. Management of this oligophagous pest in African nightshades has been a challenge to smallholder African farmers due to its high reproductive rate and rapid development of resistance to synthetic pesticides. The aim of the present study was to determine the influence of leaf trichomes onT. evansi by comparing its fecundity and movement on the leaf surfaces of five African nightshade species, namely Solanum sarrachoides Sendter, S. villosum Miller, S. tarderemotum Bitter, S. americanum Miller and S. scabrum Miller. Data were recorded in the laboratory at 23 +18 C, 50 – 70% relative humidity and a 12 h light:12 h dark photoperiod for the effect of trichome type and density of the abaxial leaf surface on mite fecundity. Distances travelled by mites on the leaf surface from the edge of a thumbtack pin inserted on the leaf were also recorded. Different trichomes, glandular and non-glandular types, were identified. There was a significant negative correlation of fecundity and distance walked by mites with the density of glandular trichomes. Significantly fewer eggs were laid on S. sarrachoides in comparison with the other Solanum species. The distance walked by mites was also significantly shorter in this species, indicating that higher densities of glandular trichomes interfere with mite movements. These results suggest that African nightshade genotypes differ in their levels of resistance to T. evansi, which is partially associated with differences in trichome types and their densitiesen_US
dc.language.isoenen_US
dc.publisherCambridge University Pressen_US
dc.subjectResistance, Solanum spp, Tetranychus evansi , trichomeen_US
dc.titleDifferential effects of various African nightshade species on the fecundity and movement of Tetranychus evansi (Acari: Tetranychidae)en_US
dc.typeArticleen_US


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