Influence of Cassava Morphological Traits and Environmental Conditions on Field Populations of Bemisia tabaci

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dc.contributor.authorKatono, Kasifa
dc.contributor.authorMacfadyen, Sarina
dc.contributor.authorOmongo, Christopher Abu
dc.contributor.authorLapaka Odong, Thomas
dc.contributor.authorColvin, John
dc.contributor.authorKarungi, Jeninah
dc.contributor.authorOtim, Michael Hilary
dc.date.accessioned2022-08-22T21:49:28Z
dc.date.available2022-08-22T21:49:28Z
dc.date.issued2021
dc.description.abstractHigh populations of species in the whitefly complex Bemisia tabaci Gennadius (Hemiptera: Aleyrodidae) were reported to cause severe damage to cassava in East and Central Africa. However, reasons for B. tabaci population increases are not well understood. We investigated the effect of cassava morphological traits, temperature, rainfall and relative humidity (RH) on the abundance of B. tabaci. Five cassava genotypes with varying levels of resistance to cassava mosaic disease, cassava brown streak disease, and B. tabaci infestation were planted in three Ugandan agro-ecological zones. The experiment was conducted in 2016 and 2017 in a randomized complete block design. Across all locations, the tallest genotype Alado alado supported the lowest number of B. tabaci adults. In areas with high B. tabaci prevalence, leaf area, leaf lobe width, and leaf lobe number exhibited significant positive effects (p < 0.001) on B. tabaci adult count. Positive effects of relative humidity and negative effects of temperature and rainfall on B. tabaci adult and nymph counts were observed in 2016 and 2017, resulting in low populations in Lira. Evidently, temperatures of 28–30 C, rainfall of 30–150 mm and RH of 55–70%, and deployment of cassava genotypes of low plant height, large leaf area, and lobe width significantly enhanced B. tabaci population growth.en_US
dc.identifier.citationKatono, K.; Macfadyen, S.; Omongo, C.A.; Odong, T.L.; Colvin, J.; Karungi, J.; Otim, M.H. Influence of Cassava Morphological Traits and Environmental Conditions on Field Populations of Bemisia tabaci. Insects 2021, 12, 604. https://doi.org/ 10.3390/insects12070604en_US
dc.identifier.urihttps://doi.org/ 10.3390/insects12070604
dc.identifier.urihttps://nru.uncst.go.ug/handle/123456789/4385
dc.language.isoenen_US
dc.publisherInsectsen_US
dc.subjectWhiteflyen_US
dc.subjectCassava genotypeen_US
dc.subjectPlant morphological characteristicsen_US
dc.subjectPopulation dynamicsen_US
dc.subjectClimatic conditionsen_US
dc.titleInfluence of Cassava Morphological Traits and Environmental Conditions on Field Populations of Bemisia tabacien_US
dc.typeArticleen_US
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