Effects of yellow witchweed (Alectra vogelii) strains on performance of improved cowpea (Vigna unguiculata (L) Walp.) Genotypes

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dc.contributor.authorReuben, F.M.
dc.contributor.authorTryphone, G.M.
dc.contributor.authorKudra, A.B.
dc.date.accessioned2024-05-30T11:56:07Z
dc.date.available2024-05-30T11:56:07Z
dc.date.issued2021-12-31
dc.descriptionResearch article
dc.description.abstractWitchweed (Alectra vogellii) has continuously remained a great challenge for cowpea production in sub-Saharan Africa. Developing resistant and stable high yielding cowpea genotypes in Alectra infested areas requires evaluation of available cowpea germplasm for resistance against the weed. To achieve this, an experiment was conducted in the screen house at Ilonga Agricultural Research Institute (ARI- Iloga), Tanzania in 2017 to determine how selected cowpea genotypes fair in soils infested with different Alectra strains. The experiment comprised of two factors namely A. vogellii strains as the main factors and cowpea genotypes as sub-factors and was carried out as a spilt plot experiment arranged in randomized complete block design with three replications. Results revealed significant differences amongst cowpea genotypes on days to first Alectra emergence and number of emerged Alectra shoots. The cowpea genotypes B 301, Mkanakaufiti, Vuli AR1, Vuli AR2 and Vuli-1 allowed Alectra emergence at 42.83, 37.25, 36.75, 37.42 and 33.17 days after planting (DAP), respectively. There were variations in number of Alectra shoots supported by genotypes, as 1.0, 5.0, 4.0, 5.0 and 14.0 for B301, Mkanakaufiti, Vuli AR1, Vuli AR2 and Vuli-1, respectively. The genotype B 301 recorded the lowest number of Alectra shoots, reached 50% flowering earlier and had the highest seeds and pods weight and highest number of pods per plant. Contrarily, the genotype Vuli-1 produced the highest number of seeds per pod and was the first to reach 95% physiological maturity. The genotype B 301 was identified to possess a high level of resistance to A.vogelii infestation and accordingly was deemed as a useful source of resistance genes in cowpea resistance breeding programs.
dc.identifier.urihttps://www.suaire.sua.ac.tz/handle/123456789/6192
dc.language.isoen
dc.publisherGreener Journal of Agricultural Sciences
dc.relation.ispartofseriesGreener Journal of Agricultural Sciences Vol. 11(4), pp. 277-287, 2021
dc.subjectAlectra vogellii strains
dc.subjectcowpea genotypes
dc.subjectresistance
dc.titleEffects of yellow witchweed (Alectra vogelii) strains on performance of improved cowpea (Vigna unguiculata (L) Walp.) Genotypes
dc.typeArticle

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