Estimation of Genetic Variability in Maize Genotypes under Infestation by the Maize Storage Weevil, Sitophilus zeamais Using Multivariate Analysis
O. A. Oyetunde, G. A. S. Benson, B. T. Osho, A. K. Oyetunde, G. A. Adeshina
International Journal of Plant & Soil Science · pp. 241–250 · Published 4 Mar 2024
10.9734/ijpss/2024/v36i44474Abstract
The maize weevil, Sitophilus zeamais, is an important field-to-store pest of maize; accounting for huge grain losses globally. Information on genetic variability and trait relationship is crucial to developing farmer-friendly approaches to mitigating the menace of the insect in sub-Saharan Africa. Sitophilus zeamais. Twenty-one maize genotypes were infested to investigate genetic variability for reaction to S. zeamais and the relationship of nutritional quality with insect attack. F1 generation insects were introduced into test tubes containing 100 g of whole grains per genotype. Completely Randomized Design was used replicated twice. Nutritional components, seed weight (g), and data from feeding activity were subjected to principal component, cluster, and genotype × trait (GT) biplot analyses. The highest genetic distance (GD) was between NG/SA/07/122 and each of EVDT-Y2008 STR and the local check. Four clusters were obtained. The GT biplot revealed positive association of grain quality with tolerance traits, and genotypes EVDT-Y2008-STR, IFE-TZEE-WSTR, NA/SA/07/018, NG/SA/07/022, NG/SA/07/140, NG/SA/07/184, TZM 212, and TZB-SR B. Maize reaction to S. zeamais can be influenced through biofortification using the mentioned genotypes. Further research should focus on determining possible jettisoning of quality to improve resistance to S. zeamais.
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Cited by 2
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