Characterization of cowpea genotype resistance to Callosobruchus maculatus
نویسندگان
چکیده
The objective of this work was to characterize the resistance of 50 cowpea (Vigna unguiculata) genotypes to Callosobruchus maculatus. A completely randomized design with five replicates per treatment (genotype) was used. No‐choice tests were performed using the 50 cowpea genotypes to evaluate the preference for oviposition and the development of the weevil. The genotypes IT85 F‐2687, MN05‐841 B‐49, MNC99‐508‐1, MNC99‐510‐8, TVu 1593, Canapuzinho‐1‐2, and Sanzi Sambili show non‐preference‐type resistance (oviposition and feeding). IT81 D‐1045 Ereto and IT81 D‐1045 Enramador exhibit antibiosis against C. maculatus and descend from resistant genitors, which grants them potential to be used in future crossings to obtain cowpea varieties with higher levels of resistance.
منابع مشابه
Use of micro-CAT scans to understand cowpea seed resistance to Callosobruchus maculatus
The cowpea bruchid, Callosobruchus maculatus (F.) (Coleoptera: Chrysomelidae: Bruchini), is a worldwide pest of stored cowpea grain [ Vigna unguiculata (L.) Walp. (Leguminosae)], causing tens of millions of dollars’ worth of damage annually. One method of managing this pest involves planting cultivars whose seeds are resistant to bruchids. Despite extensive research, we still do not know the me...
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