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Root-knot nematodes constitute a constraint for important crops, including peanut (Arachis hypogaea L.). Resistance to Meloidogyne arenaria has been identi fied in the peanut wild relative Arachis stenosperma Krapov. & W. C. Greg., in which the induction of feeding sites by the nematode was inhibited by an early hypersensitive response (HR). Here, the transcription expression pro fi les of 19 genes selected fro...
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Wild peanut relatives (Arachis spp.) are genetically diverse and were adapted to a range of environments during the evolution course, constituting an important source of allele diver-sity for resistance to biotic and abiotic stresses. The wild diploid A.stenosperma harbors high levels of resistance to a variety of pathogens, including the root-knot nematode (RKN)Meloidogyne arenaria through the onset of the Hyp...
Seeds of beans (cvs. Carioca and Jalo) and soybeans (cvs. Davis, Doko, Eureka, Cariri, BR-15 and Cristalina) were bombarded with the two cloned components (A and B) of bean golden mosaic virus (BGMV), isolated from Brazil. Beans cultivars Carioca and Jalo, and soybeans cvs. Davis and Cariri developed typical golden mosaic symptons. The presence of the virus was confirmed by squash blot hybridization.; Made avai...
Peanut (Arachis hypogaeaL.) is an important le-gume cultivated mostly in drought-prone areas where its pro-ductivity can be limited by water scarcity. The development of more drought-tolerant varieties is, therefore, a priority for pea-nut breeding programs worldwide. In contrast to cultivated peanut, wild relatives have a broader genetic diversity and constitute a rich source of resistance/tolerance alleles to...