Host suitability of soybean and corn genotypes to the root lesion caused by nematode under natural infestation conditions/Hospedabilidade de genotipos de soja e de milho ao nematoide das lesoes radiculares, sob condicoes naturais de infestacao

Among the nematode management strategies, genetic resistance is one of the most appropriate and desirable. However, resistant soybean and corn genotypes resistant to Pratylenchus brachyurus are not available up to the moment. The objective of this study was to evaluate the host suitability of 50 soy...

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Published in:Ciência rural 2016-04, Vol.46 (4), p.580
Main Authors: Rios, Anderli Divina Ferreira, da Rocha, Mara Rubia, Machado, Alan Soares, Avila, Kassia Aparecida Garcia Barbosa, Teixeira, Renato Andrade, Santos, Leonardo de Castro, Rabelo, Lilian Rosana Silva
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Language:English
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Summary:Among the nematode management strategies, genetic resistance is one of the most appropriate and desirable. However, resistant soybean and corn genotypes resistant to Pratylenchus brachyurus are not available up to the moment. The objective of this study was to evaluate the host suitability of 50 soybean and 38 corn genotypes to P. brachyurus under natural infestation. Soybean genotypes BRSGO Chapadoes, BRSGO Paraiso, M-Soy 7211 RR, M-Soy 8008 RR, Emgopa 313 RR, M-Soy 8411, BRSGO Juliana RR, Emgopa 316 RR, BRSGO Luziania RR and TMG 103 RR, and corn genotype Agromem 30A06 reduced the nematode population during the evaluation period. Key words: Glycine max, Zea mays, Pratylenchus brachyurus, resistance. Dentre as estrategias de manejo de nematoides, a utilizacao de resistencia e uma das alternativas mais apropriadas e desejaveis. No entanto, ate o momento, nao se dispoe de genotipos de soja e de milho reconhecidamente resistentes a Pratylenchus brachyurus. O objetivo deste trabalho foi avaliar a reacao de 50 genotipos de soja e 38 de milho a P. brachyurus em areas naturalmente infestadas. Os genotipos de soja BRSGO Chapadoes, BRSGO Paraiso, M-Soy 7211 RR, M-Soy 8008 RR, Emgopa 313 RR, M-Soy 8411, BRSGO Juliana RR, Emgopa 316 RR, BRSGO Luziania RR e TMG 103 RR e o de milho Agromem 30A06 reduziram a populacao do nematoide ao longo do periodo de avaliacao. Palavras-chave: Glycine max, Zea mays, Pratylenchus brachyurus, resistencia.
ISSN:0103-8478
DOI:10.1590/0100-8478cr20150307