Data/hora: 24/06/2024 13:04:49

Biblioteca(s): | Embrapa Soja.
Data corrente: | 04/11/2016
Data da última atualização: | 03/03/2017
Autoria: | DIAS, W. P.; MORAES, L. A. C.; CARVALHO, C. G. P.; OLIVEIRA, M. C. N. de; LEITE, R. M. V. B. de C.; ORSINI, I. P.
Afiliação: | WALDIR PEREIRA DIAS, CNPSO; LARISSA ALEXANDRA CARDOSO MORAES, CNPSO; CLAUDIO GUILHERME PORTELA CARVALHO, CNPSO; MARIA CRISTINA NEVES DE OLIVEIRA, CNPSO; REGINA MARIA VILLAS BOAS DE C LEITE, CNPSO; IDENIZE PEDRINA ORSINI, UEL.
Título: | Resistance to Meloidogyne incognita, Meloidogyne javanica and Pratylenchus brachyurus in sunflower cultivars adapted to the tropical region of Brazil.
Ano de publicação: | 2016
Fonte/Imprenta: | Tropical Plant Pathology, Brasília, DF, v. 41, p. 325-330, 2016.
ISSN: | 1983-2052
DOI: | 10.1007/s40858-016-0102-8
Idioma: | Inglês
Conteúdo: | The continuous soybean-maize crop succession in the tropical region of Brazil has led to significant increases in the population size of root-knot (Meloidogyne incognita and M. javanica ) and root-lesion nematodes (Pratylenchus brachyurus), which make soils unsuitable for soybean cropping. A greenhouse study was conducted to identify sunflower genotypes adapted to the tropical region of Brazil and that are resistant to M. incognita, M. javanica and/or P. brachyurus . Two experiments for each nematode were conducted in a completely randomized design with six replicates. Gall index was calculated from visual scores (0?5) of gall intensity on roots for the root-knot nematode. Initial and final population density and reproduction factor were also measured for each nematode. Sunflower genotypes varied in resistance to the nematodes. Sunflower hybrids BRS 321 and BRS 323 were resistant to M. javanica and P. brachyurus and exhibited low gall index for M. incognita . The cultivars are good alternatives to using in the succession of soybean in nematode-infested areas of the tropical regions of Brazil. No sunflower genotype was identified as resistant to M. incognita and thus sunflower cropping is not indicated in areas infested with this nematode.
Thesagro: | Girassol; Helianthus Annuus; Meloidogyne Incognita; Meloidogyne Javanica; Nematóide; Pratylenchus Brachyurus; Variedade resistente.
Thesaurus Nal: | Nematoda; Varietal resistance.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/149602/1/art3A10.10072Fs40858-016-0102-8.pdf
Registro original: | Embrapa Soja (CNPSO)
Exemplares: | CNPSO - (36979-1) - UPC - AP - DD -  -  -  - DIS