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| Pinheiro,Jadir B; Silva,Giovani Olegario da; Biscaia,Danielle; Macedo,Amanda G; Correia,Núbia Maria. |
| ABSTRACT Root-knot nematodes cause great damage to vegetable crops in Brazil, besides having a large range of host plants, such as weeds. Weeds can maintain the inoculums or even favor the multiplication of these nematodes. In this study we evaluated the reaction of selected weed species, present in a vegetable production area, to root-knot nematodes Meloidogyne incognita and M. enterolobii. The trials were conducted in a greenhouse at Embrapa Hortaliças, Brasília-DF, in a completely randomized design with six replicates. Fifteen weed species were evaluated for M. incognita race 1, and 16 weed species were evaluated for M. enterolobii. Two tomato cultivars were evaluated as resistance and susceptibility standards. Gall index (IG), egg mass index (IMO),... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Weed host; Reproduction factor; Dissemination. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362019000400445 |
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| Pinheiro,Jadir B; Silva,Giovani Olegário da; Biscaia,Danielle; Macedo,Amanda G; Suinaga,Fábio A. |
| ABSTRACT Genetic resistance is the most suitable mechanism to control root-knot nematodes in lettuce. However, information about the resistance levels of currently used lettuce cultivars is scarce in the literature. Thus, the objective of this research was to characterize lettuce cultivars for resistance to root-knot nematodes Meloidogyne incognita (Mi) and M. javanica (Mj), aiming the identification of resistance sources for breeding, and to transfer information to the productive sector. We evaluated 97 lettuce genotypes in tree trials. In the first one (preliminary assessment), 92 lettuce genotypes were inoculated simultaneously with M. incognita race 1 and M. javanica species, 17 days after sowing. The gall index (GI) was evaluated 41 days after... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lactuca sativa; M. incognita; M. javanica; Reproduction factor. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362020000300239 |
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| Pinheiro,Jadir B; Silva,Giovani Olegario da; Macêdo,Amanda G; Biscaia,Danielle; Ragassi,Carlos Francisco; Ribeiro,Cláudia SC; Carvalho,Sabrina Isabel C de; Reifschneider,Francisco José B. |
| ABSTRACT Thirty seven pepper genotypes, Capsicum chinense, C. annuum and C. frutescens, were characterized for resistance to three root-knot nematode species (Meloidogyne javanica, M. incognita race 1 and M. enterolobii) aiming to find potential resistance sources to be used in breeding programs. Three experiments were carried out, in 2013, 2014 and 2016, in a greenhouse, in randomized block design and six replicates, one plant/pot. Data were submitted to analysis of variance and average clustering. All evaluated pepper genotypes were resistant or immune to M. javanica. For M. incognita race 1, all accessions of C. frutescens, evaluated in the first experiment, were resistant, whereas the six accessions of C. chinense were susceptible. For M. incognita,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Capsicum spp.; Meloidogyne javanica; M. incognita race 1; M. enterolobii. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362020000100033 |
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