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Efeitos de Solanum sisymbriifolium e S. nigrum sobre o nemátode-das-lesões-radiculares, Pratylenchus goodeyi, parasita da bananeira
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Advisor(s)
Abstract(s)
O objectivo deste trabalho foi desenvolver
uma estratégia de luta contra o nemátode das-lesões-radiculares, Pratylenchus goo deyi, utilizando Solanum sisymbriifolium e
S. nigrum como adubo verde ou biofumi gante. Inicialmente, foram realizados ensaios
de patogenicidade, tendo-se verificado que
apesar de P. goodeyi se ter reproduzido nas
duas plantas, os factores de reprodução fo ram muito baixos (0,001), podendo ser con sideradas como resistentes ou, pelo menos,
hospedeiros fracos. A incorporação de qual quer uma das espécies de Solanum no solo,
com bananeiras infectadas com P. goodeyi,
influenciou o crescimento das bananeiras e a
reprodução de P. goodeyi foi superior nas ba naneiras apenas infectadas com o nemátode.
Os extractos aquosos de S. sisymbriifolium
foram os mais eficazes na mortalidade de P.
goodeyi na concentração de 250 mg/ml. De
acordo com os resultados obtidos, pode-se
concluir que as plantas de S. sisymbriifolium
e S. nigrum poderão ser utilizadas como adu bo verde e como biofumigante.
The main goal of the present research was to help to devise a more sustainable banana production system by developing a control strategy for the root-lesion nematode, Praty lenchus goodeyi using Solanum sisymbriifo lium Lam. and S. nigrum L. as green manure or biofumigants. Initially, a pathogenicity as say was performed and it has been demons trated that, although P. goodeyi did reprodu ce on both plants, the reproduction factors (0.001) were sufficiently low to designate these plants as resistant or poor hosts. The addition of both Solanum species influenced banana plant growth. The reproduction of P. goodeyi was greatest on banana plants to which no Solanum species plant parts were added. S. sisymbriifolium water extracts were the most effective on P. goodeyi, mainly at the higher concentration (250 mg/ml). From the results obtained, S. sisymbriifolium and S. nigrum could be used as green manure and as biofumigants.
The main goal of the present research was to help to devise a more sustainable banana production system by developing a control strategy for the root-lesion nematode, Praty lenchus goodeyi using Solanum sisymbriifo lium Lam. and S. nigrum L. as green manure or biofumigants. Initially, a pathogenicity as say was performed and it has been demons trated that, although P. goodeyi did reprodu ce on both plants, the reproduction factors (0.001) were sufficiently low to designate these plants as resistant or poor hosts. The addition of both Solanum species influenced banana plant growth. The reproduction of P. goodeyi was greatest on banana plants to which no Solanum species plant parts were added. S. sisymbriifolium water extracts were the most effective on P. goodeyi, mainly at the higher concentration (250 mg/ml). From the results obtained, S. sisymbriifolium and S. nigrum could be used as green manure and as biofumigants.
Description
Keywords
Adubo verde Bananeira Biofumigação Nemátode-das-lesões-radiculares Solanum Green manure Banana Biofumigation Root-lesion nematode Solanum . Faculdade de Ciências da Vida
Citation
Pestana, M., Gouveia, M., & Abrantes, I. (2009). Efeitos de Solanum sisymbriifolium e S. nigrum sobre o nemátode-das-lesões-radiculares, Pratylenchus goodeyi, parasita da bananeira. Revista de Ciências Agrárias, 32(2), 173-181.
Publisher
Sociedade de Ciências Agrárias de Portugal