In vitro and in vivo control of yam dry rot nematodes using pyroligneous extracts from palm trees
| Autor: | A. V. D. L. Almeida, João Inácio Soletti, Sara Padilha de Farias, Everton Sebastião do Nascimento, Maria de Fátima Silva Muniz, Gilson Moura Filho, Tatiane Luciano Balliano |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Syagrus cearensis
Dioscorea spp General Veterinary biology Agriculture (General) Sowing Arecaceae alternative control Pratylenchus sp biology.organism_classification S1-972 Horticulture Cocos nucifera meteorology.tropical_cyclone Scutellonema bradys meteorology Dioscorea Dry rot Pratylenchus General Agricultural and Biological Sciences TP248.13-248.65 Biotechnology |
| Zdroj: | Revista Ceres, Vol 67, Iss 6, Pp 482-490 (2020) Revista Ceres v.67 n.6 2020 Revista Ceres Universidade Federal de Viçosa (UFV) instacron:UFV |
| ISSN: | 2177-3491 |
| Popis: | Dry rot of yam (Dioscorea spp.) caused by Scutellonema bradys and Pratylenchus spp. has restricted yam production in Brazil. Plant-based products can be useful reducing nematode damages. The objectives of this study were to evaluate the nematostatic and nematicidal in vitro activities of pyroligneous extracts from Cocos nucifera, Syagrus cearensis, S. coronata, and Wodetia bifurcata palms against S. bradys and to evaluate the effect of C. nucifera pyroligneous extract in the treatment of yam tubers infected by S. bradys and Pratylenchus sp. under greenhouse conditions. The pyroligneous extracts obtained at pyrolysis temperatures of 400, 500, 600, and 700 oC, and at different concentrations, were tested for nematode immobility and mortality in Kline slides. Cocos nucifera pyroligneous extract obtained at 400 °C and 1% concentration was tested on yam tubers, under different immersion periods. Six months after yam planting the nematode populations were evaluated. All pyroligneous extracts inhibited the mobility and caused mortality to S. bradys, however 100% inhibition of both variables was achieved at concentrations varying from 0.75 to 2%, depending on the pyrolysis temperatures. The reproduction factor was reduced in 43% by treating infected yam tubers with pyroligneous extract from C. nucifera. |
| Databáze: | OpenAIRE |
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