The host status of eighteen progenies (CRP 01-12 to CRP 16-12, CRP 19-12 and CRP 20-12) and two cultivars (FB 200 Yellow Master and FB 300 Araguari) of yellow passion fruit to Meloidogyne incognita race 2 was evaluated in a greenhouse experiment. The height and the biomass of the plants, besides the numbers of galls, eggs and second-stage juveniles in roots and soil were assessed after 70 days of cultivation of the genotypes and tomato (control) in plastic pots with 2 kg of soil infested with 5,000 eggs of the nematode. The reproduction factor of the pathogen (RF = Final population/Initial population) was calculated for classifying the genotypes as immune (RF = 0), resistant (RF < 1) or susceptible (RF = 1). The cultivar FB 200 is resistant to M. incognita race 2 and can be cultivated in areas infested with this nematode.
机构:
Univ Sao Paulo, Dept Plant Pathol & Nematol, Escola Super Agr Luiz de Queiroz, Plant Pathol, Piracicaba, BrazilUniv Sao Paulo, Dept Plant Pathol & Nematol, Escola Super Agr Luiz de Queiroz, Plant Pathol, Piracicaba, Brazil
Goncalves Barros Silva, Aline Mayara
Inomoto, Mario Massayuki
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机构:
Univ Sao Paulo, Dept Plant Pathol & Nematol, Escola Super Agr Luiz de Queiroz, Piracicaba, BrazilUniv Sao Paulo, Dept Plant Pathol & Nematol, Escola Super Agr Luiz de Queiroz, Plant Pathol, Piracicaba, Brazil