Host status of progenies of yellow passion fruit to Meloidogyne incognita race 2
Nascimento, Roxana Stefane Mendes, Lopes, Everaldo Antônio, Santos, Carlos Eduardo Magalhães dos, Magalhães, Viviane Manuela Bernardes Silva, Cardoso, José Avelino
Crop Breed. Appl. Biotechnol.
DATA DE PUBLICAÇÃO
Abstract 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.
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