Host status of progenies of yellow passion fruit to Meloidogyne incognita race 2

AUTOR(ES)

Nascimento, Roxana Stefane Mendes, Lopes, Everaldo Antônio, Santos, Carlos Eduardo Magalhães dos, Magalhães, Viviane Manuela Bernardes Silva, Cardoso, José Avelino

FONTE

Crop Breed. Appl. Biotechnol.

DATA DE PUBLICAÇÃO

2016-06

RESUMO

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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