Avaliação do desenvolvimento de genótipos de feijoeiros parasitados por meloidogyne incognita

Abstract

SUMMARY: This work had as objective to evaluate the growth of bean plants genotypes parasitized by Meloidogyne incognita under controlled conditions. The experiment was carried out on an entirely randomized design with eight replicates, disposed in a factorial arrangement 3x4, that are: three bean plants genotypes (Perola, Corrego Alto e Amarelinho) and four levels of nematodes inoculum (0, 2.000, 4.000 e 6.000 nematodes.plant -1 ). At the end of the culture cycle the following variables were evaluated: number of trifoliate leaves (NFT), stem diameter (DC), leaf area (AF), number of galls (NG), number of egg masses (NMO) and final nematodes population (PF). The genotype Perola presented higher values of MSF, MSC, MST and DC when compared to Amarelinho. Inversely, the genotype Amarelinho had lower movement when compared with the other cultivars. The number of galls induced by the nematode in the genotype Perola increased as increased the inoculum levels. There was tendency of increase as much of NMO as of the PF as soon as the nematode inoculum levels were increased. The higher values of MSF and MST were observed on the genotype Amarelinho with the increase of the nematode inoculum levels.