Damage quantification and reaction of bean genotypes (Phaseolus vulgaris L.) to Meloidogyne incognita race 3 and M. javanica.

The damage and the resistance levels of cultivars and accessions of common beans rescued in the South and mountain regions of Espírito Santo State, Brazil, to M. incognita race 3 and M. javanica parasitism were evaluated under a greenhouse. Four rescued bean genotypes ("FORT-10", "FORT-13", "FORT-16" and "FORT-19") and 2 commercial cultivars: "Pérola", and "Aporé", were tested. The cultivar "Rico-23" was included as standard of susceptibility to nematodes and non-inoculated plants constituted the control. Thus, the experiment was carried out in a completely randomized design in 3 (treatments considering nematodes) x 7 (genotypes and bean cultivars) factorial arrangement, with 7 replicates. Data were measured at 50 days after plant inoculation. For damage quantification, the following variables were evaluated: plant height (PHE), number of nodes (NNO), number of trifoliate leaves (NRT), fresh matter weight (FWE) and dry matter weight (DWE) of shoots, root weight (RWE), number of root nodules (NRO) and final population (FPO) of nematodes per root system. There were no significant differences between the effects caused by M. incognita and M. javanica, but both species showed inferior values of PHE, NNO, NRT, RWE, FWE and DWE compared to controls. Concerning the levels of resistance of bean plants to M. incognita, the genotypes "FORT-10", "FORT-13", "Aporé" and "FORT-16" behaved as moderately resistant, the cultivars "Rico 23" and "Pérola" low resistant, and the genotype "FORT-19" as highly susceptible. When parasitized by M. javanica, the beans "FORT-19", "Rico-23", "FORT-16" and "FORT-13" were low resistant, "Pérola" and "Aporé" susceptible and "FORT-10" highly susceptible.

Bibliographic Details

Main Authors:	SANTOS, L. N. S. dos, ALVES, F. R., BELAN, L. L., CABRAL, P. D. S., MATTA, F. de P., JESUS JÚNIOR, W. C. de, MORAES, W. B. de
Other Authors:	LEONARDO NAZÁRIO SILVA DOS SANTOS, UNIVERSIDADE FEDERAL DO ESPEIRITO SANTO/ALEGRE; FÁBIO RAMOS ALVES, UNIVERSIDADE FEDERAL DO ESPEIRITO SANTO/ALEGRE; LEÔNIDAS LEONI BELAN, UNIVERSIDADE FEDERAL DO ESPEIRITO SANTO/ALEGRE; PABLO DIEGO SILVA CABRAL, UNIVERSIDADE FEDERAL DO ESPEIRITO SANTO/ALEGRE; FREDERICO DE PINA MATTA, CPPSE; WALDIR CINTRA DE JESUS JUNIOR, UNIVERSIDADE FEDERAL DO ESPEIRITO SANTO/ALEGRE; WILLIAN BUCKER DE MORAES, UNIVERSIDADE FEDERAL DO ESPEIRITO SANTO/ALEGRE.
Format:	Artigo de periódico biblioteca
Language:	Ingles English
Published:	2013-01-14
Subjects:	Growth reduction, Resistance, Bean, Root knot nematode, Redução de crescimento, Feijoeiro, Nematoides das galhas,
Online Access:	http://www.alice.cnptia.embrapa.br/alice/handle/doc/945160 https://doi.org/10.1590/S0100-54052012000100004
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