Nematropica (2012) 42, 320-323

Mauro Ferreira Bonfim Junior and Mário Massayuki Inomoto (2012)
Resistance of common bean to Pratylenchus jaehni
Nematropica 42 (2), 320-323
Abstract: A population of Pratylenchus jaehni, named K5 or race coffee, is found in coffee plantations of São Paulo state, Brazil, usually causing extensive damages in plants of Coffea arabica. Taking into account that common bean (Phaseolus vulgaris) cv. Safira is resistant to this population, two experiments were conducted to verify if other eight cultivars of common bean can be used for the management of P. jaehni in coffee plantations. The experiments were carried out in a greenhouse with an initial population of 200 specimens per plot (three plants in a 700 ml plastic pot). Evaluation were performed at 64 and 60 days after inoculation in experiments 1 and 2, respectively, using the variables reproduction factor [RF = final population/initial population] and nematodes/g roots. The nematode did not build up in any of the bean cultivars used in the experiments. The RF ranged from 0.17 (IAPAR 81) to 0.33 (IPR Siriri) in experiment 1 and 0.10 (IPR Juriti) to 0.57 (IPR Siriri) in experiment 2. These results show that the common bean has potential for the management of P. jaehni in coffee plantations, as intercropping or crop rotation.
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Database assignments for author(s): Mauro Ferreira Bonfim Junior, Mário M. Inomoto

Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host
environment - cropping system/rotation

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Pratylenchus jaehni	Coffee (Coffea)	Brazil (south)