Resistência a nematóide das galhas Meloidogyne incognita em variedades de pimentas

Abstract

The peppers and bell peppers are vegetables of the genus Capsicum spp., their cultivation are extremely present in family agriculture. The productions of these species are arduous due to vulnerability to pests and diseases, among which we can highlight the root-knot phytonematodes. Therefore, the objective of the present study was the identification of pepper varieties that are resistant and/or tolerant to nematode Meloidogyne incognita. The experiment was conducted using a completely randomized experimental design, with seven treatments and four replicates. The treatments consisted of seven different pepper varieties, commonly known in Brazil as Peper Malagueta ‘Capsicum frutescens’, Peper Cambuci ‘Capsicum baccatum var. pendulum’, Peper Dedo de Moça ‘Capsicum baccatum’, Peper Tupã Bode Vermelha ‘Capsicum chinense’, Peper Malaquetinha ‘Capsicum frutescens’ e Peper Cumari ‘Capsicum baccatum var. praetermissum’. The tests to obtain resistant pepper varieties were carried out by means of the quantification of root-knot indexes, egg masses and reproduction factor, through the quantification of the final egg population of each plant. After data collection, the data were submitted to analysis of variance, followed by the Scott Knott averages test at 5% of probability used by the SISVAR program. The characteristics evaluated were correlated, by GENES statistical program. From the results obtained by the genotypes, for the several characteristics evaluated, it was verified that two varieties of pepper, Malagueta and Bode Vermelha, were resistant to Meloidogyne incógnita. Considering that, these two varieties are promising for planting areas contaminated by nematode of the species and also could be applied to genetic improvement programs of peppers.