Progênies de Coffea arabica cv. IPR 100 com resistência ao nematóide Meloidogyne incognita raça 1

Abstract

RESUMOObjetivou-se, neste trabalho, identificar progênies de Coffea arabica cv. IPR 100 com resistência ao nematóide Meloidogyne incognita raça 1. O experimento foi conduzido em casa de vegetação (Londrina, PR, Brasil) no delineamento em blocos ao acaso com 3 repetições e parcelas com 15 plantas. Foram avaliadas seis progênies da cultivar IPR 100 e a cultivar Mundo Novo IAC 376-4 foi utilizada como padrão suscetível. Foram inoculados 500 ovos por planta, totalizando 7500 ovos por parcela de 150 cm 2 . Foi avaliado o número de galhas e massas de ovos presentes nas raízes. As seis progênies da cultivar IPR 100 foram mais resistentes ao M. incognita raça 1 do que o padrão suscetível.Termos para indexação: Cultivares, café, melhoramento genético, nematóide das galhas. ABSTRACTThe objective of this study was to identify progenies of Coffea arabica cv. IPR 100 with resistance to nematode Meloidogyne incognita race 1. The experiment was performed in greenhouse (Londrina, PR, Brazil) with an experimental design of randomized blocks with 3 replications and 15 plants per plot. Six progenies of cultivar IPR 100 were evaluated, and Mundo Novo IAC 376-4 cultivar was used as susceptible control. Five hundred eggs per plant were inoculated, totalizing 7500 eggs per plot of 150 cm 2 . The number of galls and egg masses in the roots were evaluated. All progenies of cultivar IPR 100 presented more resistance to M. incognita race 1 than the susceptible control.

IPR 100 - Rustic dwarf Arabica coffee cultivar with resistance to nematodes Meloidogyne paranaensis and M. incognita

“…IPR 100 resistance observed in the present study for both nematodes confirmed previous results, in which 'IPR 100' showed resistance to nematodes M. paranaensis (Sera et al 2007b, Ito et al 2008, Andreazi et al 2015 and to M. incognita races 1 (Kanayama et al 2009) and 2 (Ito et al 2008). Besides, 'IPR 100' presents good agronomic performance in comparison with susceptible controls Catuaí IAC 64 and Mundo Novo IAC 379/19 in areas infested with M. paranaensis in the state of Minas Gerais, Brazil (Salgado et al 2014).…”

Coffea arabica cultivars with resistance to nematode Meloidogyne exigua originated from Costa Rica

“…The resistance of the IPR 100 was also tested in this research. This cultivar was recently reported in Brazil as resistant to M. exigua (Rezende et al, 2017), to M. paranaensis (Ito et al, 2008;Andreazi et al, 2015; and M. incognita races 1 (Kanayama et al, 2009) and 2 (Ito et al, 2008). This simultaneous resistance to several nematodes is of extreme importance, as it is common to find mixtures of Meloidogyne species and races in coffee crops.…”

Occurrence of Meloidogyne javanica in a noni (Morinda citrifolia L.) crop in Espírito Santo state, Brazil

“…In order to manage phytonematodes, the most efficient and economical method is the use of resistant cultivars [20] , because these make it possible to maintain nematode populations below the level that causes economic losses [19] . As RKNs present a high level of host specialization, the most desirable management of Meloidogyne spp.…”