Reaction of Arabica coffee progenies derivative from Icatu to Meloidogyne paranaensis

Luciana Harumi Shigueoka,Fernando Cesar Carducci,Elder Andreazi,Gustavo Hiroshi Sera,Inês Cristina De Batista Fonseca,Tumoru Sera,Dhalton Shiguer Ito,Filipe Gimenez Carvalho

doi:10.1590/1678-4499.229

Luciana Harumi Shigueoka, Fernando Cesar Carducci + Show 6 more

Open Access

https://doi.org/10.1590/1678-4499.229

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Abstract

ABSTRACT The aim of this study was to evaluate the reaction of Arabica coffee progenies derived from Icatu to Meloidogyne paranaensis. The experiment was conducted under screenhouse conditions at Instituto Agronômico do Paraná (IAPAR) in Londrina, Paraná State, Brazil. Seedlings with three to four pairs of leaves were inoculated with 5,000 M. paranaensis eggs and second-stage juveniles (J2). Four F4 progenies of HN 87609 derived from Icatu H4782-7-925 were evaluated. C. arabica cv. Catuaí Vermelho IAC 81 and C. arabica cv. IPR 100 were susceptible and resistant checks, respectively. The experiment was conducted in a randomized blocks design with 14 replications of one plant per plot. Assessments were performed 120 days after inoculation. The number of eggs and second-stage juveniles (J2) per gram of roots (Nematodes∙g–1) and reproduction factor (RF) were evaluated. Host susceptibility index (HSI) was used to classify the resistance levels of coffees. In relation to Nematodes∙g–1, IAPAR 12232 and IAPAR 12231 progenies were not significantly different from the resistant check IPR 100. All F4 progenies of HN 87609 were classified as highly resistant by HSI and presented 100% of plants classified as highly resistant or resistant. Therefore, these progenies are homozygously resistant to Meloidogyne paranaensis.

Highlights

In coffee crops, nematodes are one of the main factors contributing to lower production as they parasitize the roots throughout the crop cycle (Salgado and Rezende 2010)
M. paranaensis is highly aggressive to coffee plants and is a species that limits the implementation of coffee crops in infested areas and the maintenance of those already planted (Gonçalves and Silvarolla 2007)
All progenies from HN 87609 were classified as highly resistant (HR) by Host susceptibility index (HSI), to the resistant check

Summary

Introduction

Nematodes are one of the main factors contributing to lower production as they parasitize the roots throughout the crop cycle (Salgado and Rezende 2010). The most important nematodes for the culture belong to the genus Meloidogyne Goeldi 1887, being found in the major coffee producing regions in Brazil, and cause losses in productivity, which vary with the species, population density and susceptibility of the cultivar (Salgado and Rezende 2010). M. paranaensis is highly aggressive to coffee plants and is a species that limits the implementation of coffee crops in infested areas and the maintenance of those already planted (Gonçalves and Silvarolla 2007). The control of plant-parasitic nematode is difficult to perform and the eradication is practically impossible in infested areas (Gonçalves and Silvarolla 2007). The use of resistant coffee varieties is an effective measure of control of M. paranaensis

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