MORPHOLOGICAL AND MORPHOMETRIC CHARACTERIZATION OF PRATYLENCHUS SPECIES IN SUGARCANE CROPPING AREAS OF PERNAMBUCO STATE

Authors

  • Alniusa Maria de Jesus Department of Research, Empresa de Pesquisa agropecuária de Minas Gerais, Nova Porteirinha, MG https://orcid.org/0000-0003-0390-1536
  • Elvira Maria Regis Pedrosa Department of Agricultural Engineering, Universidade Federal Rural de Pernambuco, Recife, PE https://orcid.org/0000-0002-0755-8352
  • João Batista Ribeiro da silva Reis Department of Research, Empresa de Pesquisa agropecuária de Minas Gerais, Nova Porteirinha, MG https://orcid.org/0000-0001-5677-605X
  • Andrea Chaves Fiuza Porto Sugarcane Experimental Station of Carpina, Universidade Federal Rural de Pernambuco, Carpina, PE https://orcid.org/0000-0002-4515-9627

DOI:

https://doi.org/10.1590/1983-21252020v33n303rc

Keywords:

Lesion nematode. Saccharum. Morphological and morphometric variation.

Abstract

The root-lesion nematodes Pratylenchus spp. have a wide geographic distribution and a large number of host plants. These migratory endoparasites are found associated with sugarcane around the world causing diseases that induce permanent losses in productivity. Although this genus has ordinarily been reported in low-producing sugarcane areas in northeastern Brazil, studies of the species occurrence are few and restricted to a very low number of sites and samples. This study aimed to morphologically and morphometrically characterize Pratylenchus species from different sugarcane regions of Pernambuco state, where composite samples of soil and roots were collected on 30 farms from three sugarcane mills. The external morphological characters of the nematode body from different populations had a diagnostic value compatible with those obtained in the literature, showing the dominance of P. zeae (87%) in the region. Atypical populations of the genus Pratylenchus were also found.

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Published

30-07-2020

Issue

Section

Agronomy