Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

First report of sugar beet cyst nematode, Heterodera schachtii on beetroot and broccoli in Mexico.

Abstract

In October 2017 and September 2018, two populations of cyst nematodes from Quecholac and Palmar de Bravo, Mexico, were found in beetroot (Beta vulgaris var. conditiva) and broccoli (Brassica oleracea var. italica), respectively. White females and cysts were found attached to both plant roots. In the field, beetroot plants were stunted and chlorotic, whereas there were no above-ground symptoms in broccoli. The nematode was identified as Heterodera schachtii based on morphological characteristics, molecular data (sequence analysis of the internal transcribed spacer (ITS) rRNA and partial mitochondrial COI genes). This is thought to be the first report of H. schachtii parasitizing beetroot and broccoli in Mexico.