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First report of the cereal cyst nematode (Helerodera filipjevi)-on wheat in Algeria
(Amer Phytopathological Soc, 2018) Smaha, Djamel; Mokrini, Fouad; İmren, Mustafa; Mokabli, Assia; Dababat, Abdelfattah
Cereal cyst nematodes (CCNs) are an important group of sedentary plant-parasitic nematodes that restrict production of cereal crops throughout the world (Smiley et al. 2017). Heterodera filipjevi is considered one of the most destructive Heterodera species and causes significant damage in global wheat production (Dababat et al. 2015). In April 2016, two populations of cyst nematode were collected from Lamtar (35°4′4″ N; 0°47′53″ W) and Telagh (34°47′6″ N; 0°34′23″ W) wheat (Triticum durum) fields of Sidi Bel Abbes province in Algeria. The wheat fields had stunted patches, poor plant growth, chlorotic lower leaves, and few or no tillers. Cyst extraction from soils taken from the Lamtar and Telagh fields resulted in 9 and 11 cysts per 100 cm3 of soil, respectively. The cysts were extracted from soil using a Fenwick can technique (Fenwick 1940) and identified by morphology and morphometric analysis as well as by internal transcribed spacer (ITS)-rDNA sequencing. Morphologically, the cysts were lemon shaped with a posterior protuberance. The vulval cone was bifenestrate with horseshoe-shaped semifenestra and had strongly developed bullae and an underbridge.