Tanha Maafi Z. & Heidari R. 2015. Review on incidence of soybean cyst nematode in Iran. Plant Pathology Science 4(2):1-16.
Soybean cyst nematode, Heterodera glycines, is widespread in major soybean producing countries and is considered as the most suppressed agent of soybean yield in the world. This nematode was reported from northern Iran in 1999 for the first time. Presently SCN is widely distributed in Golestan and Mazandaran provinces and infestation rate is a remarkable showing broad range of infestation. In most fields, the population density is above the damage threshold level reported for this nematode in the literatures. The HG Type 0 (race 3) has been defined as the dominant type in the region and Katoul (DPX) is the only resistant cultivar to this type of SCN in Iran. Importance of soybean cyst nematode, distribution and severity of infection, nematode morphology, symptoms, race/Hg Type, life cycle, reaction of Iranian cultivars against the dominant SCN Hg Type in Iran, and its management, based on the researches conducted in Iran and in the world are presented in this paper.
Hadi Karimipour Fard, Zahra Majd Taheri, Zahra Tanha Maafi, Volume 14, Issue 2 ((Spring and Summer) 2025)
Abstract
Cereal cyst nematode is acknowledged globally as a biotic constraint for wheat production in the world. A total of 150 composite soil and root samples were randomly taken from wheat fields of Kohgiluyeh and Boyer-Ahmad province during 2016-2020, along with recording the geographical coordinates of the sampled locations. Species was identified based on morphological and morphometric features and molecular characters. Among 75 soil samples, from rain-fed and irrigated wheat fields of the province, 42 soil samples (56%) contained Heteroderafilipjevi. The percentage of infested of rain-fed and irrigated wheat fields in the province was estimated to be 55 and 57.6 respectively, with 2.6 eggs and J2s/g of soil. The average population of eggs and second-stage juveniles (J2s) in cysts extracted from infested soils collected from wheat fields in the province was estimated as. The minimum population density of H. filipjevi (0.5 eggs and J2s/g of soil) was found in wheat fields of villages Tol Khosrow in Boyer-Ahmad county. The rain-fed wheat field (Dehdasht cultivar) of Lirab village in Basht county with 13.7 eggs and J2s/g of soil, has the highest mean population density of H. filipjevi. The average population of eggs and J2s in both rain-fed and irrigated wheat fields infested with the H. filipjevi in all counties of the province were estimated to be 2.6 and 2.51/g soil, respectively. In total rain-fed and irrigated wheat fields, the highest and lowest mean populations of eggs and J2s of H. filipjevi were 4.9 and 1.18, respectively, in Basht and Gachsaran counties.
