Morphology of cysts and second stage juveniles of Heterodera filipjevi (Madzhidov, 1981) Stelter, 1984 from Norway

Abstract

Morphological characters and morphometrics of cysts and second stage juveniles of two

Heterodera filipjevi populations from Norway were studied and compared with published data on H. filipjevi. The results of the morphometric analysis extends the range previously reported for cyst characters. The study also provides new information on morphology of the female head, the cyst cuticle, the vulval cone and the lateral field of the second stage juvenile. The complementary data will facilitate the correct identification of H. filipjevi by morphology.