Age structure of populations of the cyst nematode Heterodera Filipjevi (Heteroderidae: Nematoda) on different wheat and barley varieties

Abstract

Списание Аграрни науки е издание на Аграрния университет -Пловдив. В списанието се публикуват оригинални изследователски статии и обзори от всички области на растениевъдството, растителната защита, екологията, животновъдството, икономиката и туризма на български и на английски език. Agricultural Sciences is a journal of the Agricultural University -Plovdiv. Original research papers and reviews in all the areas of Crop Science, Plant Protection, Ecology, Аnimal Breeding and Husbandry, Economy and Tourism are published in the journal in Bulgarian and in English.Editorial Board Editor-in-Chief -Prof. Ivanka Lecheva, DSc Deputy-Editor-in-Chief -Prof. Diyana Svetleva, DScExecutive Editor -Tania Tsvetkovska th century. Laboratory and field experiments on the seasonal dynamics of the species were conducted. The age structure and the population density of the nematodes were studied during the vegetation period. Delay inthe juvenile development and respectively emergency of white females was observed under both controlled and field conditions in barley for the varieties Aheloy, Veslets, and Obzor and under field conditions only in the Milena wheat variety. MembersThe laboratory tests showed that fodder barley Aheloy was resistant and Veslets and Obzor were moderately susceptible to the nematode. The Mirjana wheat variety demonstrated high susceptibility, whiletherest of the wheat and barley varieties had intermediate position.