Multiple resistance of the cereal cyst nematode (Heterodera latipons) and root lesion nematodes (Pratylenchus thornei and Pratylenchus neglectus) in wheat

Cereal cyst nematodes (CCN) and root lesion nematodes (RLN) are economically important in wheat growing area in the Turkey. Current management strategies are not always practical and economic, so development of alternative control methods would be of significant benefit. The wide distribution and high population numbers had historic adverse impact on wheat production. Most of plant parasitic nematodes are inhabiting together in soil root ecosystem. So, ıt should be investigated the effect of mixed nematode population on different wheat varieties. The objectives of this project were: determine multiple resistance of Heterodera latipons, Pratylenchus thornei and P. neglectus in summer and winter wheat genotypes in vitro and semi-field conditions. It was placed 25 wheat genotypes in pots and semi-field conditions during 2016-2017 in November-June. Each plant was evaluated for the number of eggs/juveniles and cyst, adult nematodes. H. latipons inhibited P.thornei and P. neglectus population density. Yelken-2000 and Yayla-305 genotypes have the lowest population density with nematode numbers of cysts, larvae and mature root lesions. Root lesion nematodes were inhibited cyst nematodes on Gerek-79, Yayla-305, Porsuk 2800, P-8-6, Lütfibey, Tosunbey, Uzunyayla, Silverstar, Seri-82. Future work will focus on reactions different pathotypes of CCN wheat in mix populations