Leaf aphids (Homoptera: Aphididae) in wild grains of genus Aegilops and genus Triticum

Vasilina Maneva, Violeta Bozhanova

Abstract: The study was conducted at the Institute of Field Cultures - Chirpan in 2015. A vascular experience has been established with 13 species of wild cereal from the genus Aegilops and 11 of the genus Triticum. All plants are placed under equal conditions for infection with aphids. At the caging stage, 10 stalks of each species were investigated to determine the numbers and species composition of the aphids. In the case of wild cereal plants of the genus Aegilops, an attack of aphids in three species of Aegilops crassa, Aegilops triuncialis and Aegilops tauschil has been reported, with the first two species being reported for single number and the third one by an average of 5 number per stalk. In genus Triticum, aphids attack was found in seven species, with the highest density reaching Triticum dimonocum - an average of 18 number per stem. The most common species of aphid in both cereal varieties is Sitobion avenae F. The plants of the genus Aegilops are more non-invasive for the aphids and could be used in the selection for resistance.

Keywords: leaf aphids; resistance; wild cereals

Date published: 2020-03-12