Скрининг на ечемичени сортове за устойчивост към Sitobion avenae (F.) и Rhopalosiphum padi (L.)
Василина Манева • Дарина Димова • Дина Атанасова
Институт по земеделие - Карнобат, Карнобат, България
Резюме
The experience was conducted in the laboratory of entomology of the Institute
of Agriculture - Karnobat, under controlled conditions. The resistance of two-row
and multiple-barley varieties to two species of aphids - Sitobion avenae (F.) and
Rhopalosiphum padi (L.) for the purposes of selection was studied. In the barley
varieties investigated, the species Rhopalosiphum padi (L.) develops better and
at a higher density than Sitobion avenae (F). Rhopalosiphum padi (L.) prefers to
a greater extent the multi- row than the two-row varieties. In multi- row varieties
there is a clearer differentiation in the preferences of the enemy. In these, the
numerical variation has a greater amplitude than 3 in the FINNE variety to 191
in the BODE variety. The species Rhopalosiphum padi (L.) does not attack the
multi- row varieties FINNE and HERSE, and the two-row species - LYSIMAX and
JACINTA. The species Sitobion avenae F. does not attack the multi- row varieties
FINNE, FLOYA, JADAR, NORDLYS and HERSE, and the two- row ALEXIS and
GRIT. Of the ten varieties of multi- row barley, the HERSE and FINNE varieties
are at least attacked by aphids, respectively 3 and 9 number / stem. Of the ten varieties of two-row barley, the varieties JACINTA, LYSIMAX and GUNHILD are
at least attacked by aphids, respectively - 10, 12 and 19 number / stalk.
Key words: Barley, Rhopalosiphum padi (Linnaeus, 1758), Sitobion avenae
(Fabricius, 1775), Species and variety preference
