Antixenosis component of resistance in poplar species and clones (Populus spp.) to the willow and poplar lace-bug, Monosteira unicostata (Mulsant & Rey) (Hemiptera: Tingidae)

[摘要]  During the year 2007, antixenosis resistance mechanism of 4 poplar species, including Populus alba, P. deltoides, P. euramericana and P. nigra, and 15 related clones was evaluated against the willow and poplar lace-bug, Monosteira unicostata, one of the most important pests of these trees. Poplar cuts, bearing 3-5 uniform and similar leaves, of each species were taken. The adult bugs previously developed under natural conditions on one poplar species, P. alba, were collected and released in a designed olfactometer while placing in a germinator (at temperature 24±0.1 ºC, 50 % relative humidity, and a photoperiod of 16L:8D). The experiment was carried out with 10 replications. The numbers of male and female bugs attracted to each poplar clones were counted and recorded after 24 hours. Statistical analysis revealed a significant difference (P

[学科分类] 昆虫学

[关键词] Poplar;clones;Monosteira unicostata;resistance;antixenosis;olfactometer