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Analysis of tea plant resistance to tea green leafhopper, E mpoasca onukii , by detecting stylet‐probing behavior with DC electropenetrography
Author(s) -
Yorozuya Hiroshi
Publication year - 2017
Publication title -
entomologia experimentalis et applicata
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.765
H-Index - 83
eISSN - 1570-7458
pISSN - 0013-8703
DOI - 10.1111/eea.12621
Subject(s) - honeydew , leafhopper , biology , ingestion , pest analysis , camellia sinensis , horticulture , botany , feeding behavior , food science , hemiptera , zoology , biochemistry
The tea green leafhopper, E mpoasca onukii M atsuda ( H emiptera: C icadellidae: T yphlocybinae), is a serious pest of tea plants in East Asia. Previous work has shown that two tea germplasms, Cd19 and Cd289, sustain less hopperburn damage by E . onukii than does C amellia sinensis (L.) O. Kuntze cv. ‘Yabukita’ (Theaceae), and E . onukii excretes less honeydew on these germplasms than on the susceptible Y abukita. This study investigated the feeding behavior of E . onukii with a direct current electropenetrograph ( DC EPG ) to compare feeding behaviors, including ingestion, on resistant tea germplasms and Y abukita. Feeding behaviors on the resistant germplasms were significantly restricted, with few bouts of active ingestion of short duration and long periods of non‐probing, whereas E . onukii engaged in active ingestion of long duration many times on the susceptible cv. Y abukita. The tea germplasms, Cd19 and Cd289, therefore showed strong resistance to E . onukii . Furthermore, the shape of puncture holes left after probing was compared between the susceptible Y abukita and the resistant germplasms. The puncture holes on Cd19 and Cd289 were indistinct in shape and closed compared with those on Y abukita.