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꼬마배나무이 (Cacopsylla pyricola) 저항성 배 육종재료 탐색
신일섭 ( Il Sheob Shin ),김동순 ( Dong Soon Kim ),홍성식 ( Seong Sik Hong ),김정희 ( Jeong Hee Kim ),조강희 ( Kang Hee Cho ),김세희 ( Se Hee Kim ),김현란 ( Hyun Ran Kim ),김대현 ( Dae Hyun Kim ),홍세진 ( Se Jin Hong ),황정환 ( Jeo 한국국제농업개발학회 2011 韓國國際農業開發學會誌 Vol.23 No.5
Breeding for pear resistance to pear psylla (Cacopsylla pyricola) is one of important objective of the National Institute of Horticultural and Herbal Science breeding program. One hundred thirty three accessions from 15 Asian, Chinese and European pear species were investigated for their resistance against pear psylla. The pear psylla resistance was determined based on the following four characteristics: overwintering adult population, the number of eggs and nymphs, and the degree of soot. The different pear species showed varied resistance to pear psylla. Pyrus calleryana and P. betulaefolia indicated the highest antixenosis as ovipositional preference and antibiosis as nymphal feeding and were the most resistant genetic resources. Likewise the European pears (P. communis), ``Conference`` and ``Cascade``, exhibited little occurrence and damage by pear psylla. These were proved to be promising genetic materials for breeding resistant cultivars because they had good fruit quality and showed resistance to pear paylla. The observed population of overwintering adult, the number of eggs and nymphs of psylla had significant correlation each other.