꼬마배나무이 (Cacopsylla pyricola)에 저항성 품종육성을 위한 육종재료를 선발코자 월동형 성충수, 단과지내의 산란수, 과총엽내의약충수 및 수관 전체적인 그을음 발생정도를 15개 종 및 종간잡종133개 유전자원을 대상으로 조사하였다. 월동형 성충수는 Pyrus.calleryana 4.6마리, 단과지내 산란수는 P. calleryana 0.3개, 과총엽내약충수는 P. calleryana 0마리, 그리고 그을음 발생정도는 P.betulaefolia, P. calleryana, P. communis, P. hybrid (P.pyrifolia × P.communis), P. lindleyi 0으로 발생 및 피해정도가 가장 낮았으며 종간의 차이가 뚜렷하였다. 전체적으로 대목으로 이용하고 있는 콩배인P. calleryana와 P. betulaefolia가 조사 대상 유전자원 중 가장 높은 항객성(antixenosis)을 보였으나 품질개량에 많은 기간이 요구됨에 따라 실용적으로는 서양배(P. communis) 중 ‘Conference', 'Cascade','Bosc', 'Winter Nelis' 가 가장 낮은 발생 및 피해정도를 보여 꼬마배나무이 저항성 품종 육성을 위한 좋은 육종재료로 판단되었다.

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.

• Il Sheob Shin(Fruit Research Division, National Institute of Horticultural & Herbal Science) | 신일섭 Corresponding author
• Dong Soon Kim(College of Applied Life Science, Jeju National University) | 김동순
• Seong Sik Hong(Planning and Coordination Division, National Institute of Horticultural & Herbal Science) | 홍성식
• Jeong Hee Kim(Technology Services Divison, National Institute of Horticultural & Herbal Science) | 김정희
• Kang Hee Cho(Fruit Research Division, National Institute of Horticultural & Herbal Science) | 조강희
• Se Hee Kim(Fruit Research Division, National Institute of Horticultural & Herbal Science) | 김세희
• Hyun Ran Kim(Fruit Research Division, National Institute of Horticultural & Herbal Science) | 김현란
• Dae Hyun Kim(Administrative Management & Legal Affairs Officer, Director General for Planning & Coordination, Rural Development Administration) | 김대현
• Se Jin Hong(Department of Applied Plant Science, Colleage of Life Science, Gangneung-Wonju National University) | 홍세진
• Jeong Hwan Hwang(RDA Relocation Team, Director General for Planning & Coordination, Rural Development Administration) | 황정환
• Hae Sung Hwang(Fruit Research Division, National Institute of Horticultural & Herbal Science) | 황해성