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Selection of Crabapple Pollinizers for 'Fuji' Apple through Physiological and Genetic Analysis

꽃사과 품종의 생리 및 유전적 분석을 통한 '후지' 사과의 수분수 선발

  • Son, KwangMin (Dept. of Horticultural Science, Kyungpook National Univ.) ;
  • Choi, Dong Geun (Department of Horticulture Science, Chonbuk National University) ;
  • Kwon, Soon-Il (Apple Research Station, National Institute of Horticultural & Herbal Science, Rural Development Administration) ;
  • Kim, Byung Oh (Dept. of Applied Biology, Kyungpook National Univ.) ;
  • Choi, Cheol (Dept. of Horticultural Science, Kyungpook National Univ.) ;
  • Kang, In-Kyu (Dept. of Horticultural Science, Kyungpook National Univ.)
  • 손광민 (경북대학교 원예과학과) ;
  • 최동근 (전북대학교 원예학과) ;
  • 권순일 (국립원예특작과학원 사과시험장) ;
  • 김병오 (경북대학교 생물응용전공) ;
  • 최철 (경북대학교 원예과학과) ;
  • 강인규 (경북대학교 원예과학과)
  • Received : 2013.04.11
  • Accepted : 2013.05.22
  • Published : 2013.06.30

Abstract

We investigated characteristics and self-incompatibility genotypes of 11 crabapple cultivars to introduce a new pollinizer of 'Fuji' apple tree in Korea. Flowering dates of eleven crabapples were two to seven days earlier than that of 'Fuji'. The rate of pollen germination in vitro was ranged from 85.6% to 98.0% except 'Virginia'. Controlled pollination treatment with each crabapples to 'Fuji' increased fruit set rate about 20.4% to 34.4%, the number of seed per fruit about 13.8% to 42.3% and fruit weight about 7.4% to 16.7% compared to open pollination. Tested crabapples were resistant to peach fruit moth, brown leaf spot and sooty blotch in general. A PCR amplification method using S-RNase primers was carry out in eleven crabapples. S-alleles, $S_3$, $S_5$, $S_9$, $S_{10}$, $S_{20}$, $S_{26} from six crabapples were determinated. Through sequencing analysis, $S_5$ ('Manchurian', 'Virginia') and $S_9$ ('Yantaishagou') showed 100% homologous to previous result. Based on our results, it was recommended that 'Manchurian', 'Hopa A', 'Hanyaehanakaidou', 'Spectabilis' could be promising pollinzers for 'Fuji' apple cultivar.

본 연구는 '후지' 품종에 대한 수분수로서 이용가능성을 확인하기 위하여 꽃사과 11품종의 특성 및 자가불화합성 유전자형을 분석하였다. 꽃사과 품종의 개화기는 '후지'에 비하여 개화시기가 2~7일 정도 빨랐고 화분발아율도 'Virginia'(74.4%) 외에 다른 꽃사과 품종들은 85.6~98.0%로 높은 결과를 보였다. '후지' 품종에 꽃사과 화분을 인공수분시킨 결과 착과율이 자연방임의 65.4%에 비해 'Adam's'는 76.8%로 11.4% 높았고, 나머지 품종들은 86~100%로 20.4~34.4% 높은 결과를 보였다. 꽃사과 화분으로 결실된 '후지' 품종의 종자수는 자연방임으로 결실된 과실에 비하여 13.8~42.3% 향상되었고, 과중은 346.7~376.8g으로 7.4~16.7% 정도 향상되었다. 과형지수는 무처리구 과실은 0.82로 비정형과 기준이었는데 비해 'Manchurian', 'Hopa A', 'Virginia', 'Prunifolia', 'Spectabilis' 등을 인공수분한 경우 0.87~0.88로 정형과 기준에 도달하였다. PCR분석을 통한 꽃사과 품종의 자가불화합성 유전자형을 확인한 결과 'Manchurian', 'Virginia', 'Sentinel', 'Adam's', 'Asiatica', 'Yantaishagou', 'Hanyaehanakaidou'에서 $S_3$, $S_5$, $S_9$, $S_{10}$, $S_{20}$, $S_{26}$이 확인되었고, 염기서열 분석을 통해 $S_5$('Manchurian', 'Virginia')와 $S_9$('Yantaishagou')가 보고된 자가불화합성 유전자형과 일치하였다.

Keywords

References

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