한국산림과학회지 (Journal of Korean Society of Forest Science)

  • 제100권2호
  • /
  • Pages.131-135
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  • 2011
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  • 2586-6613(pISSN)
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  • 2586-6621(eISSN)
한국산림과학회 (Korean Society of Forest Science)
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뜰단풍의 성 형태, 결실특성 및 종자활력

Sex Morph, Fruiting Characteristics, and Seed Viability of Acer palmatum var. matsumurae (Koidz.) Makino

  • 김갑태 (상지대학교 산림과학과)
  • Kim, Gab Tae (Department of Forest Sciences, Sangji University)
  • 투고 : 2010.12.01
  • 심사 : 2011.04.21
  • 발행 : 2011.06.30
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초록

단풍나무속에 흔하다고 알려진 이형자웅이숙현상을 파악해 보고자, 원주지역에 생육 중인 뜰단풍(Acer palmatum var. matsumurae) 101주를 대상으로 성 형태, 결실특성 및 종자활력에 대하여, 2010년 4월 초순부터 10월 하순까지 조사하였다. 101주의 뜰단풍 중에서 74개체(73.3%)에서는 수꽃이 먼저 개화하고, 암술은 흔적기관인 웅예선숙(雄蕊先熟)개체 (Protandrous, PA)였으며, 27개체(26.7%)는 암꽃이 먼저 개화하고, 수술이 소실되는 웅예선숙(雄蕊先熟) 개체(Protgynous, PG)로 뜰단풍은 이형자웅이숙(異型雌雄異熟: heterodichogamy)하는 것이 밝혀졌다. 성형태에 따른 화서당 꽃 수와 종자셑 수는 통계적 유의차가 인정되었으며, 웅예선숙 개체가 자예선숙 개체보다 많았다. 건전종자와 부후종자의 비율에서는 성 형태 간의 통계적 유의성이 인정되었다. 건전종자의 비율이 웅예선숙 개체에서 46.4%였으며, 자예선숙 개체에서는 65.6%로 나타났다. 부후종자의 비율은 웅예선숙 개체에서는 49.6%였으며, 자예선숙 개체에서는 23.6%로 나타났다. 성형태간의 부후종자율의 차이는 암꽃의 개화시기와 종실가해 해충들의 활동시기와 관련이 있을 것이라 사료된다.

To examine the sex morph, fruiting characteristics and seed viabilities of Acer palmatum var. matsumurae (Koidz.) Makino, the flowers and seed-sets of 101 trees were collected from early April to late October 2010, and floral structure and seed viability were studied. Among investigated 101 trees, 73.3% of trees were protandrous (PA: pollen is shed before stigmas are receptive) and 26.7% were protogynous (PG: stigmas are receptive before pollen is shed). Acer palmatum var. matsumurae has heterodichogamous sexual system. Number of flowers and seed-sets per inflorescence are significantly different between sex morphs, and PA has more flowers and seed-sets per inflorescence than PG. Rates of sound seeds and decayed seeds are significantly different between sex morphs. Rates of sound seeds were 46.4% in PA, but 65.6% in PG. and rates of decayed seeds were 49.6% in PA, but 23.6% in PG. The differences of decayed seeds' rates between sex morphs might be related with the timing of pistil flower blooming and insect pests' outbreak.

키워드

참고문헌

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