Journal of Korean Society of Forest Science (한국산림과학회지)

Korean Society of Forest Science (한국산림과학회)
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Morphological Variation of Winter Buds of Quercus variabilis BL. In Korea

굴참나무 천연집단(天然集團) 동아(冬芽)의 형태적(形態的) 변이(變異)

  • Song, Jeong-Ho (Department of Forestry, Graduate School, Kangwon National University) ;
  • Park, Mun-Han (Korea Forest Research Institute) ;
  • Han, Sang-Urk (Korea Forest Research Institute) ;
  • Lee, Wi-Young (Korea Forest Research Institute) ;
  • Park, Wan-Geun (Division of Forest Resources, College of Forest Sciences, Kangwon National University) ;
  • Yi, Jae-Seon (Division of Forest Resources, College of Forest Sciences, Kangwon National University)
  • Received : 2001.06.23
  • Accepted : 2001.08.01
  • Published : 2001.09.30
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Abstract

For the study of morphological variation in winter buds of Q. variabilis $B_L$. natural populations in Korea, 16 populations were selected through the country in consideration of latitude, longitude, altitude, and geographical characters. Thirty trees were randomly selected from each population and 30 terminal and 30 lateral buds were sampled below 1/3 crown length of each tree. Four morphological characters including length and width of terminal and lateral buds were measured. 1. Length and width of terminal and lateral buds were in the ranges 6.9~11.3cm, 3.0~3.7cm, 6.1~8.9cm, and 2.5~3.1cm, respectively. The coefficient of variation were in about 20% in all the characters investigated. 2. All the characters were significantly different among populations as well as among individuals within populations. The degree of contribution of variance among individuals within populations was higher than that among populations. 3. Length of terminal bud showed positive correlation with length and width of lateral bud; and width of lateral bud with width of terminal bud and length of lateral bud. Also, positive correlations were observed between longitude and width of terminal bud, between latitude and length of terminal and lateral bud. 4. Cluster analysis using complete linkage method for winter bud characters showed two groups to Euclidean distance 3.4. They were group I of population 8 and group II of populations 1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13, 14, 15, and 16. However, group II was divided into two at Euclidean distance 1.5 that are a group including populations 1, 2, 7, 9, and 11(groupII-1) and the other group including populations 3, 4, 5, 6, 10, 12, 13, 14, 15, and 16(groupII-2).

굴참나무 동아의 형태적 변이를 연구하기 위하여 위도, 경도, 해발고 및 지리적 특성을 고려하여 16개 천연집단을 선발하였다. 각 집단별로 30개체를 대상으로 개체목당 수관 1/3 하단부에서 정아와 측아를 30개씩 고르게 채집하여 정아와 측아의 길이 및 폭에 대한 변이를 조사한 결과는 다음과 같다. 1. 정아길이, 정아폭, 측아길이 및 측아폭은 각각 6.9~11.3cm, 3.0~3.7cm, 6.1~8.9cm 및 2.5~3.1cm로 나타났으며, 모든 특성에서 약 20% 내외의 변이폭을 보였다. 2. 동아특성에 대한 변이는 집단간 및 집단내의 개체간에 고도의 유의적인 차이를 보였으며 특히, 분산기여도는 집단간보다 집단내의 개체간에 큰 것으로 나타났다. 3. 상관분석한 결과 정아길이는 측아걸이 및 폭과, 측아폭은 정아폭 및 측아길이와 정의 상관을 나타내었으며, 또한 지리적 변이에 있어 위도는 정아폭과, 경도는 정아길이 및 측아길이와 정의 상관을 나타내었다. 4. 군집분석한 결과는 거리지수 3.4에서 2개의 그룹 즉, I그룹(Pop. 8)과 II그룹(Pop. 1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13, 14, 15, 16)으로 나뉘었으며, 거리지수 1.5에서는 II그룹이 다시 Pop. 1, 2, 7, 9, 및 11의 군집(II-1그룹)과 Pop. 3, 4, 5, 6, 10, 12, 13, 14, 15 및 16의 군집(II-2그룹)으로 나뉘어 거리지수 1.2 이상에서 총 III그룹으로 분리되었다.

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