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  °³Ã¼¸ñ °ø°£ºÐÆ÷¿¡ µû¸¥ À¯Àü±¸Á¶ Spatial Genetic Structure Based on Isozyme Studies
  ±Û¾´ÀÌ : °ü¸®ÀÚ     ³¯Â¥ : 08-04-11 14:13     Á¶È¸ : 10104    
Á¡ºÀ»ê À㳪¹«ÀÓºÐÀÇ °³Ã¼¸ñ °ø°£ºÐÆ÷¿¡ µû¸¥ À¯Àü±¸Á¶ Spatial Genetic Structure at a Korean Pine (Pinus koraiensis) Stand on Mt. Jumbong in Korea Based on Isozyme Studies <Çѱ¹ÀÓÇÐȸÁö 90(1):43-54 Jour. Kor. For. Soc. 90(1):43-54 2001>  Corresponding author honeutal@chollian.net

Áý´ÜÀÇ À¯ÀüÀû ºÐÈ­´Â ȯ°æ¿äÀΰú À¯ÀüÀû ¼ÒÀÎÀÇ º¹ÀâÇÑ »óÈ£°ü°è¿¡ ÀÇÇØ ÀÌ·ç¾îÁö´Âµ¥, Áý´Ü³» ¿äÀÎÀ¸·Î´Â Á¾ÀÚ³ª È­ºÐ ºñ»ê, ±¹¼Òȯ°æº¯ÀÌ ¹× °³Ã¼ÀÇ ºÐÆ÷¹Ðµµ µîÀ» µé ¼ö ÀÖ´Ù. Á¡ºÀ»êÀÇ À㳪¹« ÀӺг» °³Ã¼ ºÐÆ÷¿Í À¯ÀüÀû ±¸¼º¿¡ ´ëÇÑ ºÐ¼®À» À§ÇÏ¿© ½Å°¥³ª¹«±º¶ô³» À㳪¹« ¿ìÁ¡ÀӺп¡ 100x100m Á¶»ç±¸¸¦ ¼³Á¤ÇÏ¿´À¸¸ç, À㳪¹« 325°³Ã¼¿¡ ´ë¸¸ µ¿À§È¿¼Ò ºÐ¼®À» ½Ç½ÃÇÏ°í, °ø°£ÀÇ ÀÚ±â»ó°ü¼ºÀ» °è»êÇÏ¿´´Ù. 11°³ µ¿À§È¿¼Ò À¯ÀüÀÚÁ¿¡¼­ °üÂûµÈ Æò±Õ ´ÙÇü¼º À¯ÀüÀÚÁ ºñÀ²(P)Àº 72.2%, ÀÌÇüÁ¢ÇÕµµÀÇ °üÂûÄ¡(Ho)´Â 0.200, ±â´ëÄ¡(He)´Â 0.251·Î ÀÌÇüÁ¢ÇÕü °ú¼ÒÇö»óÀ» ³ªÅ¸³»¾î ±Ù¿¬°¡°èÀÇ °³Ã¼µéÀÌ ´Ù¼ö ºÐÆ÷ÇÏ´Â °ÍÀ¸·Î Á¶»çµÇ¾ú´Ù. µ¿À§È¿¼ÒÀÇ À¯ÀüÀÚÇü¿¡ µû¶ó 325°³Ã¼´Â ÃÑ 147°³ÀÇ ±×·ìÀ¸·Î ±¸ºÐµÇ¾úÀ¸¸ç, ÇÑ °³ À¯ÀüÀÚÇü¿¡ ÃÖ´ë 34°³Ã¼°¡ Æ÷ÇԵǾú´Ù. µ¿À§È¿¼Ò À¯ÀüÀÚÇüÀÇ ÀÌÁú¼ºÀÌ 24~32m ±¸°£(°Å¸®°£°Ý 8m)À» ±âÁ¡À¸·Î Áõ°¡ÇÏ´Â ¾ç»óÀ» º¸¿´À¸¸ç, »ýÀåƯ¼º(¼ö°í¿Í Á÷°æ)¿¡ ´ëÇÑ simple block distanceµµ 24~32m ±¸°£¿¡¼­ ÀÓÀǺÐÆ÷¸¦ º¸¿´´Ù. ³ôÀº ±Ù¿¬±³¹èÀÇ °íÁ¤°è¼ö(F=0.204), À¯ÀüÀû ÀÚ±â»ó°ü¼º, »ýÀåƯ¼ºÀÇ ºÐ¼®, µ¿ÀÏ À¯ÀüÀÚÇüÀÇ ºÐÆ÷¹üÀ§ µîÀ» °í·ÁÇÒ ¶§ Á¡ºÀ»ê À㳪¹« ÀÓºÐÀº È­ºÐºñ»êÀ̳ª ½£Æ´ Çü¼º¿¡ µû¸¥ Á¾ÀÚÀÇ ÁýÁß ÅõÀÔ¿¡ µû¸¥ À¯ÀüÀÚ À̵¿(gene flow)º¸´Ù´Â À¯ÀüÀû ±Ù¿¬ °³Ã¼ÀÇ ¹Ðµµ¿¡ ÀÇÁ¸(density dependent)Çؼ­ À¯ÀüÀû ±¸Á¶¸¦ À¯ÁöÇÏ´Â °ÍÀ¸·Î »ý°¢µÇ¸ç, À¯ÀüÀû µ¿Áú¼ºÀ» °®´Â ±º¶ôÀÇ Å©±â´Â 24~32m¿¡¼­ °áÁ¤ÇÒ ¼ö ÀÖ¾ú´Ù. º» ¿¬±¸ÀÇ °á°ú À¯ÀüÀÚ¿øº¸Á¸À» À§ÇÑ °³Ã¤ÀÇ ¼±Á¤Àº ÃÖ¼ÒÇÑ 37mÀÌ»óÀÇ °Å¸®¸¦ ¶ç¾î¾ß ¹Ù¶÷Á÷ÇÑ °ÍÀ¸·Î Á¶»çµÇ¾ú´Ù.
 
Genetic differentiation of populations is resulted from the environmental and the genetic effects, and the interactions between them. Whereas, the major factors influencing the genetic differentiation within populations are the gene flow induced by seed or pollen dispersal, the microsite heterogeneity, and the density-dependent distribution of individuals. To understand the spatial genetic structure and the distribution pattern of Korean pines (Pinus koraiensis), one 100¡¿100m plot was established at a Korean pine stand in Quercus mongolica community on Mt. Jumbong in Korea. To estimate the coefficient of spatial autocorrelation as Moran's index and an analogue, simple block distance, isozyme markers were analyzed in 325 Korean pines. For 11 polymorphic loci observed in 9 enzyme systems, the average percentage of polymorphic loci, the observed and expected heterozygocity were 72.2%, 0.200, and 0.251, respectively. It was revealed the excess of homozygotes was observed in the plot, which suggests that there may be more number of consanguineous trees than expected. On the basis of isozyme genotypes observed in this study, 325 trees were classified into 147 groups in which the maximum number of trees for one group was 34. From the distance class of 24~32m, the genetic heterogeneity began to increase. The variation of simple block distance against the growth performance by tree height and diameter also showed the same trend at 24 ~32m class. According to high fixation index(F=0.204), the spatial genetic structure within a stand, the analysis of the growth performance, and the distribution patterns of identical genotypes, we inferred that the genetic structure of a Korean pine stand in Mt. Jumbong has been maintained rather density-dependent mechanism than the gene flow, such as the pollen dispersal or the heavy input of seeds following the forest gaps. The genetic patchy size was determined between 24~32m, which suggests that the selection of individuals for the ex situ conservation of Korean pine in Mt. Jumbong may be desirable to be made with the spatial distance over 37 meters between trees.
Key words: Pinus koraiensis, spatial genetic structure, isozyme, genetic patch

   

 
   

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