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Çѱ¹È¯°æ»ý¹°ÇÐȸ / v.22, no.1, 2004³â, pp.101-110
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ȯ°æ±¸¹è¿¡ µû¸¥ Bidens L.¼Ó ½Ä¹°ÀÇ ¼ºÀå¿¡ °üÇÑ ¿¬±¸
( Studies on the Growth of Bidens L. Along the Environmental Gradient ) |
| ÃÖ»ó±Ô;¾ç±Ýö; Áß¾Ó´ëÇб³ »ý¹°Çаú;õ¾È°ø¾÷´ëÇРȯ°æ°ø¾÷°ú;
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| ÀÚ»ýÁ¾ÀÎ °¡¸·»ç¸® (Bidens tripartita), µµ±úºñ¹Ù´Ã (B. bipinnata), ±ÍÈÁ¾ÀÎ ¹Ì±¹°¡¸·»ç¸® (B. frondosa), Èòµµ±úºñ¹Ù´Ã (B. pilosa var. minor)ÀÇ µµ±úºñ¹Ù´Ã¼Ó(Bidens) 4ºÐ·ù±ºÀÇ ¼ºÀå¹ÝÀÀ°ú »ýÅÂÀû ÁöÀ§ÆøÀ» ºñ±³¤ýºÐ¼®Çϱâ À§ÇÏ¿© ±¤µµ, Åä¾çÇÔ¼ö·®, Åä¾ç¹«±â¿µ¾ç¼ÒÀÇ 3°¡Áö ȯ°æ¿äÀκ°, ±¸¹èº° Àç¹è½ÇÇèÀ» ÇÏ¿´´Ù. Phonology´Â ±¸¹èº°·Î Å« Â÷À̰¡ ¾øÀ¸³ª, Á¾º°·Î´Â Â÷À̸¦ ³ªÅ¸³»¾î ±ÍÈÁ¾ÀÎ 2Á¾ÀÌ ÀÚ»ýÁ¾ÀÎ 2Á¾¿¡ ºñÇØ °³È ¹× °á½Ç½Ã±â°¡ ´Ê´Ù. ÃÑ °ÇÁß·®Àº ÀÚ»ýÁ¾ÀÎ 2Á¾¿¡ ºñÇØ ±ÍÈÁ¾ÀÎ 2Á¾ÀÌ ´ëü·Î ³ôÀ¸¸ç, ±¸¹èº°·Î´Â ±¤µµ¿Í Åä¾çÇÔ¼ö·®ÀÌ Áõ°¡ÇÒ¼ö·Ï °ÇÁß·®µµ Áõ°¡ÇÏ¿´°í, Åä¾ç¹«±â¿µ¾ç¼Ò ±¸¹è¿¡´Â ¹Ý´ëÀÇ °æÇâÀÌ ³ªÅ¸³µ´Ù. ȯ°æ¿äÀκ° ÃѰÇÁß·®Àº Åä¾ç¹«±â¿µ¾ç¼Ò, Åä¾çÇÔ¼ö·®, ±¤µµÀÇ ¼øÀ¸·Î ³·¾ÆÁ³´Ù. NARÀº B. bipinnata¿Í B. pilosa var minor¿¡¼ ±¤µµ¿Í ÇÔ¼ö·®Áõ°¡¿¡ µû¸¥ Áõ°¡¼Óµµ°¡ Å©¸ç, ¹Ý´ë·Î B. tripartita¿Í B. frondosa´Â ±× Áõ°¡¼Óµµ°¡ ÀÛ¾Ò´Ù. ±×·¯³ª Åä¾ç¹«±â¿µ¾ç¼Ò¿¡ ´ëÇØ¼´Â ¿µ¾ç¼Ò Áõ°¡¿¡ µû¶ó B, bipinnata¿Í B. pilosa var. minor°¡ ¿ÀÈ÷·Á °¨¼ÒÇÏ´Â °æÇâÀ» ³ªÅ¸³Â´Ù. RGRÀº ±¤µµÀÇ Áõ°¡¿¡ µû¶ó B. tripartita, B. bipinnata, B. frondosa, B. pilosa var. minorÀÇ ¼ø¼·Î ÀÛ¾ÆÁ³À¸¸ç, Åä¾çÇÔ¼ö·® ±¸¹è¿¡¼´Â B. bipinnata¿Í B. pilosa var. minor¿¡¼ Áõ°¡°æÇâÀÌ ÄÇ´Ù. Åä¾ç ¹«±â¿µ¾ç¼Ò ±¸¹è¿¡¼´Â B. pilosa¿Í B. tripartita´Â Åä¾ç¹«±â¿µ¾ç¼Ò Áõ°¡¿¡ µû¶ó RGRÀÌ ÀÛ¾ÆÁö´Â °æÇâÀ» ³ªÅ¸³Â´Ù. Shoot/root ratio´Â ȯ°æ¿äÀκ°·Î Á¾º° º¯µ¿ÀÌ Å©Áö ¾ÊÀ¸³ª, ÀÚ»ýÁ¾ÀÎ B. tripartita´Â Shoot/root ratio¿¡¼ °¢ ȯ°æ¿äÀÎ º°·Î °¨¼Ò °æÇâÀÌ ¶Ñ·ÇÇÏ´Ù. Á¾º° ¼ºÀ寝¼ºÀÇ ºñ±³°á°ú B. pilosa var. minor¿Í B. tripartita´Â ¾çºÐÀÌ Ã´¹ÚÇÑ ÀÔÁö¿¡¼ »ýÀ°ÀÌ ¿Õ¼ºÇÑ Æ¯Â¡À» º¸À̸ç, B. frondosa´Â ¾çºÐÀÌ Ç³ºÎÇÑ ÀÔÁö¿¡¼ »ýÀ°ÀÌ ¿Õ¼ºÇÑ Á¾À¸·Î ºÐ¼®µÈ´Ù. B. tripartita´Â ±¤¿¡ ´ëÇÑ ÇüÅÂÀû ÀûÀÀÀÌ Å©°í ¼öºÐÀ» ÁÁ¾ÆÇϴ Ư¼ºÀÌ ÀÖÀ¸¸ç, B. bipinnata´Â ÀÙ¿¡ ´ëÇÑ ÇüÅÂÀû ÇüÁúÀº Å©°Ô º¯È½ÃŰÁö ¾ÊÀ¸³ª ±¤ÀÌ Ç³ºÎÇÑ ÀÔÁö¸¦ ¼±È£ÇÑ´Ù. Niche breadth´Â B. bipinnata°¡ ±¤µµ¿Í Åä¾çÇÔ¼ö·® ±¸¹è¿¡¼ 0.875, 0.845·Î °¡Àå ³ÐÀ¸¸ç, Åä¾ç ¹«±â¿µ¾ç¼Ò ¿¡¼´Â B. pilosa var. minor°¡ 0.933À¸·Î ³Ð°Ô ³ªÅ¸³µ´Ù. B. tripartita´Â ¼¼ °¡Áö ȯ°æ¿äÀο¡¼ Niche breadth°¡ ¸ðµÎ Á¼¾Ò°í, B. frondosa´Â ±¤µµ¿Í Åä¾ç ¹«±â¿µ¾ç¼Ò¿¡¼ ³Ð°í Åä¾çÇÔ¼ö·®¿¡¼´Â °¡Àå Á¼Àº °ªÀ» ³ªÅ¸³Â´Ù. |
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| The growth and niche breath of four species, i.e., native plants such as Bidens tripauita and B. bipinnata and naturalized plants such as B. frondosa and B. pilosa var. minor, were studied as related with environmental gradients including light intensity, soil moisture and soil nutrient. There were no significant differences in the phonology within each environmental gradients while considerable differences were found between species; the two naturalized species bloomed and produced fruit later than the two native species. Two naturalized species exhibited relatively higher total dry weight than the two native counterparts within all environmental gradients. Total dry weight showed positive responses to light intensity and soil moisture, and negatively to soil nutrient. The relative contribution of the environmental factors to total dry weight decreased in the order of soil nutrient, soil moisture and light intensity. Both B. bipinnata and B. pilosa var. minor showed significantly higher net assimilation rate (NAR) than other species. Also, NARs of B. bipinnata and B. pilosa var. minor decreased with increasing soil nutrient. Relative growth rate (RGR) decreased in order of B. tripartita, B. bipinnata, B. frondosa and B. pilosa var. minor in response to light intensity. In addition, RGRs of B. bipinnata and B. piEosa yay. minor increased in response to soil moisture, while those of B. pilosa var. minor and B. tripartita decreased with increment of soil nutrient. No significant fluctuations of shoot/root ratio were not observed in three species, but a native species, B. tripartita showed n decreased shoot/root ratio in response to soil nutrient. Comparing the growth characteristics of the species, B. pitosa var. minor and 3. tripartita revealed vigorous growth on barren soil. On the other hand, B. frondosa exhibited vigorous growth on fertile soil. Morphologically, B. tripartita adapted to light and required considerable moisture. On the contrary, the leaves of B. bipinnata did not change considerably in their area, although it preferred habitat with abundant light. In terms of niche breadth, B. bipinnata showed the widest ranges of 0.875 and 0.845 for light intensity and soil moisture gradients, respectively. B. pilosa var. minor showed a value of 0.933 for soil nutrient gradient. B. tripartita showed narrow ranges for the three environmental factors, whereas B. frondosa showed wide values for light intensity and soil nutrient, but relatively narrow value for soil moisture. |
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| Ű¿öµå |
| Bidens;NAR;niche breadth;RGR;shoot/root ratio; |
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ȯ°æ»ý¹° / v.22, no.1, 2004³â, pp.101-110
Çѱ¹È¯°æ»ý¹°ÇÐȸ
ISSN : 1226-9999
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200411922293124)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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