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Çѱ¹È¯°æ»ýÅÂÇÐȸ / v.24, no.1, 2010³â, pp.62-68
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$CO_2$³óµµ¿Í ¿ÂµµÁõ°¡¿¡ µû¸¥ Çѱ¹Æ¯»ê½Ä¹° ¼¶ÀÚ¸®°ø°ú ±ÍȽŰ ¹Ì±¹ÀÚ¸®°øÀÇ ¹ß¾Æ, ½Ä¹°°èÀý ¹× ÀÙÀÇ ÇüÅÂÇÐÀû ¹ÝÀÀ¿¬±¸
( Effects of Elevated $CO_2$ Concentration and Temperature on the Response of Seed Germination, Phenology and Leaf Morphology of Phytolacca insularis(Endemic species) and Phytolacca americana(Alien species) ) |
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This study was conducted to find out how the germination, phenology and leaf morphology of Phytolacca insularis(endemic species of Korea) and P. americana(alien species) react to the global warming situation. Seed and seedlings of two species were sampled and placed under two separate conditions for the experiment. One of the seed and seedlings was treated in the glass house with control(ambient $CO_2$+ambient temperature, (AC-AT), and the other with control(elevated $CO_2$+ elevated temperature, EC-ET), over the period of one year, 2008-2009. The germination rate of two species was fast, and the time of their germination started early, when they were treated at EC-ET than at AC-AT. Furthermore, the germination rate of Phytolacca insularis(endemic species of Korea) was found to be comparatively lower than that of P. americana(alien species). The former showed only vegetative growth whereas the latter showed both vegetative growth and reproductive growth in one year period. The more $CO_2$ degree and temperature increased, phenological responses of two species, including leaf growth, the formation of flower stems, flowering, and fruit maturing, became much faster, and the time of their leaf-yellowing was delayed. The lamina length of P. insularis was not significantly affected by elevated $CO_2$ and temperature. The lamina length of P. americana, on the other hand, became longer at EC-ET than at AC-AT, but the leaf width of both species increased at EC-ET. As for the number of leaves, both species showed no difference. Finally, the ratio of the leaf area of P. insularis was high at AC-AT, but P. americana was high at EC-ET. These results indicate that P. americana, aliens species, reacts more sensitively to global warming than P. insularis, endemic species, does. |
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±âÈĺ¯È;$CO_2$Áõ°¡;¿Âµµ;ÀÚ»ýÁ¾;¿Ü·¡Á¾;¹ß¾Æ;°³È½Ã±â;ºñ¿±¸éÀû;CLIMATE CHANGE;ELEVATED $CO_2$;TEMPERATURE;NATIVE SPECIES;INVASIVE; |
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Çѱ¹È¯°æ»ýÅÂÇÐȸÁö / v.24, no.1, 2010³â, pp.62-68
Çѱ¹È¯°æ»ýÅÂÇÐȸ
ISSN : 1229-3857
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201022442398105)
¾ð¾î : Çѱ¹¾î |
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³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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