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Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ / v.18, no.1, 2009³â, pp.15-22
±¤µ¶¸³¿µ¾ç ±â³» ¹Ì¼¼Áõ½Ä½Ã½ºÅÛ¿¡¼­ ±¤°­µµ ¹× $CO_2$ ³óµµ¿¡ µû¸¥ °¨ÀÚ ¼Ò½Ä¹°Ã¼ »ýÀ°ºÐ¼® ¹× ¸ðµ¨¸µ¿¡ ÀÇÇÑ »ýÀ°´Ü°èº° ÀûÁ¤ ȯ°æÁ¶°Ç ¼³Á¤
( Growth of Potato Plantlets (Solanum tuberosum L. cv. Dejima) in Photoautotrophic Micropropagation System at Different Light Intensities and $CO_2$ Concentrations and Decision of Optimum Environment Conditions with Growth Stage by Modelling )
¼ÕÁ¤ÀÍ;ÀÌÈÆ;¿À¸í¹Î; ¼­¿ï´ë ½Ä¹°»ý»ê°úÇкΠ¹× ³ó¾÷»ý¸í°úÇבּ¸¿ø;¼­¿ï´ë ½Ä¹°»ý»ê°úÇкΠ¹× ³ó¾÷»ý¸í°úÇבּ¸¿ø;ĵÀÚ½ºÁÖ¸³´ë ¿ø¿¹Çаú;
 
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º» ¿¬±¸´Â ¹¦ÀÇ »ýÀ°À» ÃÖ´ëÈ­Çϱâ À§ÇÏ¿© »ýÀ° ´Ü°è¸¦ ÀÓÀÇ·Î ±¸ºÐÇÏ°í °¢ ´Ü°è º° ÀûÁ¤ ȯ°æ Á¶°ÇÀ» È®¸³ÇÔ¿¡ ¸ñÀûÀ» µÎ¾ú´Ù. »ýÀ° ´Ü°è´Â ÃÑ 20ÀÏÀÇ ¹è¾ç±â°£À» 6ÀÏ(1´Ü°è), 7ÀÏ(2´Ü°è), 7ÀÏ(3´Ü°è)ÀÇ 3´Ü°è·Î ±¸ºÐÇÏ¿´´Ù. ù ¹øÂ° ´Ü°è´Â È°Âø±â·Î¼­ ȯ°æ ó¸® º° »ýÀ°¿¡ Å« Â÷À̰¡ ³ªÅ¸³ªÁö ¾Ê¾Ò´Ù. ³ôÀº ȯ°æ Á¶°Ç¿¡ ÀÇÇÑ ÀÙÀÇ ÀåÇØ¸¦ °í·ÁÇÏ¿´À» ¶§, $80{mu}mmol{cdot}m^{-2}{cdot}s^{-1}$ ÀÇ PPFD ¹× ´ë±â ÁßÀÇ $CO_2$ ³óµµ°¡ ÀûÇÕÇÏ¿´´Ù. µÎ ¹øÂ° ´Ü°è¿¡¼­´Â PPFD ¹× $CO_2$ Á¶°ÇÀÌ ³ô¾ÆÁü¿¡ µû¶ó °Ç¹° ÁßÀ» Áß½ÉÀ¸·Î ºÎºÐÀûÀ¸·Î Çâ»óµÇ¾ú´Ù. ¿¡³ÊÁö È¿À²°ú »ýÀ°À» °í·ÁÇÒ ¶§, $160{mu}mmol{cdot}m^{-2}{cdot}s^{-1}$ ÀÇ PPFD¿Í $700{mu}mmol{cdot}mol^{-1}$ÀÇ $CO_2$°¡ ÀûÇÕÇÒ °ÍÀ¸·Î »ý°¢µÇ¾ú´Ù. ¼¼ ¹øÂ° ´Ü°è¿¡¼­´Â PPFD ¹× $CO_2$ ³óµµ°¡ ³ô¾ÆÁü¿¡ µû¶ó À¯ÀÇÀûÀ¸·Î »ýÀ°ÀÌ Çâ»óµÇ¾úÀ¸¸ç, ÀÙ ¹× ¸¶µðÀÇ ¹ß´Þ»óŵµ ÇöÀúÈ÷ Çâ»óµÇ¾ú´Ù. µû¶ó¼­ º¸´Ù Àû±ØÀûÀ¸·Î »ýÀ°ÁõÁøÀ» °í·ÁÇÒ ¶§, $320{mu}mmol{cdot}m^{-2}{cdot}s^{-1}$ PPFD¿Í $1800{mu}mol{cdot}mol^{-1}$ÀÇ $CO_2$°¡ ÀûÇÕÇÒ °ÍÀ¸·Î »ý°¢µÇ¾ú´Ù. »ýÀ° ´Ü°èº° ȯ°æ Á¶ÀýÀº Ãʱâ´Ü°è¿¡ »ó´ëÀûÀ¸·Î ³·Àº Á¶°ÇÀ» À¯ÁöÇϰí Èıâ´Ü°è¿¡¼­ ÃæºÐÇÑ Á¶°ÇÀ» Á¦°øÇÔÀ¸·Î½á °ÇÀüÇÑ ¹¦¸¦ »ý»êÇÒ ¼ö ÀÖ°í ¿¡³ÊÁö ¹× ¹°ÁúÀÇ ÅõÀÔ·®À» Àý¾àÇÒ ¼ö ÀÖ´Ù.
Adequate environment conditions with growth stage of potato were decided in a photoautotrophic micropropagation system using models. Total 20 day-period of growth were divided into three growth periods such as 6 (stage 1), 7(stage 2), and 7(stage 3) days. At the 1st stage, no significant differences were observed in the growth of potato plantlets at various photosynthetic photon flux density (PPFD) and $CO_2$ conditions. Considering damaged leaves, $80;mmol{cdot}m^{-2}{cdot}s^{-1}$ PPFD and ambient $CO_2$ level were adequate in this stage. At the 2nd stage, significant differences were partly observed in several growth characteristics including dry weight. Based on the dry matter model, over $240;mol{cdot}m^{-2}{cdot}s^{-1}$ PPFD was too high to cultivate potato plantlets at this stage due to the occurrence of damaged leaves. Considering both plant growth and energy efficiency, $160;mol{cdot}m^{-2}{cdot}s^{-1}$ PPFD and $700;mol{cdot}mol^{-1};CO_2$ were selected for the adequate combination. At the 3rd stage, the biomass accumulation was significantly induced in potato plantlets under higher levels of PPFD and $CO_2$ concentration as suggested by increased fresh and dry weights. However, we could not find the saturated point with regard to dry matter due to continuous increase of dry mater even under maximum PPFD ($320;mmol{cdot}m^{-2}{cdot}s^{-1})$. Thus, $320;mol{cdot}m^{-2}{cdot}s^{-1}$ PPFD and $1800;mol{cdot}mol^{-1};CO_2$ were considered as the best choice at final stage in this study. In conclusion, even though the growth period of micropropagated potato plantlets was quite a short, favorable environmental conditions required at each growth stage were different. This technique could improve the growth of micropropagated plantlets compared to the conventional micropropagation and apply to other agriculturally important crops as well as potato in the future.
 
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¿¡³ÊÁö È¿À²;$CO_2$ ³óµµ;$CO_2$;energy efficiency;PPFD;
 
»ý¹°È¯°æÁ¶ÀýÇÐȸÁö / v.18, no.1, 2009³â, pp.15-22
Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ
ISSN : 1229-4675
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200916263468245)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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