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Çѱ¹ÀܵðÇÐȸ / v.23, no.2, 2009³â, pp.331-344
¼öºÐ½ºÆ®·¹½º ÇÏ¿¡ ÀÖ´Â ¹öÆÈ·Î±×·¡½º¿¡¼­ °ËÃâµÈ ¹«¼º»ý½ÄüÀÇ »ý¸®ÇÐÀû Á¶Á¤
( Inter-ramet Physiological Integration Detected in Buffalograss(Buchloe dactyloides (Nutt.) Engelm.) under Water Stress )
²ï¿ëÄû¾Ó;ÀÌ´ÙÀÌ¿¨;ÇÑ·¹ÀÌ;ÁÖ°ü½«;·ùÁؼ§;À§ÁÖÀ×;¼±Á¨¾á; º£ÀÌ¡ ÁÖÀÓ¾÷±¹ ÀÓÇבּ¸¼Ò;³ë½º´ÙÄÚ´Ù´ëÇб³ ½Ä¹°Çаú;º£ÀÌ¡ ÁÖÀÓ¾÷±¹ ÀÓÇבּ¸¼Ò;º£ÀÌ¡ ÁÖÀÓ¾÷±¹ ÀÓÇבּ¸¼Ò;º£ÀÌ¡ ÁÖÀÓ¾÷±¹ ÀÓÇבּ¸¼Ò;º£ÀÌ¡ ³ó.ÀÓÇоÆÄ«µ¥¹Ì ÃÊÁö¿¬±¸°³¹ß¼¾ÅÍ;º£ÀÌ¡ ÁÖÀÓ¾÷±¹ ÀÓÇבּ¸¼Ò;
 
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Buffalograss´Â ³»ÇÑ, ³»¼­, ±×¸®°í ³»Çѹ߿¡ ¿ì¼öÇÑ ÁÖ¿ä Àܵð Á¾ Áß ÇϳªÀÌ´Ù. ´Ù¾çÇÑ È¯°æ¿¡¼­ buffalograssÀÇ »ý¸®ÇÐÀû Á¶Á¤(integration)À» ÀÌÇØÇÏ´Â °ÍÀº ±ÕÀÏÇÑ ÀܵðÀÇ ÁúÀ» µµ¸ðÇÏ°í °æÁ¾Àû Àç¹è¹æ¹ýÀÇ °³¹ß¿¡ µµ¿òÀÌ µÈ´Ù. º» ¿¬±¸ÀÇ ¸ñÀûÀº ¹° ºÎÁ·ÀÇ ½ºÆ®·¹½º 󸮿¡¼­ÀÇ buffalograssÀÇ »ý¸®ÇÐÀû Á¶Á¤°úÁ¤¿¡¼­ lipid peroxidation°ú »êÈ­¹æÁöÁ¦ÀÇ ¿¬°ü¼ºÀ» Æò°¡ÇÏ¿´´Ù. ÇÑ ½ÇÇè¿¡¼­ buffalograss´Â ³× °³ÀÇ ±¸ºÐµÈ Ä­¸·ÀÌ ¼ºÀå À¯´ÖÀÇ Á߽ɿ¡¼­ Àç¹èµÇ¾ú°í, ÀÏÁÖÀÏ¿¡ Çѹø(+), ÀÏÁÖÀÏ¿¡ µÎ ¹ø(-) °ü¼öó¸®¿Í ¸ð·¡(S) ¶Ç´Â ÇÇÆ®(P)¿Í¸¦ È¥ÇÕÇÑ ´Ù¼¸ °¡Áö Åä¾ç Á¶ÇÕÀ¸·Î ó¸®ÇÏ¿´´Ù(P+S-P-S+, P+P+P+P+, S-S-S-S-, P-P-P-P-, and S+S+S+S+). ±× °á°ú, ±ÕÀÏÇÏ°Ô È¥ÇÕµÈ »óÅä¿¡¼­ »ýÀåÇÑ ÁÙ±âÀÇ ¼ö°¡ ³×°³ÀÇ ´ÜÀÏ »óÅä¿¡ Á¤ÂøÇÑ °Íº¸´Ù ´õ ¸¹¾Ò´Ù. µÎ ¹øÂ° ½ÇÇè¿¡¼­´Â Hoagland ¿ë¾×($S_o$), ¶Ç´Â 20% PEG-6000ÀÌ ÇÔÀ¯µÈ Hoagland¿ë¾×($S_s$) ¾È¿¡ ÇϳªÀÇ ¶ó¹ÌÆ®(¹«¼º»ý½Äü) ȤÀº ¿¬°áµÈ ¶ó¸¶Æ®¸¦ ´ÙÀ½°ú °°Àº ¿©·¯ °¡Áö ó¸®¿Í ºñ±³ ½ÇÇèÇÏ¿´´Ù. ¿¬°áµÈ ¶ó¹ÌÆ®µéÀÇ Ã³¸®´Â Hoagland ¿ë¾×¾ÈÀÇ ¾î¸° ¶ó¹ÌÆ®($Y_{os}$)¿Í 20%PEG-6000°¡ ÇÔÀ¯µÈ Hoagland ¿ë¾×¾ÈÀÇ ¼º¼÷ÇÑ ¶ó¹ÌÆ®($O_{os}$), Hoagland ¿ë¾× ´Üµ¶¿¡ ¼º¼÷ÇÑ ¶ó¹ÌÆ®($O_{ys}$), 20%PEG-6000 ÇÔÀ¯µÈ Hoagland ¿ë¾×¾ÈÀÇ ¾î¸° ¶ó¹ÌÆ®($Y_{ys}$)¿´´Ù. Lipid peroxidation, antioxidants, prolineÀº °¢±â ´Ù¸¥ ¼öºÐ stress Á¤µµ¿¡¼­ ¶ó¹ÌÆ®µé °£ÀÇ »ý¸®ÇÐÀû Ȱ¼ºÀ» º¸¿© ÁÖ¾ú´Ù. Superoxide dismutase (SOD), Guaiacol peroxidase (G-POD), malondi aldehyde (MDA), free prolineÀÇ È°¼ºµµ ó¸® ÈÄ ½Ã°£¿¡ µû¶ó »ó´ëÀûÀÎ »ý¸®ÇÐÀû Ȱ¼ºÀ» º¸¿´´Ù.
Buffalograss is an important turfgrass species with excellent cold, heat, and drought tolerance. Understanding the physiological integration of buffalograss under heterogeneous conditions helps to develop cultural practices that better use limited resources for uniform turf quality. The objective of this study was to evaluate physiological integration of buffalograss under water deficit stress and the involvement of lipid peroxidation and antioxidants in the process. In one experiment, buffalograss was planted in the center of a four-compartment growth unit. Watering frequencies, once a week(+) and once in two weeks(-), were combined with the sand(S) or peat(P) in each unit to generate five total treatments(P+S-P-S+, P+P+P+P+, S-S-S-S-, P-P-P-P-, and S+S+S+S+). The average number of shoot established from the heterogeneous root-zone medium was higher than the average of four possible homogeneous media. In second experiment, single ramet in Hoagland solution($S_0$) or single ramet in Hoagland solution with 20% PEG-6000($S_s$) were compared with two connectedramets under different treatments. Treatments for connected ramets were young ramet in Hoagland solution($Y_{os}$) and old ramet in Hoagland solution with 20% PEG-6000($O_{os}$), and old ramet in Hoagland solution($O_{ys}$) and young ramet in Hoagland solution with 20% PEG-6000($Y_{ys}$). Lipid peroxidation, antioxidants, and proline showedphysiological integration between ramets subjected to different levels of water stress. Superoxide dismutase(SOD), Guaiacol peroxidase(G-POD), malondialdehyde(MDA), and free proline also showed different time courses and relative activities during the physiological integration.
 
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»êÈ­¾ïÁ¦;Àܵð °ü¸®;»ýÅÂ;Áö¹æÁú°ú»êÈ­;Turfgrass management;ecology;lipid peroxidation;antioxidant;
 
Çѱ¹ÀܵðÇÐȸÁö / v.23, no.2, 2009³â, pp.331-344
Çѱ¹ÀܵðÇÐȸ
ISSN : 1229-3253
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200920036086850)
¾ð¾î : ¿µ¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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