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Çѱ¹È¯°æ»ý¹°ÇÐȸ / v.20, no.3, 2002³â, pp.197-204
Àú¼±·® $gamma$¼± Á¶»ç°¡ Âü¹ÚÀÇ Ãʱ⠻ýÀ°°ú È¿¼Ò Ȱ¼º ¹× ±¤ÇÕ¼º ´É¿¡ ¹ÌÄ¡´Â ¿µÇâ
( Effects of Low Dose $gamma$-Radiation on the Growth, Activities of Enzymes and Photosynthetic Activities of Gourd (Lagenaria siceraria) )
ÀÌÇý¿¬;±èÀ缺;¹é¸íÈ­;ÀÌ¿µ±Ù;ÀÓµ·¼ø; Çѱ¹¿øÀڷ¿¬±¸¼Ò µ¿À§¿ø¼Ò ¹æ»ç¼±ÀÀ¿ë¿¬±¸ÆÀ;Çѱ¹¿øÀڷ¿¬±¸¼Ò µ¿À§¿ø¼Ò ¹æ»ç¼±ÀÀ¿ë¿¬±¸ÆÀ;Çѱ¹¿øÀڷ¿¬±¸¼Ò µ¿À§¿ø¼Ò ¹æ»ç¼±ÀÀ¿ë¿¬±¸ÆÀ;Çѱ¹¿øÀڷ¿¬±¸¼Ò µ¿À§¿ø¼Ò ¹æ»ç¼±ÀÀ¿ë¿¬±¸ÆÀ;Çѱ¹¿øÀڷ¿¬±¸¼Ò µ¿À§¿ø¼Ò ¹æ»ç¼±ÀÀ¿ë¿¬±¸ÆÀ;
 
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Àú¼±·® $gamma¼± Á¶»ç°¡ Âü¹ÚÀÇ Ãʱâ»ýÀ°°ú »ý¸®È°¼º¿¡ ¹ÌÄ¡´Â È¿°ú¸¦ ¾Ë¾Æº¸±â À§ÇÏ¿© Âü¹Ú Á¾ÀÚ¿¡ $gamma¼±À» 0-2O Gy ¼öÁØÀ¸·Î Á¶»çÇÏ¿© »ýÀ°À» °üÂûÇÏ¿´´Ù. Àú¼±·® $gamma¼±¿¡ ÀÇÇÑ Âü¹ÚÀÇ Ãʱâ»ýÀ°Àº ´ëÁ¶±¸¿¡ ºñÇØ 4-16Gy¿¡¼­ ´Ù¼Ò Áõ°¡ÇÏ¿´°í, »ýÀ° Á¶»ç½Ã ÃøÁ¤ÇÑ ÀÚ¿±ÀÇ °æ¿ì catalase¿Í Peroxidase Ȱ¼ºÀÌ ´ëÁ¶±¸¿¡ ºñÇØ 8 Gy Á¶»ç±¸¿¡¼­ °¡Àå ³ô¾ÒÀ¸¸ç º»¿±Àº peroxidaseȰ¼ºÀÌ 4 Gy Á¶»ç±¸¿¡¼­ È®¿¬È÷ Áõ°¡ÇÏ¿´´Ù. Àú¼±·® $gamma¼±À» Á¶»çÇÑ ¹Ú ½Ä¹°Ã¼ÀÇ ±¤ ½ºÆ®·¹½º¿¡ ´ëÇÑ ¹ÝÀÀÈ¿°ú´Â ±¤°èIIÀÇ ±¤È­ÇÐÀû È¿À²ÀÌ ´ëÁ¶±¸¿Í 8 GyÀÇ °æ¿ì 50% Á¤µµ °¨¼ÒµÇ¾úÀ¸³ª 4 Gy¿¡¼­´Â 40% Á¤µµÀÇ °¨¼Ò¸¦ º¸¿´´Ù. ¹Ý¸é Fo´Â ±¤ÀúÇØ°¡ ÁøÇàµÊ¿¡ µû¶ó ¾à°£ÀÇ Áõ°¡¸¦ º¸¿´À¸³ª ´ëÁ¶±¸³ª Àú¼±·® Á¶»ç±¸»çÀÌÀÇ Â÷ÀÌ´Â °ÅÀÇ ¾ø´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ±¤°èIIÀÇ ±¤¾çÀÚ ¼öÀ², $varphi_{PSII}$°ú ±¤°èII ¹ÝÀÀÁß½ÉÀÇ ÈïºÐ Æ÷ȹ´É, 1/Fo-l/Fm ¶ÇÇÑ ±¤ÀúÇØ°¡ ÁøÇàµÇ´Â µ¿¾È °¨¼ÒÇÏ¿© $varphi_{PSII}$´Â ´ëÁ¶±¸¿Í 8 GyÀÇ °æ¿ì 20% Á¤µµ °¨¼Ò¸¦ º¸ÀÎ ¹Ý¸é 4 Gy Á¶»ç±¸´Â 15%ÀÇ °¨¼Ò¸¦ º¸¿´°í, 1/Fo-lF/mÀº ´ëÁ¶±¸¿Í 8 Gy´Â 55%, 4 Gy´Â 45%ÀÇ °¨¼Ò¸¦ ³ªÅ¸³Â´Ù. ºñ±¤È­ÇÐÀû ¼Ò¸êÀÎ NPQ´Â ´ëÁ¶±¸¿Í Àú¼±·® Á¶»ç±¸ ¸ðµÎ 70% Á¤µµ °¨¼ÒµÇ´Â °æÇâÀ» º¸¿´´Ù. ÀÌ·¯ÇÑ °á°ú¸¦ º¼ ¶§ Á¾ÀÚÀÇ Á¾ÇǸ¦ Åõ°úÇÑ Àú¼±·®ÀÇ $gamma¼±ÀÌ Âü¹ÚÀÇ »ýÀ°À» ÃËÁø½Ã۰í 4 Gy¿¡¼­ ±¤ ½ºÆ®·¹½º¿¡ ´ëÇÑ ÀúÇØ°¡ °¨¼ÒµÇ¾ú´Ù.
Gourd seeds were irradiated with the doses of 0-20 Gy to investigate the effect of the low dose $gamma$-radiation on the early growth and physiological activity. The stimulating effects of the low dose y- radiation on the early growth were not noticeably high, but were increased generally at 4-16 Gy irradiation group. The catalase and peroxidase activity of cotyledon from seeds irradiated with $gamma$- radiation were increased at 8 Gy irradiation group. The photochemical activity of leaf was noticeably high at 4 Gy irradiation group. The photochemical yield of PSII, estimated as Fv/Fm, decreased with increasing illumination time by 50% after 4 hrs in the control and 8 Gy irradiation group, while Fo slightly increased. However, Fv/Em in the 4 Gy irradiation group decreased by 40% of inhibition, indicating that photoinhibition decreased by the low dose $gamma$- radiation. Changes in the effective quantum yield of PSII, $varphi_{PSII}$ and 1/Fo- l/Fm, a measure of the rate constant of excitation trapping by the PSII reaction center, showed similar pattern to Fv/Em. NPQ decreased by 70% after photoinhibitory treatment with showing similar pattern between the control and the irradiation group. These results showed the positive effect of low dose $gamma$- radiation on the seedling growth and the reduction of photoinhibition in the 4 Gy irradiation group.
 
Ű¿öµå
Low dose $gamma$-radiation;gourd;stimulating effects;growth;photosynthesis photoinhibition;
 
ȯ°æ»ý¹° / v.20, no.3, 2002³â, pp.197-204
Çѱ¹È¯°æ»ý¹°ÇÐȸ
ISSN : 1226-9999
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200211921492698)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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