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Çѱ¹È¯°æ»ý¹°ÇÐȸ / v.17, no.3, 1999³â, pp.331-335
ÀÚÁÖ´Þ°³ºñ ¼ö¼úÅп¡¼­ ¹æ»ç¼±¿¡ ÀÇÇØ À¯¹ßµÇ´Â ºÐÈ«µ¹¿¬º¯ÀÌ¿¡ ´ëÇÑ ±¤ÁÖ±âÀÇ ¿µÇâ
( Effect of Photoperiod on Radiation-Induced Pink Mutations in Tradescantia Stamen Hairs )
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±¤ÁֱⰡ ¹æ»ç¼±¿¡ ÀÇÇØ À¯¹ßµÈ ÀÚÁÖ´Þ°³ºñ ü¼¼Æ÷µ¹¿¬º¯ÀÌ¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» ½ÇÇèÀûÀ¸·Î Æò°¡ÇÏ¿´´Ù. Æ÷Æ®¿¡¼­ »ýÀ°µÈ Tradescantia 4430 ½Ä¹°Ã¼¿¡ ÄÚ¹ßÆ® ¼±¿øÀ¸·ÎºÎÅÍ 0.3, 0.5¹× 1.0GyÀÇ °¨¸¶¼±À» Á¶»çÇÏ¿´À¸¸ç ¼ö¼úÅÐ ¼¼Æ÷¿¡ ³ªÅ¸³ª´Â ºÐÈ«µ¹¿¬º¯À̸¦ ºÐ¼®ÇÏ¿´´Ù. °¨¸¶¼± 0.5 Gy¸¦ ±âÁؼ±·®À¸·Î Æò°¡ÇÏ¿´À» ¶§ ´ëÁ¶ ½ÇÇ豺(CT)Àº ¹æ»ç¼± Á¶»ç ÈÄ 6ÀÏ °æ°ú½ÃºÎÅÍ µ¹¿¬º¯ÀÌÀ²ÀÌ Áõ°¡Çϱ⠽ÃÀÛÇÏ¿© Á¶»ç ÈÄ 10Àϰ¿¡ ÃÖ°í°ª¿¡ µµ´ÞÇÏ¿´´Ù. ¸í±â°¡ 20½Ã°£ÀÎ ½ÇÇ豺(PP20)¿¡¼­´Â ¹æ»ç¼± Á¶»ç ÈÄ 6ÀÏ °æ°ú½ÃºÎÅÍ µ¹¿¬º¯ÀÌÀ²ÀÌ Áõ°¡Çϱ⠽ÃÀÛÇÏ¿© Á¶»ç ÈÄ 9Àϰ¿¡ ÃÖ°í°ª¿¡ À̸£·¶´Ù. ¹Ý¸é¿¡ ¸í±â°¡ 4½Ã°£À¸·Î Á¦ÇÑµÈ ½ÇÇ豺(PP4)¿¡ À־´Â Á¶»ç ÈÄ 10ÀϰºÎÅÍ µ¹¿¬º¯ÀÌÀ²ÀÌ ±Þ°ÝÈ÷ Áõ°¡Çϱ⠽ÃÀÛÇÏ¿© 16ÀÏ °æ°ú½Ã ÃÖ°í°ª¿¡ µµ´ÞÇÏ¿´´Ù. CT½ÇÇ豺¿¡ À־ °¨¸¶¼± Á¶»ç¿¡ ÀÇÇÏ¿© À¯¹ßµÇ´Â ºÐÈ«µ¹¿¬º¯ÀÌ ºóµµÀÇ Áõ°¡°è¼ö 5.99($r^2$=0.99)¿¡ ºñÇØ PP20°ú PP4 ½ÇÇ豺¿¡ À־ÀÇ °¢°¢ÀÇ µ¹¿¬º¯ÀÌ ºóµµ Áõ°¡°è¼ö´Â 6.93 ($r^2$=0.98)°ú 11.74($r^2$=0.99)·Î PP20 ½ÇÇ豺¿¡ À־´Â 15.7%, PP4 ½ÇÇ豺Àº 95.9%ÀÇ Áõ°¡ È¿°ú¸¦ ³ªÅ¸³»¾ú´Ù. °á·ÐÀûÀ¸·Î ºñÁ¤»óÀûÀÎ ±¤ÁÖ±â´Â ÀÚÁÖ´Þ°³ºñ ¼ö¼úÅп¡ ´ëÇÑ ÀÌ¿ÂÈ­ ¹æ»ç¼±ÀÇ ºÐÈ«µ¹¿¬º¯ÀÌ À¯¹ßÈ¿°ú¸¦ Áõ°¡½ÃŰ´Â µ¿½Ã¿¡ ¹æ»ç¼±¿¡ ÀÇÇÑ ¼¼Æ÷ À¯ÀüÀÚ ¼Õ»óÀÇ È¸º¹À» »ó´ç±â°£ Áö¿¬½ÃŰ´Â ¿øÀÎÀÌ µÈ´Ù.
The present study was carried out to investigate the combined effect of radiation and photoperiod (PP) regimes on Tradescantia 4430 somatic cell mutations. Potted plants were irradiated with 0.3, 0.5 and 1.0 Gy of gamma radiation from 60Co source. The plants irradiated only with gamma radiation were used as control group (CT). The somatic cell mutation rate in 0.5 Gy irradiated CT and PP20 group started to increase on the 6th day and reached a maximum value on the l0th day and 9th day after irradiation while the rate in the experimental group under 4 hours of photoperiod a day (PP4) started to increase on the l0th day and reached a maximal value on the 16th day post-irradiation. The slope of dose-response curve in CT was 5.99 ($r^2$=0.99), while it was 6.93 ($r^2$=0.98) in PP20 and 11.74 ($r^2$=0.99) in PP4, respectively. The biological efficacy of radiation in the induction of pink mutation increased by 15.7% in PP20 and 95.9 % in PP4, respectively. It is suggested that photoperiod regimes unfavorable to the plant have an additive effect on radiation-induced mutations and a delaying or inhibiting effect on cell damage repair, as well.
 
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photoperiod;pink mutation;radiation;Tradescantia;
 
ȯ°æ»ý¹° / v.17, no.3, 1999³â, pp.331-335
Çѱ¹È¯°æ»ý¹°ÇÐȸ
ISSN : 1226-9999
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199911921494872)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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