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Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ / v.10, no.3, 2001³â, pp.165-171
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( Effect of Light Condition before and after Chilling Treatment on the Survival and Physiological Responses of Cucumber (Cucumis sativus L.) Seedlings ) |
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| °Ü¿ïö ½Ã¼³³»¿¡¼ Á¤Àü µîÀ¸·Î ÀÎÇÏ¿© ¼ö½Ã°£ µ¿¾È ÀÛ¹°Ã¼°¡ »ýÀ°ÇÑ°è ¿Âµµ·Î °æ°ú½Ã ¿ÀÀ̹¦¿¡ ³ªÅ¸³ª´Â ÇÇÇØ¿Í ÇÇÇØ¹ß»ýÀÇ »ý¸®Àû ¿äÀÎ ¹× ÇÇÇØ °æ°¨´ëÃ¥À» ±¸¸íÇϱâ À§ÇÏ¿© Àú¿Âó¸® ÀüÈÄÀÇ ±¤È¯°æ Á¶°ÇÀÌ ¿ÀÀÌ ¹¦ÀÇ »ýÁ¸À² ¹× »ýÀ°¹ÝÀÀ¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» Á¶»çÇÏ¿´´Ù. ³Ã¿Âó¸®(2$^{circ}C$, 48½Ã°£)¿¡ µû¸¥ ¿ÀÀ̹¦ÀÇ »ýÁ¸À²Àº ¾Ï±â¸»ÀÎ 07:00½Ã 󸮿¡¼ 30.6%À̾ú°í, ¾Ï±â °³½Ã±âÀÎ 18:00½Ã 󸮿¡¼´Â 92.2%·Î ³ô¾Ò´Ù. ¼¼Æ÷ÀÇ ÀüÇØÁú ´©ÃâÀº 07:00½Ã 󸮿¡¼(72½Ã°£) 57.1%, 18:00½Ã 󸮿¡¼´Â 25.9%·Î ³·¾Ò´Ù. ´©Ãâ¾×Áß ¹«±âÀ̿ ÇÔ·®Àº $K^{+}$ ÀÌ¿ÂÀÌ °¡Àå ¸¹¾Ò°í, $Na^{+}$, $Mg^{+2}$ , $Ca^{+2}$ ¼øÀ¸·Î Àû¾ú´Ù. ³Ã¿Âó¸®Àü ¾ß°£¿¡ ±¤À» Á¶»çÇÏ¸é »ýÁ¸À²ÀÌ ±¤ ¹«Ã³¸®¿¡ ºñÇØ 56% ´õ ³ô¾ÆÁ³À¸¸ç, ±¤Á¶»ç´Â 2½Ã°£ ó¸®·Î ÃæºÐÇÑ È¿°ú°¡ ÀÖ¾ú´Ù. ±¤ Á¶»ç¿¡ ÀÇÇÏ¿© »ýÁ¸À²ÀÌ ³ô¾ÆÁö´Â °ÍÀº ±¤ÇÕ¼º¿¡ ÀÇÇÑ ´çÇÔ·®ÀÇ Áõ°¡ ¶§¹®ÀÎ °ÍÀ¸·Î ÇØ¼® µÇ¾ú´Ù. ³Ã¿Âó¸®(3$^{circ}C$, 48½Ã°£) ±â°£Áß ±¤À» Á¶»çÇϸé, »ýÁ¸À²ÀÌ 43.3%·Î ³·¾ÆÁø ¹Ý¸é, ¾ÏÁ¶°Ç¿¡µÎ¸é 92%·Î ³ô¾Ò´Ù. |
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| This study was conducted to investigate the influence of light condition before and after chilling treatment started at different times of a day on the survival and physiological responses of cucumber seedlings grown in a greenhouse. Percent survival of cucumber seedling exposed to a chilling temperature of 2$^{circ}C$ for 48 hours varied considerably depending upon the initiation time of chilling treatment. Seedlings exposed to chilling treatment from 7:00 o clock, the end of a dark period, showed considerably lower % survival of 30.6% as compared to 90.2% in those exposed to the same treatment starting from 18:00 o clock, the end of a photoperiod. This difference in % survival was found to be closely associated with content of photosynthetic assimilates in seedlings. Relative amount of electrolyte leakage was 57.1% in seedlings chilled from 7:00 o clock and 25.9% in seedlings chilled from 18:00 o clock. Among the ions found in the electrolyte leakage, content of $K^{+}$ was the greatest, followed by that of N $a^{+}$, $Mg^{+}$ and $Ca^{+2}$. Light illumination for 2 hours or longer shortly before chilling treatment during the dark period was effective in increasing % survival of seedlings, probably because of increased photosynthetic assimilates in seedlings. Light illumination during a 48 hour chilling treatment at 3$^{circ}C$ significantly reduced % survival to 43.3% as compared to 92.0% in seedlings kept continuously in darkness.ess.s. |
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| greenhouse;survival rate;cucumber;chilling; |
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»ý¹°È¯°æÁ¶ÀýÇÐȸÁö / v.10, no.3, 2001³â, pp.165-171
Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ
ISSN : 1229-4675
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200111920845116)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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