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Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ / v.8, no.1, 1999³â, pp.42-48
¹è¾ç¾×³» Ca : K ºñÀ²ÀÌ »óÃßÀÇ ±¤ÇÕ¼º, Áõ»ê, »ýÀ° ¹× tipburn ¹ß»ý¿¡ ¹ÌÄ¡´Â ¿µÇâ
( Effects of Ca : K Ratios in Nutrient Solution on Photosynthesis, Transpiration, Growth and Incidence of Tipburn in Butterhead and Leaf Lettuce. )
¹èÁ¾Çâ;ÀÌ¿ë¹ü;Ãֱ⿵; ¿ø±¤´ëÇб³ »ý¸íÀÚ¿ø°úÇдëÇÐ;¼­¿ï½Ã¸³´ëÇб³ ȯ°æ¿ø¿¹Çаú;¼­¿ï½Ã¸³´ëÇб³ ȯ°æ¿ø¿¹Çаú;
 
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¹Ý°á±¸ »óÃß ¡®Omega¡¯¿Í ÀÙ»óÃß ¡®Grand Rapids¡¯ÀÇ m Àç¹è¿¡¼­ ¹è¾ç¾×³» Ca : K ºñÀ²ÀÌ ±¤ÇÕ¼º, Áõ»ê, »ýÀ° ¹× tipburn ¹ß»ý¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» ¹àÈ÷°íÀÚ ½ÇÇèÀ» ¼öÇàÇÏ¿´´Ù. ¹Ý°á±¸ »óÃß¿Í ÀÙ»óÃß µÎ Á¾ ¸ðµÎ ±¤ÇÕ¼ºÀº Ca : K ºñÀ² 3:6°ú 4.5:4.5¿¡¼­ ³ô¾ÒÀ¸¸ç, ±â°ø ÀúÇ×Àº ÀÙ»óÃß°¡ ¹Ý°á±¸ »óÃߺ¸´Ù ³·¾Ò´Ù. Áõ»êÀ²Àº 3:6ÀÇ Ca : K ºñÀ²¿¡¼­ µÎ Á¾ ¸ðµÎ °¡Àå ³ô¾ÒÀ¸¸ç, ÀÙ»óÃßÀÇ Áõ»êÀ²ÀÌ ¹Ý°á±¸ »óÃߺ¸´Ù ³ô¾Æ Á¾°£ Â÷À̸¦ º¸¿´´Ù. ¿±À§¿¡ µû¸¥ Áõ»êÀ²Àº ¿ÏÀü Àü°³ÀÙ¿¡ ºñÇØ ¹Ì¼÷ÀÙ¿¡¼­ ³·¾Ò´Âµ¥, À̰ÍÀº ¹Ì¼÷ÀÙ¿¡¼­ tipburn ¹ß»ýÀÌ ¸¹Àº °Í°ú ±íÀº °ü°è°¡ ÀÖ´Â °ÍÀ¸·Î º¸¿´´Ù. Ca °áÇ̱¸ÀÎ Ca : K ºñÀ² 0:9󸮴 µÎ Á¾ ¸ðµÎ ±Ø´ÜÀûÀÎ »ýÀ° ÀúÇÏ¿Í ÇÔ²² tipburnÀÌ 100% ¹ß»ýÇÏ¿´À¸¸ç, ¹Ý°á±¸ »óÃß´Â Ca : K 1.5:7.5 󸮿¡¼­µµ tipburnÀÌ 25% ¹ß»ýÇÏ¿´À¸³ª, ÀÙ»óÃß¿¡¼­´Â ³ªÅ¸³ªÁö ¾Ê¾Ò´Ù ÀÛ¹° »ýÀ°Àº Ca °áÇ̱¸¸¦ Á¦¿ÜÇÑ µÎ Á¾ ¸ðµÎ Ca : K 3:6 󸮿¡¼­ °¡Àå ³ô¾Ò´Ù. ¹è¾ç¾×ÀÇ Ca°ú KÀÇ ºÒ±ÕÇüÀº ±â°øÀúÇ×°ú È®»êÀúÇ×À» ³ô¿© ±¤ÇÕ¼º°ú Áõ»êÀÇ °¨¼Ò¸¦ À¯µµÇÔÀ¸·Î½á Ca À̵¿¿¡ ¿µÇâÀ» ¹ÌÄ£ °ÍÀ¸·Î º¸¿´´Ù.
This study was executed to see the effects of Ca : K ratios in me.L$^{-1}$ -0:9, 1.5:7.5, 3:6, 4.5:4.5, 6:3 - in the nutrient solution on the photosynthesis, transpiration, growth and incidence of tipburn in butterhead ¡®Omega¡¯and Leaf ¡®Grand Rapids¡¯lettuce (Lactuca sativa. L) grown in nutrient film technique(NFT). The photosynthesis of both lettuces showed high in the Ca : K ratios of 3:6 and 4.5:4.5 regardless of species. But stomatal resistance of Grand Rapids was higher than that of Omega. The highest transpiration rate of them was shown in the Ca : K ratio of 3:6. The transpiration rate of developing leaves was lower than that of expanded leaves. It was seemed to have relation with incidence of tipbum in the developing leaves. The nutrient solution treatment without Ca developed less growth than that of other treatments, especially growth and development of apical part were inhibited, so that in the both of them incidence of tipburn appeared 100 percent. The incidence of tipburn in Omega appeared 25 percent in the Ca/K ratio of 1.5:7.5, but Grand Rapids did not show it according to the Ca/K ratio in nutrient solution. The highest growth in two species was also shown in the Ca/K ratio of 3:6 except nutrient solution without Ca. This study suggested that the unbalanced ratio of Ca/K affected Ca transport in two species because of the increase of stomatal resistance and diffusive resistance and the decrease of photosynthesis and transpiration.
 
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»óÃß;Ä®½· À̵¿;±â°øÀúÇ×;È®»êÀúÇ×;Lactuca sativa L;Ca transport;stomatal resistance;diffusive resistance;
 
»ý¹°È¯°æÁ¶ÀýÇÐȸÁö / v.8, no.1, 1999³â, pp.42-48
Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ
ISSN : 1229-4675
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199911922406465)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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