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Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ / v.10, no.1, 2001³â, pp.36-41
Àú¿Âȯ°æÀÌ ¼ö¹ÚÀÌ ³ÃÇØ¹ß»ý°ú ÇüÅÂÀû Áõ»ó¿¡ ¹ÌÄ¡´Â ¿µÇâ
( Incidence and Visual Symptoms of Chilling Injury in Greenhouse Watermelons )
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This experiment was carried out to investigate temperature distribution in the double layer plastic greenhouse and chilling injury to watermelons grown during a cold season. Temperatures on eastern and western sides were about 6.2% and 14.7%, respectively, lower than that of central section in a south-north oriented greenhouse. Daily mean temperature in the northern part was about 1-2$^{circ}C$ higher than that in the southern part of the greenhouse. In terms of vertical temperature distribution inside the greenhouse, temperature at ground surface was approximately 1$^{circ}C$ lower during the day and 0.5$^{circ}C$ higher during the night than that in the upper part, 2m from the ground surface. Leaf mould medium kept higher ground temperatures as compared to sandy soil, red clay soil, and in the northern and southern sides as compared to the central part of the greenhouse. A symptom of chilling injury on leaves was upward curling, followed by chlorosis and necrosis. A severe symptom of chilling injury to plants was the breakdown of vascular bundles. Root growth was more susceptible than stem or leaf growth to low temperatures. At 3$0^{circ}C$, main and lateral roots grew vigorously, while lateral root growth was inhibited at 22$^{circ}C$ and root growth was stopped at 14$^{circ}C$ and 6$^{circ}C$. Small and puffy fruits with dark green surface were produced at low temperatures. In cold season cultivation of watermelons, it is suggested that plants be transplanted in the central part and train to sides of the greenhouse in order to reduced chilling injuries.
 
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»ý¹°È¯°æÁ¶ÀýÇÐȸÁö / v.10, no.1, 2001³â, pp.36-41
Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ
ISSN : 1229-4675
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200111920845761)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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