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pp.226-232
착색단고추 동계재배시 주·야 온도관리방법 차이에 의한 환경변화가 생육 및 수량에 미치는 영향을 구명코자 하였다. 수량은 품종 간에는 'Fiesta'가 'Jubilee' 보다 총수량은 많았으나 상품률이 떨어져 상품수량은 차이가 없었고, 평균과중도 차이가 없었다. 품종간 총 수량 차이의 주원인은 착과수, 수확개시기 및 뿌리상태의 차이였고, 상품률 저하의 주요인은 열과발생률 차이였다. 야간온도 간에는 18℃가 15℃에 비해 총수량이 많은데다 상품률도 높아서 상품수량은 현저하게 많았으나 과중은 15℃가 다순 무거웠다. 야간온도 간의 수량차이의 주요인도 착과수와 수확개시기의 차이였다. 주간온도 간에는 28℃와 31℃는 차이가 없었으나 34℃는 이산화탄소 농도저하 및 고온다습으로 인해 영양생장이 촉진되었고, 엽록소 함량도 가장 적었다. 따라서 총수량 및 상품수량이 현저하게 적었고 평균과중도 가벼웠다. 본 시험에서 처리한 주·야 온도는 개엽의 광합성률, 증산률, 엽록소형광, 항산화효소 활성 등에 영향을 미치지 않았으나 통계적인 오차범위 내의 근소한 차이들이 어떤 식으로든 광합성능력에 영향을 미쳤을 것임은 분명하다. 주간고온에 의한 야간저온 보상효과는 없었다.
This experiment was conducted to investigate the effect of night and daytime temperatures on growth and yield of paprika 'Fiesta' and 'Jubilee' under soil culture experiment in the vinyl houses during the 2003 and 2004 season. Total fruit yield was greater in 'Fiesta' than 'Jubilee' Marketable yield was not different between two cultivars, due to lower % marketable fruits in 'Fiesta'. mean Fruit weight was not different between two cultivars. Difference of yield between cultivars was due to fruit number, harves time and root condition. It was caused by cracked fruits to decrease % marketable fruits. Total yield was greater in nighttime temperature of 18℃ than 15℃ and marketable yield was considerably greater because of % marketable fruits was higher. Mean fruit weight was slightly greater in nighttime temperature of 15℃ than 18℃. Difference of fruit yield in treatments of nighttime temperature was due to fruit number and harvest time. There was not significant difference of yield between daytime temperature of 28℃ and 31℃, but in 34℃, total and marketable yields were the least and mean fruit weight was the smallest because of decreased CO2 concentration in the house, accerated vegetative growth, and the least chlorophyll content. There were no significant difference in photosynthetic rate, transpiration rate, maximal photochemical efficiency and antioxidant enzyme activities of all temperature treatments in this experiment. However it was clear that a little difference in error range of these results affects the source of crops in any case. It was not acknowledged that compensation effect by high temperature in daytime to the low temperature treatment in nighttime.
