Horticulture, Environment, and Biotechnology : HEB

Korean Society of Horticultural Science (한국원예학회)
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Effects of NaCl Addition on Physiological Characteristics and Quality of Muskmelon in Hydroponics

수경 재배 시 NaCl 첨가가 머스크멜론의 생리적 특성 및 품질에 미치는 영향

Kwak, Ki-Wung;Park, Sung-Min;Jeong, Cheon-Soon
곽기웅;박성민;정천순

  • Published : 20030000
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Abstract

The effects of adding NaCl to hydroponic media on the changes of physiological characteristics and sugar content of muskmelon fruits were studies in a greenhouse. The rates of photosynthesis and stomatal conductance were higher at the early stage of NaCl treatment (after 35 to 45 days of anthesis) compared to the control, but decreased sharply at the time of harvest. No difference was found in chlorophyll contents in the control and 20 mM NaCl treated media. NaCl at 40 mM increased chlorophyll contents slightly. During the cultivation, pH was kept at 6.5 when NaCl was treated. Electrical conductivity was higher at the higher concentration of NaCl. The contents of inorganic ions, such as K, Mg, and Na, were increased by higher concentration of NaCl except Ca. Pulp firmness was decreased by adding NaCl to substrate. The accumulation of soluble solid and sugar contents was higher in NaCl treated substrate. On the contrary, the yields of muskmelon fruits sharply decreased in higher concentration of NaCl. Adding 20 to 40 mM NaCl at 30 days after anthesis can produce higher contents of sugar in the fruit of muskmelon.

머스크멜론의 재배 기간 중 양액 내 NaCl 첨가 재배가 식물체의 생리적 특성 및 과실의 품질을 향상시키기 위한 연구 결과는 다음과 같다. 광합성률 및 기공 전도도는 NaCl 처리 초기에는(개화 후 3545일) 무처리보다 다소 높게 유지되었고, 수확기에 접어들면서 유사한 수준으로 급격히 감소하였다. 엽록소 함량은 무처리 및 NaCl 20mM 처리구에서는 차이가 없었지만, 40mM 처리구에서 약간 높았다. pH는 NaCl 처리 농도 간에는 비슷한 수준으로 재배 기간 동안 pH 6.5로 유지되었지만, EC는 NaCl 농도가 높을수록 현저하게 높았다. 과실 내 무기 이온 함량은 Ca을 제외한 K, Mg 및 Na는 NaCl 농도가 높을수록 증가되는 경향을 나타냈다. 과실의 품질은 무처리 보다는 NaCl 처리구에서 경도가 낮았고, 가용성 고형물 함량 및 총당 함량이 매우 높게 축적되었지만, 수량은 NaCl 처리 농도가 높을수록 현저하게 감소하였다. 머스크멜론의 수경 재배 시 개화 후 30일경에 2040mM 범위의 NaCl을 첨가하면 고당도의 과실을 생산할 수 있다고 판단된다.

Keywords

References

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