Journal of Aquaculture (한국양식학회지)

The Korean Society of Fisheries and Aquatic Science (한국양식학회)
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Comparative Photosynthetic Physiology of Fronds and Cultivated Filaments of Porphyra pseudolinearis Ueda

한국산 긴잎돌김 (Porphyra pseudolinearis Ueda)의 엽상체와 배양 사상체의 광합성 비교

  • KIM Hyung-Geun (Department of Fisheries Resources Development, Kangnung National University) ;
  • CHU Su-Dong (Natural Science office, Ministry of Education) ;
  • JUN Bang-Ook (Department of Biology, Kangnung National University)
  • 김형근 (강릉대학교 수산자원개발학과) ;
  • 주수동 (교육부 자원과학 편수관실) ;
  • 전방욱 (강릉대학교 생물학과)
  • Published : 1994.02.01
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Abstract

The effects of temperature and light intensity on the photosynthesis were investigated in fronds and cultivated filaments of Porphyra pseudolinearis Ueda. The optimum temperatures for total photosynthesis of fronds and filaments were $25\~30^{\circ}C\;and\;20^{\circ}C$, respectively. The photosynthetic rates of fronds and filaments based on light intensity were shown in a typical light saturation curve where the rates were constant over the light intensity of approximately 10,000 lux. The compensation points were 2,100 lux in fronds and 900 lux in filaments. The photosynthetic rate of filaments was 5 to 10 times greater than that of fronds. This would be very advantageous for filaments to conduct photosynthesis in the condition of dim light.

긴잎돌김 (Porphyra pscudolineris Ueda)의 엽상체와 배양 사상체에 미치는 온도와 광도의 영향을 구명하였다. 엽상체와 사상체의 총 광합성의 적정 온도는 각각 $25\~30^{\circ}C$, $20^{\circ}C$로 나타났다. 엽상체와 사상체에서 광도에 따른 광합성율은 공히 10,000 lux 이상에서 광합성율이 일정한 값에 도달하는 광포화 곡선을 나타내었다. 엽상체의 광 보상점은 2,100 lux, 사상체의 광 보강점은 900 lux였으며, 사상체의 광합성능은 엽상체의 5-10배에 해당하였다. 이로써 사상체는 낮은 광도하에서도 광합성을 수행할 수 있음을 알 수 있다.

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