• Title/Summary/Keyword: Wasabiajaponica Matsum

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Effect of Temperature, Light Intensity and $CO_2$ Concentration on Photosynthesis and Respiration of Wasabia japonica Matsum (온도(溫度), 광도(光度) 및 $CO_2$의 농도(濃度)가 고추냉이의 광합성(光合成)과 호흡(呼吸)에 미치는 영향(影響))

  • Choi, Sun-Young;Lee, Kang-Soo;Eun, Jong-Seon
    • Korean Journal of Medicinal Crop Science
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    • v.3 no.3
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    • pp.181-186
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    • 1995
  • This study was carried out to know the effect of temperature, light intensity and $CO_2$ con­centration on photosynthesis and respiration in Wasabi (Wasabia japonica Matsum). The optimum temperature for photosynthesis in Wasabi was $17{\sim}20^{\circ}C$ and dark respiration rate was increased with the increasing of tem­perature from, $15 ^{\circ}C\;to\;30^{\circ}C$. Light compensation point was $6.0\;{\mu}E\;m^{-2}s^{-1}$ in Wasabi and $36.7\;{\mu}E\;m^{-2}s^{-1}$ in Corn, and light saturation point was $600{\mu}E\;m^{-2}s^{-1}$, similar in Wasabi and Corn. $CO_2$, compensation point was 67.3ppm in Wasabi and 11.6 ppm in Corn. Photorespiration rate in Wasabi leaf at $l000{\mu}E\;m^{-2}s^{-1}$ light intensity was 3.3 mg$CO_2$, $dm^{-2}hr^{-1}$, and then was gradually decreased as light intensity decreased. Stomatal frequency was about $76\;mm^{-2}$ on the adaxial surface and $623\;mm^{-2}$ on the abaxial surface, and the size of stomata was about 1$12{\mu}m$ on the adaxial surface and $17{\mu}m$ on the abaxial surface of the leaf.

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