The Korean Journal of Ecology

The Ecological Society of Korea (한국생태학회)
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An Application of a Plastochron Index for Nitrate Reductase Activity in Amaranthus retroflexus, Chenopodium album var. centrorubrum and Glycine max

털비름(Amaranthus retroflexus), 명아주(Chenopodium album var. centrorubrum) 및 콩(Glycine max)의 질산환원효소 활성의 측정을 위한 Plastochron index

  • Park, Bong-Kyu (Dept. of Biology, College of Natural Science, Kyung Nam University) ;
  • Joung-Hee Kim (Dept. of Biology, College of Natural Science, Kyung Nam University)
  • Published : 1986.02.01
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Abstract

plastochron index was used as a measure for the nitrate reductase activity (NRA) in Amaranthus retroflexus, Chenopodium album var. centrorubrum and Glycine max. The material plants treated with $NO_3$-N had higher NRA than those treated with ${NH_4}^+$-N. High NRA were found in young tissues which have low PI or LPI in both A. retroflexus and C. album. These results indicated that this enzyme decreased with increasing plastochron index of the extracted tissues. High level of NRA was detected in Glycine max leaves at PI 4.0. On the other hand, there were no significant differences for PI among $NO_3$-treated, ${NH_4}^+$-treated and control in both stems and roots.

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