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2009•Journal of Changjiang VegetablesRequires access

Changes in Carbon-nitrogen Metabolism Indices of Kidney Bean Leaves during Leaf Senescence

Shuyao Song

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Abstract

Changes in carbon-nitrogen metabolism indices in kidney bean leaves during leaf senescence were studied in Meiguogongdou and Hacaidou No.6. The main results were as follows: during the process of leaf growth and senescence, total N content decreased gradually. But changes in many nitrogen metabolism indices such as nitrate reductase (NR) activity, chlorophyll, soluble protein (Pr), carbohydrate and free amino acid content in leaves, altered like a parabola, and the maxima all appeared on the fourteenth day after leaf unfolding.

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What this paper is about

Changes in carbon-nitrogen metabolism indices in kidney bean leaves during leaf senescence were studied in Meiguogongdou and Hacaidou No.6. The main results were as follows: during the process of leaf growth and senescence, total N content decreased gradually. But changes in many nitrogen metabolism indices such as nitrate reductase (NR) activity, chlorophyll, soluble protein (Pr), carbohydrate and free amino acid content in leaves, altered like a parabola, and the maxima all appeared on the fourteenth day after leaf unfolding.

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Available abstract

Changes in carbon-nitrogen metabolism indices in kidney bean leaves during leaf senescence were studied in Meiguogongdou and Hacaidou No.6. The main results were as follows: during the process of leaf growth and senescence, total N content decreased gradually. But changes in many nitrogen metabolism indices such as nitrate reductase (NR) activity, chlorophyll, soluble protein (Pr), carbohydrate and free amino acid content in leaves, altered like a parabola, and the maxima all appeared on the fourteenth day after leaf unfolding.

Key concepts: Senescence, Nitrate reductase, Metabolism, Chlorophyll, Nitrogen, Nitrogen cycle, Botany, Nitrate

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