Effects of illumination,carbon source and reducing power on N2O emission from maize and soybean seedlings

Abstract

Abstract: The closed chamber measurement of N₂O emission from soybean and maize seedlings showed that there were two peaks (10:30 and 14:30) of N₂O flux at the daytime.There was a correlation between N₂O emission and illumination.The variation of illumination had a significant influence on N₂O flux from soybean and maize seedlings.There was a positive correlation between N₂O emission and illumination when the illumination was below 11 345 Lx (for soybean,R² = 0.7332) or 2 000 Lx (for maize,R² =0.8711),and a negative correlation when the illumination was over 11 345 Lx (for soybean,R² = 0.7755) or 20 000 Lx (for maize,R² =0.8972).Addition of carbon source (glucose) and NADH (reducing power) decreased N₂O flux.

Key words: Soybean, Maize, Seedlings, N₂O emission, Illumination, Carbon source, NADH (reducing power)

CLC Number:

Q945.1

LI Yueying, YANG Yu, ZHANG Xudong, CHEN Guanxiong. Effects of illumination,carbon source and reducing power on N₂O emission from maize and soybean seedlings[J]. Chinese Journal of Applied Ecology, 2004, (10): 1851-1854.

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Effects of illumination,carbon source and reducing power on N₂O emission from maize and soybean seedlings

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