Effect of nitrogen level under low temperature condition on growth characters, nitrogen concentration and ethylene evolution of rice varieties
1987
Lee, J.H. (Korea Air and Correspondence Univ., Seoul (Korea R.)) | Lee, M.H. (Rural Development Administration, Suwon (Korea R.). Crops Experiment Station)
This experiment was carried out to determine the effect of nitrogen application on the cold tolerance of rice plant, with treatment of three levels of nitrogen and three times of application under the low temperature at tillering and panicle initation stages. The higher cold tolerance variety was increased in plant height and number of tillers on high nitrogen level during the low temperature treatment. Nitrogen content of leaf blade was increased, but carbohydrate content was decreased during the low temperature treatment at tillering stage. Ethylene evolution from leaf was remarkably increase1190d just after low temperature treatment. Highly significant negative correlation was observed between the nitrogen content of leaf blade and percentage of filled grain under low temperature condition at reproductive growth s
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