Seasonal Changes of Amylase and Nitrate Reductase Activities in Zoysia japonica Steud.

한국잔디(Zoysia japonica Steud.)에 있어서 Amylase와 Nitrate reductase 활성도의 계절적 변동에 관한 연구

This study was carried out to elucidate the seasonal changes of amylase an nitrate reductase activities in Zoysia japonica Steud. The seasonal changes of the amylase activity AA) in aboveground parts appeared high activity from the beginning of May to the beginning of July and in autumn showed an activity of rapid decreasing tendency. But, the AA in winter(Nov. 15~Feb 28 was not almost detected. The seasonal changes of nitrate reductase activity(NRA) in various organs appeared a very similar figures to the seasonal changes of AA. But, the NRA in the root was not almost detected.