Effect of flooding on nitrate reductase activities of seedling of some Indonesian local rice varieties

The aim of this study was to investigate the correlation between nitrate reductase activities (NRA) of some Indonesian local rice varieties. A completely randomized design with two water conditions (control and flooding) was used. Nitrate reductase activities (NRA) samples are collected of the age of two, three, four and five weeks. Nitrate reductase activities (NRA) measured using by spectophotometer. Data were analyzed using Duncan's Multiple Range Test. The data showed that nitrate reductase activity in Indonesian local varieties higher in conditions of unflooding (control). Nitrate reductase activity is different in each of the varieties and age of seedlings. The highest value obtained on the variety Membramo at the age 3 weeks.