Studies on the change of the respiratory system in roots in relation to the growth of plants V. Effect of root pruning terminal oxidase activity in roots of cereal crops :

GOPAL KRISHNA,BARAT, HIRATA,HIROSHI, KUMAZAWA,KIKUO, MITSUI,SHINGO

Studies on the change of the respiratory system in roots in relation to the growth of plants V. Effect of root pruning terminal oxidase activity in roots of cereal crops :

GOPAL KRISHNA,BARAT

Faculty of Agriculture, University of Tokyo
HIRATA,HIROSHI

Faculty of Agriculture, University of Tokyo
KUMAZAWA,KIKUO

Faculty of Agriculture, University of Tokyo
MITSUI,SHINGO

Faculty of Agriculture, University of Tokyo

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説明

This experiment studies the comparative activities of terminal oxidases (Fe-containing oxidases, Cu-containing oxidases and CN-resistant oxidases) in roots of rice and wheat seedlings and the effect of root pruning on these terminal oxidases in the roots of those crops. Data indicate that (i) excepting a change in the activity of Cu-containing oxidases no appreciable difference in respiration or in Fe-containing and CN-resistant oxidases was noticed in the two types of seedling roots and (ii) root pruning did not produce any noticeable change in terminal oxidase activities in roots of wheat seedlings. A drastic change in terminal oxidase activities in roots of rice seedlings was observed, suggesting that a close relationship exists between CN-resistant oxidase and transplanting time.