甜菜当年抽薹过程中呼吸酶活性的变化

The variation of the activity in respiratory enzyme of first year bloting sugar beet

通过温光条件诱导甜菜 (Beta vulgaris L.)当年抽薹 ,测定了甜菜幼苗在抽薹过程中体内呼吸酶的变化 :抗坏血酶氧化酶、细胞色素氧化酶活性在低温春化后较高 ,以后随着抽薹、开花的进行活性逐渐降低 ;多酚氧化酶活性相反 ,在抽薹前 ,活性较低 ,抽薹后 ,活性逐渐增强。

The activity of respiratory enzyme such as ascordic acid oxidase,cytochrome oxidase and polyphenol oxidase of first year bloting sugur beet has been determined in this experiment.The results obtained suggest that the activity of ascordic acid oxidase and cytochrome oxidase increase after vernalization and then decrese afterward.On the contrary the activity of polyphenol oxidase was low before bloting but increase after bloting.$$$$