衰老过程中IAA氧化酶和细胞分裂素氧化酶活性的上升可能是导致内源激素含量下降的重要原因。
The increasing of IAA oxidase and cytokinin oxidase activities may play a vital role in regulating endogenous IAA and cytokinin contents during the senescence.
IAA氧化酶和细胞分裂素氧化酶活性表现为不育系高于其相应的可育系，色氨酸合成酶则是不育系低于其可育系。
The activity of IAA oxidase and cytokinin oxidase was significantly higher in CMS anther, but the activity of tryptophan synthetase was lower than in fertile anther.
以离体油菜子叶为材料，研究了营养胁迫诱导的子叶衰老过程中吲哚乙酸氧化酶（IAA氧化酶）和细胞分裂素氧化酶活性的变化。
The activities of IAA oxidase and cytokinin oxidase were studied during the senescence induced by inorganic nutrition deprivation using detached rape cotyledons.
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