摘要
测定了甘蔗品种桂糖11号、桂糖15号和新台糖16号节间2的IAA氧化酶活性的动态变化以及乙烯利处理后的酶活性变化。结果表明:在甘蔗工艺成熟过程中,茎内IAA氧化酶酶活性的变化主要表现为先升后降的变化过程,品种间有差异。乙烯利处理对IAA氧化酶活性有影响,其影响效应及影响时间因品种而有差异,主要表现为抑制IAA氧化酶活性的早期上升过程,同时钝化IAA氧化酶对外界环境的反应,酶活性变化比对照波动性要小,影响酶活性时间约在乙烯利处理后3周以后。推测IAA氧化酶不是乙烯直接诱导的酶。
The IAA oxidase activities at internode 2 of three sugarcane cultivars Guitang 11,Guitang 15 and ROC16 (Saccharum spp. hybrid) were estimated. During the natural technical maturation period, the IAA oxidase activity of tested cultivars increased at the early time but decreased later, with some fluctuations, and this process varied with the cultivars. The increasing of IAA oxidase activity in early technical maturation period was inhibited about 3 weeks after ethephon treatment. After then the response of IAA oxidase to the environment was not obvious in about 3 weeks,compared with control. This effect and the affecting-time were various due to different cultivars. The result indicated that IAA oxidase is not a direct ethyleneinduced enzyme.
出处
《广西农业生物科学》
CAS
CSCD
2000年第1期6-9,共4页
Journal of Guangxi Agricultural and Biological Science
基金
国家自然科学基金!( 3986 0 0 39)
广西自然科学基金!(桂科自 972 1 0 1 3)
关键词
甘蔗
节间
IAA氧化酶
酶活性
乙烯利
sugarcane
internode
IAA oxidase
enzyme activity
ethephon
