不同苗龄假植对烤烟抗氧化系统酶活性的影响  

Effect of Transplanting at Different Seedling Ages on Antioxidant System Enzyme Activity of Flue-cured Tobacco

作　　者：崔晓闯 王昕[2] 陈颐[1] 张震 熊伟[1] 杨虹琦[1] 

机构地区：[1]湖南农业大学生物科学技术学院,湖南长沙410128 [2]浙江中烟工业有限责任公司,浙江杭州550009 [3]湖南省烟草公司邵阳分公司,湖南邵阳422000

出　　处：《天津农业科学》2017年第4期10-13,共4页Tianjin Agricultural Sciences

基　　金：湖南省烟草专卖局资助项目(12-14Ba17)

摘　　要：抗氧化系统能够清除植物体内活性氧,是植物提高抗逆性的主要途径,其中,抗氧化系统酶活性起着至关重要的作用。为了筛选出湖南低温寡照烟区烟苗的最适假植期,研究了不同苗龄假植对烤烟整个生育期抗氧化系统酶活性的影响。结果表明,在烤烟整个生育期,SOD,POD,CAT,APX和GR的活性变化趋势均为先升后降;烤烟SOD,CAT,POD,APX和GR的活性最高的时期为打顶期;不同苗龄假植中,5叶1心处理的烤烟抗氧化系统酶活性较高,故其抗逆性较强。Antioxidant system can remove active oxygen in plant, which is the main way for plant to improve stress resistance. And the antioxidant enzyme activity plays a crucial role. To screen out the most suitable transplanting period of tobacco seedlings in Hunan low temperature and less sunlight radiation tobacco-growing areas, this paper studied the effect of transplanting at different seedling ages on antioxidant system enzyme activity of flue-cured tobacco in the whole growing period. The results showed that the change trends of the activities of SOD, POD, CAT, APX and GR of flue-cured tobacco were ＇up-down＇ in the whole growing period. The activities of SOD, CAT, POD, APX and GR of flue-cured tobacco were the highest in the topping stage. Antioxidant system enzyme activity of flue-cured tobacco transplanted in five-leaf stage in different seedling ages was high. Therefore, the resistance of flue-cured tobacco in five-leaf stage was stronger.

关 键 词：假植 烤烟 抗氧化系统 酶活 

分 类 号：S572[农业科学—烟草工业]