| 增强UV-B辐射对喜树幼苗生物量和两种生物碱含量的影响 |
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| 引用本文： | 王海霞,刘文哲.增强UV-B辐射对喜树幼苗生物量和两种生物碱含量的影响[J].武汉植物学研究,2011,29(6):712-717. |
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| 作者姓名： | 王海霞 刘文哲 |
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| 作者单位： | 1. 青岛农业大学,青岛,266109
2. 西北大学生命科学学院,西安,710069 |
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| 摘 要： | 通过盆栽试验,以自然辐射为对照,研究人工增强UV-B辐射下(5.0 μW/cm2)喜树幼苗生物量和各器官中喜树碱、10-羟基喜树碱含量的变化,试验结果表明:(1 )UV-B辐射处理前20d,处理组幼苗的全株以及各器官的鲜重与对照相差很少.至辐射处理的40d,处理组幼苗的全株以及各器官的生物量均高于正常条件的幼苗.试验后期,处理组单株生物量降低,长时间的UV-B辐射使喜树植株矮化、基茎加粗,同时还改变了喜树生长过程中干物质的分配,较多的干物质分配到喜树的茎和根中,而较少进入叶中；(2)UV-B辐射增强能明显增加喜树地上器官中喜树碱的含量,而对10-羟基喜树碱含量影响不明显.(3)各器官中生物碱含量与生物量的积累速率具有一定的相关性,生物量增长过快时单位质量植物体中的生物碱含量下降.
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| 关 键 词： | 喜树 UV-B辐射增强 生物量 生物碱含量 |
Effects of Enhanced UV-B Radiation on Biomass and Contents of Camptothecin and 10-hydroxy-camptothecin in Camptotheca acuminata |
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| WANG Hai-Xia
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LIU Wen-Zhe.Effects of Enhanced UV-B Radiation on Biomass and Contents of Camptothecin and 10-hydroxy-camptothecin in Camptotheca acuminata[J].Journal of Wuhan Botanical Research,2011,29(6):712-717. |
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| Authors: | WANG Hai-Xia LIU Wen-Zhe |
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| Institution: | WANG Hai-Xia1,LIU Wen-Zhe2*(1.College of Life Science,Qingdao Agriculture University,Qingdao 266109,China,2.College of Life Science,Northwest University,Xi' an 710069,China) |
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| Abstract: | The effects of enhanced UV-B radiation on biomass and contents of camptothecin and 10-hydroxy-camptothecin in Camptotheca acuminata were investigated in a pots experiment.The results showed that:(1) Comparing to the control group,the fresh weight of C.acuminata seedlings and of the various organs did not change significantly in the first 20 days after treatment.After 40 days,however,the biomass of the whole plant and the various organs was higher than in the untreated plants.Finally,the biomasses per plant ... |
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| Keywords: | Camptotheca acuminata Enhanced UV-B radiation Biomass Distribution of camptothecin and 10-hydroxy-camptothecin |
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