| He-Ne激光和增强UV-B辐射对小麦幼苗叶绿素荧光特性的影响 |
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| 引用本文： | 常阿丽,韩榕.He-Ne激光和增强UV-B辐射对小麦幼苗叶绿素荧光特性的影响[J].激光生物学报,2012,21(5):399-405. |
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| 作者姓名： | 常阿丽 韩榕 |
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| 作者单位： | 山西师范大学生命科学学院,山西临汾041004 |
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| 基金项目： | 国家自然科学基金资助项目（30671061）;山西省自然科学基金资助项目（20081101） |
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| 摘 要： | 选用"ML7113"小麦幼苗为材料,分别采用He-Ne激光(5mW·mm-2)和增强UV-B(10.8 kJ/m-2·d-1)辐射以及两者的复合辐照进行处理,利用PAM-2100便携式叶绿素荧光仪测定小麦幼苗在不同处理天数(5、6、7、8)下叶绿素荧光特性的变化。结果表明:增强UV-B辐射后,随着处理时间的延长,小麦幼苗的Fo、Fm、Fv/Fm、qP、ФPSⅡ、叶绿素含量的值均逐渐下降,qN值均逐渐升高,从而不断减弱小麦幼苗的叶绿体荧光特性;而低剂量的He-Ne激光辐照后能够在一定程度上修复经UV-B辐射后对小麦幼苗叶绿素荧光所造成的损伤。
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| 关 键 词： | He-Ne激光 UV-B辐射 小麦 叶绿素荧光 |
Effects of He-Ne Laser and UV-B Irradiation Enhancement on Wheat Seedling Chlorophyll Fluorescence Characteristic |
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| CHANG Ali,HAN Rong.Effects of He-Ne Laser and UV-B Irradiation Enhancement on Wheat Seedling Chlorophyll Fluorescence Characteristic[J].ACTA Laser Biology Sinica,2012,21(5):399-405. |
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| Authors: | CHANG Ali HAN Rong |
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| Institution: | ( College of Life Seienee, Shanxi Normal University, Linfen 041004, Shanxi, China) |
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| Abstract: | Through the influence of the laser irradiation of 5 mW . mm-2 He-Ne, 10.08 kJ . mEd-1 UV-B and the com- bination of the two on the seeding of wheat＂ ML7113＂ , Using PAM-2100 portable chlorophyll fluorescence analyzer to measure the change of wheat chlorophyll fluorescence characteristics under different treatment days（ 5,6,7,8 ）. The re- sults showed that： After enhance UV-B radiation, with the treatment time, the values of wheat seedlings Fo, Fm and Fv/ Fm, qP, ФbPSⅡ, the chlorophyll content were gradually decreased, qN gradually increased,thereby the chloroplast fluo- rescence characteristics of wheat seedlings continuously weakened. However,the certain dose of He-Ne laser irradiation could partly repair these damages induced by enhanced UV-B radiation. |
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| Keywords: | He-Ne laser UV-B irradiation wheat chlorophyll fluorescence |
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