CAJ | 학술논문

以中国科学院海北高寒草甸生态系统定位研究站地区的美丽风毛菊为材料,通过短期增补UV-B辐射的模拟试验,研究了叶片光合色素和紫外吸收物质含量对增强UV-B的响应.不同处理天数的取样分析表明,与对照UV-A相比,增补UV-B＋UV-A处理时光合色素有增高的趋势,紫外吸收物质含量也略有增高.说明高山植物叶片中丰富的黄酮类物质能有效保护光合机构,短期内UV-B辐射强度的增加所加剧的色素光氧化现象并不严重,受叶片增厚的影响单位叶片面积的光合色素含量有增加趋势.
이중국과학원해북고한초전생태계통정위연구참지구적미려풍모국위재료,통과단기증보UV-B복사적모의시험,연구료협편광합색소화자외흡수물질함량대증강UV-B적향응.불동처리천수적취양분석표명,여대조UV-A상비,증보UV-B＋UV-A처리시광합색소유증고적추세,자외흡수물질함량야략유증고.설명고산식물협편중봉부적황동류물질능유효보호광합궤구,단기내UV-B복사강도적증가소가극적색소광양화현상병불엄중,수협편증후적영향단위협편면적적광합색소함량유증가추세.
The short--term field experiments of UV--B supplementation studying were conducted with alpine plant Saussurea superba in Haibei Alpine Meadow Ecosystem Research Station area. The photosyn-thetic pigments and UV--B absorbing compounds were measured after 5, 10 and 15 days of treatment. The results indicated that compared with control UV--A treatment, there were an increasing of the photosynthetic pigments after enhancement of UV--B radiation （UV--B＋UV--A） treatment, and UV--B absorbing compounds were also having small increasing trend. These means that high contents of UV--B absorbing compounds could provide effective protection on photosynthetic function in alpine plants, and shortterm of UV-- B supplement have no additional photo-- oxidation on photosynthetic pigments. Benefited with increase of leave thickness, there was an increased trend of the photosynthetic pigments contents when based on leave area.