| 摘要: |
| 以2年生月季嫁接苗为试材,研究光触媒复剂对月季光合作用特性的影响。结果表明:质量分数为2.0%的光触媒对于提高温室条件下月季植株的光合作用有显著效果,在处理后的第5天净光合速率达到14 μmol/(m2·s)(CO2);不同质量分数的光触媒处理对月季叶片叶绿素含量的影响效果为2.0%>0.5%>CK>1.0%;不同质量分数的光触媒对月季叶片光系统Ⅱ(PSⅡ)的原初光能转化效率Fv/Fm和PSⅡ潜在活性Fv/Fo的影响较小,而质量分数为2.0%的光触媒能显著提高作用光下的实际PSⅡ光化学效率φPSⅡ和月季切花枝的干物质积累。 |
| 关键词: 光触媒 月季 光合作用 叶绿素荧光 干物质积累 |
| DOI：10.11841/j.issn.1007-4333.2012.03.011 |
| 投稿时间：2011-12-14 |
| 基金项目:农业部‘948’项目(2011-G17) |
|
| Effects of photocatalyst on photosynthesis improvement of rose |
|
WANG Chao, LIU Feng-luan, MA Nan, ZHAO Liang-jun
|
| (College of Agronomy and Biotechnology,China Agricultural University,Beijing 100193,China) |
| Abstract: |
| We used biennial grafted rose and studied the effects of photocatalyst on the photosynthesis of rose under greenhouse conditions.The results showed that the Pn value increased up to 14 μmol/(m2·s)(CO2) at 5th day after treatment with 2.0% photocatalyst,implying significant improvement of rose photosynthesis.The content of leaf chlorophyll in rose was in the order of 2.0%>0.5%>CK>1.0%.There was not significant difference in the ratios of Fv/Fm and Fv/Fo.However,PSⅡ efficiency (ΦPSⅡ) and the dry matter accumulation of rose cut flowers could be obviously improved at 2.0%. |
| Key words: photocatalyst rose photosynthesis chlorophyll fluorescence dry matter accumulation |
