摘要
[目的]比较4种蔷薇科园林植物叶片色素含量及光合功能特征。[方法]以蔷薇科4种代表植物樱花、樱桃、紫叶李和红叶樱花为研究对象,比较其叶片色素含量、光合速率和荧光参数间的差异,分析彩叶树的光合特征。[结果]红叶樱花和紫叶李叶片的花青苷和类胡萝卜素含量显著大于樱花和樱桃,而叶绿素含量显著小于樱花和樱桃。相关性分析表明,Chla和Chlb含量与花青苷含量呈极显著负相关。4种植物的光合速率均为典型的双峰曲线,红叶樱花和紫叶李的光补偿点高于樱花和樱桃的光补偿点。红叶樱花和紫叶李的第一光合高峰较樱花和樱桃要推迟0.5~1.0 h,其光合午休也相对平稳。4种植物间的热耗散能力差异显著,其中红叶樱花热耗散能力最强,紫叶李次之,说明红叶樱花具有较好的抗高温能力,但光能利用率较差。[结论]该研究可为彩叶植物在生产中的实际应用提供理论指导。
[Objective]Pigment content and photosynthetic function of four species of Rosaceae plants were compared. [Method]With four species of Rosaceae plants including Prunus serrulata,Prunus serrulata Lindl‘Royal Burgundy’,Prunus ceraifera var. atropurea,Prunus pseudocerasus as study objects,leaf pigment content,photosynthetic rate and fluorescence difference were compared,colorful tree photosynthesis characteristics were analyzed. [Result] The results showed that the content of anthocynin and carotenoid of‘Royal Burgundy’and Prunus ceraifera var. atropurea were significantly larger than Prunus serrulata and Prunus pseudocerasus,but their chlorophyll contents were less than them. Correlation analysis showed the content of Chla,Chlb and anthocyanin content was significantly negatively correlated. Photosynthetic rate of four plants were typical bimodal curve,and the light compensation point of Prunus serrulata Lindl‘Royal Burgundy’and Prunus ceraifera var. atropurea was above the light compensation point of Prunus serrulata and Prunus pseudocerasus. The first photosynthetic peak of Prunus serrulata Lindl‘Royal Burgundy’and Prunus ceraifera var. atropurea were delayed 0. 5- 1. 0 h than Prunus serrulata and Prunus pseudocerasus,and midday depression of photosynthetics rate were also relatively stable. NPQ difference between the four plants was significant,NPQ of Prunus serrulata Lindl‘Royal Burgundy’was the strongest,followed Prunus ceraifera var. atropurea,it indicated that Prunus serrulata Lindl‘Royal Burgundy’possess strong resistance to high temperature capability,but its LUE is poor. [Conclusion]The study can provide theoretical guidance for application of Rosaceae plants in production.
出处
《安徽农业科学》
CAS
2016年第20期14-17,157,共5页
Journal of Anhui Agricultural Sciences
基金
山东省农业科学院青年科研基金项目(2016YQN31)
山东省果树研究所所长基金项目(2016KY09)
山东省农业良种工程项目
关键词
蔷薇科
叶片色素
光合作用
荧光参数
Rosaceae
Pigment
Photosynthesis
Fluorescence parameters
