欢迎访问林业科学,今天是

林业科学 ›› 2007, Vol. 43 ›› Issue (06): 32-37.doi: 10.11707/j.1001-7488.20070606

• 论文及研究报告 • 上一篇    下一篇

桃、李属红叶树种叶片光合特性

王庆菊 李晓磊 王磊 陈学森 沈向   

  1. 山东农业大学园艺科学与工程学院,泰安271018
  • 收稿日期:2006-05-25 修回日期:1900-01-01 出版日期:2007-06-25 发布日期:2007-06-25

Photosynthetic Characteristics of Red-Leaf Tree Species in Amygdalus and Prunus

Wang Qingju,Li Xiaolei,Wang Lei,Chen Xuesen,Shen Xiang   

  1. College of Horticulture Science and Engineering, Shandong Agricultural University Tai'an 271018
  • Received:2006-05-25 Revised:1900-01-01 Online:2007-06-25 Published:2007-06-25

摘要:

以紫叶桃、紫叶李、美人梅及紫叶矮樱4种红叶树种为试材,油蟠桃和玉皇李2种绿叶树种为对照,测定其色素含量、反射光谱、光合速率日变化及相关荧光参数。结果表明:红叶树种花青苷的含量显著高于绿叶树种,除美人梅外,叶绿素、类胡萝卜素的含量红叶与绿叶树种无显著差异。红叶和绿叶树种净光合速率日变化均为双峰曲线,均存在光合“午休”现象,但红叶树种的净光合速率低于绿叶树种,且光合“午休”持续时间较绿叶树种短。从叶绿素荧光参数日变化来看,红叶树种与绿叶树种PSⅡ最大光化学效率(Fv/Fm)差异不大,红叶树种实际光化学效率(ΦPSⅡ)、光化学猝灭系数(qP)低于绿叶树种,非光化学猝灭系数(NPQ)高于绿叶树种,热耗散能力较强。

关键词: 桃属, 李属, 红叶树种, 光合速率, 叶绿素荧光参数

Abstract:

Content of pigments, reflective spectra, and daily changes of photosynthetic rate and chlorophyll fluorescence parameters were investigated using four red-leaf tree species in Amygdalus and Prunus, including A. persica f. atropurpurea, P. cerasifera `Pissardii', P.×bliriana 'Meirenmei', P.×cistena `Pissardii', and two green-leaf tree species A. persica var. compressa and P. salicina `Yuhuangli' were included as controls. The results indicated that all red-leaf tree species had higher content of anthocyanins than the green-leaf plants, and difference of total chlorophyll and carotenoid contents were not remarkable except P.×bliriana 'Meirenmei'. The daily changes of net photosynthetic rate were double-peak curves both in red-leaf and green-leaf tree species, but the net photosynthetic rate was lower in red-leaf tree species than in green-leaf tree species. All tree species have the phenomenon of `noon break', while the duration was shorter in red-leaf tree species than in green-leaf tree species. There were not differences between red-leaf and green-leaf tree species in intrinsic photochemical efficiency of PSⅡ (Fv/Fm), but the quantum yield of PSⅡ (ΦPSⅡ ) and photochemical quenching (qP) of red-leaf tree species were lower than those of green-leaf tree species. Non-photochemical quenching (NPQ) of red-leaf tree species was higher than that of green-leaf tree species.

Key words: Amygdalus, Prunus, red-leaf tree species, net photosynthetic rate, chlorophyll fluorescence parameters