遮荫及蔗糖喷施对牡丹花色及光合特性的影响  

Effects of Shading and Extraneous Source Sucrose on Petal Color and the Photosynthetic Characteristics in Paeonia suffruticosa

作　　者：杨秋生[1] 朱丽娟[1] 路玲[1] 卢欣周 

机构地区：[1]河南农业大学,河南郑州450002 [2]巩义市林业局,河南巩义451200

出　　处：《河南农业大学学报》2005年第3期249-253,共5页Journal of Henan Agricultural University

基　　金：科技部农业科技成果转化资金项目(2003410010411)

摘　　要：遮荫和蔗糖喷施对‘洛阳红'牡丹的净光合速率、气孔导度、胞间CO2浓度值有较大影响.遮荫对‘洛阳红'牡丹花瓣花色素苷含量的影响达到极显著水平(P<0.01),遮荫处理下喷施一定浓度的蔗糖能使牡丹花瓣花色素甘含量增加(P＜0.01),但喷施蔗糖最佳浓度水平有待于进一步研究.在牡丹催花中,补充光照有利于改善花色,‘洛阳红'牡丹的最适宜光照强度(PFD)在350～1 700 μmol·m-2·s-1之间.The resuhs of research showed that the net photosynthetic rate（ Pn ）, stomatal conductance（ Gs ）, intracellular concentration of CO2（Ci） were changed greatly by shading and sprinking sucrose. The effect of shading on the anthocyanin contents in ＇ Luoyanghong＇ petals was significant （P 〈 0.01 ） .The anthocyanin contents were increased significantly by sprinking certain concentration sucrose under shading （ P 〈 0.01 ）, but the optimal molar concentrations needs further study. During the period of catalyzing florescence of tree peony, complementing illumination is necessary, the PFD that should be supplied for＇ Luoyanghong＇ is between 350 μmol·m^-2·s^- 1 and 1700μmol·m^-2·s^-1.

关 键 词：牡丹 花色素苷含量 净光合速率 气孔导度 光照强度 

分 类 号：S685.11[农业科学—观赏园艺] Q945.11[农业科学—园艺学]