摘要
红叶桃（Prunus persica f.alropurpurea）,蔷薇科（Rosaceae）李属（Prunus）,落叶小乔木,是一种集观赏、食用于一体的彩叶树种,其鲜红绚丽的叶色是观赏的主要特征。但在江南地区种植的红叶桃,6月初的叶片红色消褪较快,叶色很快变绿（肖和忠等,2007）,不仅缩短了观赏时期,观赏价值也大为降低,给红叶桃的生产和应用带来不利影响。
Potted seedlings of 3-year-old red-leaf peach ‘tsukuba-6’were used to study pigments content,soluble sugar and starch content,activity of phenylalanine ammonia-lyase （PAL）,and net photosynthetic rate in leaves with the foliar spray of KH2 PO4 and sucrose solution during the regreening of red-leaf in early summer.The results showed that,both KH2 PO4 and sucrose solution promoted accumulation of anthocyanin （Ant） of red-leaf peach remarkably,increased the ratio of Ant,chlorophyll （Ant /Chl）,the soluble sugar,starch content and activity of PAL in leaves.KH2 PO4 also improved net photosynthetic rate（Pn） of red-leaf peach.Furthermore,of all the treatments,0.3% KH2 PO4 solution or 0.5% sucrose solution was best in promoting leaf-colored.The foliar spray of KH2 PO4 or sucrose solution was an economic and easy method to alleviate regreening of red-leaf peach in summer for urban greening management.
出处
《林业科学》
EI
CAS
CSCD
北大核心
2011年第3期170-174,共5页
Scientia Silvae Sinicae
基金
江苏省农业科技示范推广项目(BC2005344):彩叶树种的引选与容器育苗标准化繁育技术的示范推广
关键词
红叶桃
KH2PO4
蔗糖
花色素苷
光合色素
净光合速率
red-leaf peach
KH2PO4
sucrose
anthocyanin
photosynthetic pigments
net photosynthetic rate
