低温对牡丹花芽发育的影响  

Effects of low temperature on development of Paeonia suffruticosa Andr. flower bud

作　　者：单银丽[1] 贾文庆[2] 沈玉英[1] 

机构地区：[1]浙江建设职业技术学院,浙江杭州311231 [2]河南科技学院,河南新乡453003

出　　处：《广东农业科学》2013年第16期46-48,F0002,共4页Guangdong Agricultural Sciences

基　　金：河南省重点科技攻关项目(112102110021)

摘　　要：以牡丹品种乌龙捧盛的花芽为材料,研究了低温对牡丹花芽形态及组织解剖结构的影响。结果表明:在5℃低温下,牡丹花芽只需要42 d即可打破休眠。与对照相比,低温处理42 d明显提高了花芽的质量,增大了芽径,横径比对照增加0.18 cm、纵径增加0.25 cm。通过芽的解剖结构可知,低温处理30 d芽的鳞片开始破裂,未处理的生长40 d鳞片才开始破裂,与对照组相比较,低温处理可以提前10 d现蕾。低温处理可以有效解除芽休眠、提高开花质量、促使花期提前。不经过低温或低温不足则不能够彻底解除休眠,移入温室后开花不正常或不能开花。Paeonia suffruticosa Andr variety ＂Wu Long Peng Sheng＂ was used to study the effects of low temperature on breaking dormancy and development of peony flower bud.The results showed that 42 days at 5℃ efficiently released dormancy.Compared to CK,low temperature treatment of 42 days also had effects on development degree of flower bud and increased the bud diameter,the width of flower bud increased 0.18 cm and the length increased 0.25 cm.Low temperature could release dormancy,promote bud sprouting and flowering,and alabastrum emergence could be earlier 10 days.It showed that low temperature could accelerate the flower bud development,improve blooming rate and regulate the florescence.Absence of low temperature would lead to failure of dormancy release or not completing dormancy release.

关 键 词：牡丹 低温 形态变化 

分 类 号：S685.11[农业科学—观赏园艺]