非洲菊切花茎堵塞的解剖结构观察  

Anatomical Structure Observation of Stem Blockage in Cut Gerbera Flowers

作　　者：贺苏丹[1,2] 肖德兴[1] 刘季平[1,3] 何生根[1] 涂淑萍[2] 吕培涛[1] 

机构地区：[1]仲恺农业工程学院生命科学学院,广州510225 [2]江西农业大学园林与艺术学院,南昌330045 [3]华南农业大学园艺学院,广州510642

出　　处：《园艺学报》2009年第7期1077-1082,共6页Acta Horticulturae Sinica

基　　金：国家自然科学基金项目(30771519);广东省自然科学基金重点项目(8251022501000002);广州市重点科技攻关项目(2007Z2-E0071);广州市荔湾区科技计划项目(2008210021)

摘　　要：基于花茎解剖结构的研究,对非洲菊切花采后的花茎堵塞现象及杀菌剂纳米银处理的影响进行了探讨。结果表明:非洲菊切花茎基端的导管堵塞严重,而上部与中部导管未见明显堵塞现象。扫描电镜观察证实,非洲菊切花茎导管中的堵塞物为细菌。非洲菊切花采后用纳米银溶液浸渍花茎基端处理24h可明显减少和推迟导管中堵塞物发生,显著延长切花的瓶插寿命。On the basis of anatomical observation, the postharvest stem blockage in cut gerbera （ Gerbera jamesonii） flowers and the effect of the nano silver treatment were investigated. The results showed that the obvious vascular blockage was found in the cut stem end, but not in the stem segments of upper and middle parts of cut gerbera flowers. Observation under SEM certified that the vascular blockage was resulted from bacteria. Pulsing the stem end of cut gerbera flowers for 24 h in nano silver solution, the vascular blockage could be significantly alleviated and delayed, and the vase life was also markedly prolonged.

关 键 词：非洲菊 纳米银 导管阻塞 细菌 

分 类 号：S682.11[农业科学—观赏园艺]