福建农业学报2017，Vol.32Issue(7)：719-723,5.DOI:10.19303/j.issn.1008-0384.2017.07.006
文心兰不同生育期茎叶生理指标的动态变化
Physiological Indices on Top-leaves and Pseudo-bulbs of Oncidium at Different Growth Stages
摘要
Abstract
Changes on the physiological indices including chlorophyll,relative conductivity,soluble sugars,reducing sugars,starch,proline and POD on the top-leaves and pseudo-bulbs of 3-year-old Jinhui orchid,Oncidium,at different growth stages were monitored.It was found that the chlorophyll content in the top-leaves was the lowest,while the relative conductivity highest,at the expanding stage of the plants.They stabilized subsequently.The contents of soluble sugars,reducing sugars and starch in the pseudo-bulbs were higher than those in the top-leaves.Soluble sugars in both tissue parts increased initially,then decreased,and reached a peak at maturation.The reducing sugars in the top-leaves decreased in the beginning followed with an upward trend.Whereas,in the pseudobulbs,the content increased at first,then decreased,and followed by an increase,with two separate peaks occurred at the expanding and maturation stages.Starch in the top-leaves and the pseudo-bulbs increased at first,maximized at the lateral bud stage,then declined.In the beginning of the plant growth,both proline content and POD activity decreased,but increased afterward.The POD activity was low at maturation and lateral bud stages,while high at expanding and pseudo-bulb off shooting stages.关键词
文心兰/顶叶/假鳞茎/生理指标/动态变化Key words
Oncidium/top-leaf/pseudo-bulb/physiological indices/dynamic change分类
农业科技引用本文复制引用
罗远华,王振波,黄敏玲,钟淮钦..文心兰不同生育期茎叶生理指标的动态变化[J].福建农业学报,2017,32(7):719-723,5.基金项目
福建省科技计划项目——省属公益类科研院所基本科研专项(2016R1025-4) （2016R1025-4）
福建省农业科学院科技创新团队PI项目(2016PI-39) （2016PI-39）
