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PSK植物胁迫测量套件

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应用
Y(II)或ΔF/FM’ 或 (FM’ – FS )/FM’) 是经受时间考验的光适应测量参数,比FV/FM对更多类型的植物胁迫更加敏感。已有的大量证据表明FV/FM对许多种植物胁迫和健康植物的光系统II的测量十分出色,而Y(II)或光量子产额则可测量实际光照下光适应环境和生理状况的光系统II的效率。
原理
 
采用调制饱和脉冲原理,测量植物的叶绿素荧光,通过相关文献的研究成果,计算植物的光量子产额及相对电子传递速率,同时可测量PAR、叶温、相对湿度等环境参数。
 
特点
叶片吸收测量:提供叶片吸收测量及随环境变化导致的叶片吸收变化。根据Eichelman (2004) 叶片吸收在健康植物的变化范围在0.7~0.9 之间。因此,为获得准确的ETR或“J”,Y(II)测量仪提供了一个可靠的测量方法,
FV/FM测量单元:可额外选配FV/FM测量仪,用于暗适应测量。

具有暗适应叶夹
阳光下屏幕可见
图形显示FV/FM曲线
2GB存储空间
USB通讯
数据Excel查看
 
先进的PAR叶夹:采用底部叶夹打开装置,防止测量时误操作打开叶夹。对传感器进行余弦校正,确保叶片相对测量光的角度不变。
 
 
FM’校正:对于具有高光照强度历史的植物,完全关闭光反应中心是一个问题,Y(II)测量仪使用Loriaux &Genty 2013的方法进行FM’校正,确保误差最小。
自动调制光设定:快速准确自动的调整合适的调制光强,避免人工操作的误差。
先进算法避免饱和脉冲NPQ:采用25ms内8点的平均值确定FM’,消除饱和脉冲NPQ的影响。
更精确的叶温测量:采用非接触式红外测量,测量精度可达±0.5℃。
直接测量相对湿度:含有测量气体交换使用的固态传感器,可测量相对湿度。
降低叶片遮挡的设计:倾斜的角度减少对叶片的遮挡,可以测量拟南芥等小叶。
 
系统组成
标配:
Y(II)光量子产额测量仪、充电器、USB电缆、便携箱、2个吸收测量单元、U盘(包含说明书)。

可选:
FV/FM测量仪及10个暗适应叶夹、三脚架。
 
技术指标
测量参数
Y(II)或ΔF/Fm‘、ETR、PAR、T、FMS或FM’、Fs、α(叶片吸收)。
监测模式:可使用电脑,长时间监测Y(II)、ETR、叶片吸收、PAR、叶温、相对湿度、及计算NPQ。
相对湿度:5%~95%,±2%。
可选参数:FV/FM、FV/FO,FO, FM, FV
可使用AC或USB供电,可配三脚架。
技术参数
光源
饱和脉冲:白色LED具有PAR时7000μmols
调制光:红色LED 660nm,具有690nm短波过滤。
光化光源:仅可使用外部光源
检测方法:调制脉冲法
检测器&过滤器:具有700~750nm带通过滤的PIN光电二极管
取样速率:1~10000点/秒自动切换。
测量时间:3s或长期监测
存储空间:2GB
输出:USB
尺寸:便携箱尺寸为14”x 11”x 6”,仪器为9’’长
质量:Y(II) 测量仪0.45 kg
FV/FM测量仪0.36 kg.
总重1.95 kg.
产地
美国
文献
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