Non-invasive assessment of leaf water status using a dual-mode microwave resonator.
Non-invasive assessment of leaf water status using a dual-mode microwave resonator.
复制标题
DOI：
10.1186/s13007-015-0054-x
复制
发表时间：
2015
期刊：
影响因子：
5.1
通讯作者：
Ballvora A
中科院分区：
文献类型：
--
作者：
Dadshani S;Kurakin A;Amanov S;Hein B;Rongen H;Cranstone S;Blievernicht U;Menzel E;Léon J;Klein N;Ballvora A
植物叶子的水分状况是整个植物水分状况的良好指标，可以揭示供水减少时的压力。对植物组织中水可用性的动态方面的分析为理解干旱胁迫耐受性的机制基础提供了有用的信息，这可能导致改进植物育种和管理实践。植物发育过程中植物组织中水含量的测定一直是一个挑战，目前仅基于破坏性分析是可行的。我们在这里介绍一种非侵入式定量方法的应用，通过一个传感器设备在两个不同频率下进行非侵入式微波测量来确定叶子的体积含水量和叶汁的离子电导率。采用装载有陶瓷介电谐振器和金属集总元件电容器和电感器结构的半开放式微波腔，在 150 MHz 和 2.4 GHz 下对马铃薯、玉米、油菜和小麦叶子进行非侵入式微波测量。选择从每株植物上分离的三片叶子，代表三个发育阶段，代表不同年龄的组织。发现叶片引起的谐振频移和 2.4 GHz 逆谐振器品质因数的变化与重量分析确定的叶片干燥状态之间存在明显的相关性。此外，利用空腔微扰理论根据逆品质因数与 150 MHz 频移之比确定的玉米叶离子电导率与植物汁液的直接测量结果非常一致。与紧凑的电池供电电路板-微波电子模块和用户友好的软件界面相结合，该方法可以通过手持设备对植物进行快速体内水量评估，以供在现场使用。
The water status in plant leaves is a good indicator for the water status in the whole plant revealing stress if the water supply is reduced. The analysis of dynamic aspects of water availability in plant tissues provides useful information for the understanding of the mechanistic basis of drought stress tolerance, which may lead to improved plant breeding and management practices. The determination of the water content in plant tissues during plant development has been a challenge and is currently feasible based on destructive analysis only. We present here the application of a non-invasive quantitative method to determine the volumetric water content of leaves and the ionic conductivity of the leaf juice from non-invasive microwave measurements at two different frequencies by one sensor device. A semi-open microwave cavity loaded with a ceramic dielectric resonator and a metallic lumped-element capacitor- and inductor structure was employed for non-invasive microwave measurements at 150 MHz and 2.4 Gigahertz on potato, maize, canola and wheat leaves. Three leaves detached from each plant were chosen, representing three developmental stages being representative for tissue of various age. Clear correlations between the leaf- induced resonance frequency shifts and changes of the inverse resonator quality factor at 2.4 GHz to the gravimetrically determined drying status of the leaves were found. Moreover, the ionic conductivity of Maize leaves, as determined from the ratio of the inverse quality factor and frequency shift at 150 MHz by use of cavity perturbation theory, was found to be in good agreement with direct measurements on plant juice. In conjunction with a compact battery- powered circuit board- microwave electronic module and a user-friendly software interface, this method enables rapid in-vivo water amount assessment of plants by a handheld device for potential use in the field.
登录
查看更多内容
DOI：
10.1109/tgrs.1984.350644
发表时间：
1984-01-01
影响因子：
8.2
作者：
ULABY, FT;JEDLICKA, RP
通讯作者：
JEDLICKA, RP
影响因子：
8.2
作者：
FERRAZZOLI, P;PALOSCIA, S;COPPO, P
通讯作者：
COPPO, P
影响因子：
2
作者：
Trnka, M.;Eitzinger, J.;Zalud, Z.
通讯作者：
Zalud, Z.
影响因子：
1.8
作者：
BARTHEL, J;BUCHNER, R
通讯作者：
BUCHNER, R
DOI：
10.1007/s10762-013-9972-8
发表时间：
2013-04-01
影响因子：
2.9
作者：
Gente, R.;Born, N.;Castro-Camus, E.
通讯作者：
Castro-Camus, E.