D. Brohma, N. Domurath, S. Faber and F.-G. Schröder
Faculty for Agriculture / Landscape Management
University of Applied Sciences Dresden
01326 Dresden Germany

Abstract
Detection of stressful situations of plants and crops presents a seductive possibility to discover harmful circumstances before a permanent damage or losses of
harvest appear. For this aim, a new portable ethylene measurement device was tested in a small glass chamber setup. Hybrids of Solenostemon scularioides were stressed by high salt concentrations applied with the nutrient solution and by injury of upper parts. Sample air was taken in the root zone. During salt stress a change of the normal periodic rhythm of the ethylene synthesis was noticed on all stressed plants. No reaction in ethylene synthesis was noticed in the root zone after injury stress.

檢測到植物和作物的脅迫情況，可以在發生性損害或收獲損失之前發現有害環境。為此，在一個小型玻璃室裝置中測試了一種新的便攜式乙烯測量裝置。Solenostemon scularioides的雜交種受到高鹽濃度營養液施用的和上部傷害的影響。在根區取樣空氣。在鹽脅迫期間，在所有受脅迫的植物上注意到乙烯合成的正常周期節律的變化。在損傷應激后根區沒有發現乙烯合成反應

Keywords: Solenostemon scularioides, painted nettle, salt stress, injury, ACC

To produce 100 % hydrocarbon free air, a zero-air total oxidation module from SylaTech GmbH was connected into the System. The operating temperature was set to
400 °C. The maximum ethylene concentration at the outlet was <0.001 ppm. Temperature and humidity inside the chambers were recorded by a LOG 32 data logger. Ethylene measurements were operated by an ETH-1010 analyser from Fluid Analytics, Inc by an intake of 200 ml sample air. The device was standardised with a calibration gas of 8 ppm C2H4 and 99.9992% N before every measurement period. The change of the different gas flows was done with a multiposition valve from VICI Valco Instruments Co. Inc.

為了生產100%無烴空氣，Sylatech GmbH的零空氣總氧化模塊被連接到系統中。工作溫度設定為400°C。出口處的大乙烯濃度<0.001 ppm。室內的溫度和濕度由log 32數據記錄器記錄。乙烯測量由來自Fluid Analytics公司的ETH-1010乙烯分析儀通過速率200 ml/mins樣品空氣進行操作。在每個測量周期之前，用8 ppm C₂H₄和99.9992%n的標定氣體對裝置進行標準化校準。不同氣體流量的變化是VICI Valco Instruments Co. Inc多位置閥控制完成。

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