In vivo monitoring of plant metabolism by near infrared spectroscopy

在可见光-近红外光谱范围内，黄瓜果实的吸光度随着冷害的进展而发生变化。从获得的光谱中很难建立电解质渗漏率的偏最小二乘回归模型，这表明有必要检验其他更定量的冷害指标。我们还表明，测量菠菜叶片的可见-近红外光谱可能可以检测到代谢随着大气氧浓度的变化而发生的变化。

We found specific wavelengths in VIS-NIR range where the absorbance changed with progressing chilling injury in cucumber fruit. It was difficult to construct partial least square regression models for a ratio of electrolyte leakage from the obtained spectra, suggesting that it is necessary to examine other more quantitative index for chilling injury. We also showed that measuring VIS-NIR spectra of spinach leaves probably allowed detecting changes in metabolism with variation of atmospheric oxygen concentration.