Early Detection of Sage (Salvia officinalis L.) Responses to Ozone Using Reflectance Spectroscopy.

ABSTRACT: Advancements in techniques to rapidly and non-destructively detect the impact of tropospheric ozone (O₃) on crops are required. This study demonstrates the capability of full-range (350-2500 nm) reflectance spectroscopy to characterize responses of asymptomatic sage leaves under an acute O₃ exposure (200 ppb for 5 h). Using partial least squares regression, spectral models were developed for the estimation of several traits related to photosynthesis, the oxidative pressure induced by O₃, and the antioxidant mechanisms adopted by plants to cope with the pollutant. Physiological traits were well predicted by spectroscopic models (average model goodness-of-fit for validation (R²): 0.65-0.90), whereas lower prediction performances were found f

SUBMITTER: Marchica A 

PROVIDER: S-EPMC6784234 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature