Infrared Spectroscopy Enables Rapid Identification of Scots Pine Resistant to Diplodia sapinea

This repository contains the processed FT-IR spectral data, lesion length data, and accompanying R code used in the study “Infrared Spectroscopy Enables Rapid Identification of Scots Pine Resistant to Diplodia sapinea”. The dataset includes trimmed and pre-processed mid-infrared spectra collected from Scots pine (Pinus sylvestris) needles, shoots, and phloem tissues across two experimental years, along with corresponding lesion-based resistance phenotypes following artificial inoculation with Diplodia sapinea. All spectra are baseline-checked, clipped to informative mid-IR regions, and quality-filtered to remove poor-contact scans. The R scripts provide the workflow for lesion length analyses, PCA visualization, sPLS-DA variable selection, and SVM classification analyses. These resources enable full reproducibility of the chemometric resistance-prediction models presented in the manuscript.