spectra and NFTs from seed orchards

The full dataset includes needle functional traits and spectra measured on needle and canopy levels. The same ramets and clones sampled for needle level reflectance measurements were used for NFTs assessment. Current-year shoots were sampled and transported to the laboratory. Two complimentary needle samples were collected from each shoot. The first needle set was used for content assessment of photosynthetic pigments (chlorophyll a (chl a) and chlorophyll b (chl b); total chlorophylls (chl T); total carotenoids (car)). Needles were cut into 2-3 mm segments, and pigments were extracted in the dark at 4 °C for seven days using N-dimethylformamide (Porra et al., 1989). The content of photosynthetic pigments was determined spectrophotometrically using a Spectrophotometer (Evolution 201, Thermo Fisher Scientific, Waltham, MA, USA). According to Wellburn (1994), pigment concentrations were calculated and related to dry weight (mg of pigment per g of dry mass). The second needle set was u...