Fig. 6
From: Characterization of sugarcane (Saccharum spp.) leaf senescence: implications for biofuel production
Biplot graphics of the principal component analysis (PCA) from SPAD index, macro and micronutrients, and neutral monosaccharides from base (a), middle (b), and tip (c) portions of the leaf blade. Each point integrates all components evaluated related to sugarcane leaf senescence. Values in brackets show the percentage of the variance explained by each axis. SPAD SPAD index, N nitrogen, P phosphorous, K potassium, Ca calcium, Mg magnesium, S sulfur, B boron, Cu copper, Fe iron, Zn zinc, Mn manganese, Al aluminum, Fuc fucose, Rha Rhamnose, Ara arabinose, Gal galactose, Glc glucose, Xyl xylose