FIGURE 4.
Networks of significantly correlated N-responsive phenotypic parameters. The networks were constructed using Cytoscape on the mean values of each parameter for 32 replicates on five genotypes and 4 N treatments (normal and low nitrate or urea). The networks are shown for (A) combined data for nitrate and urea; (B) nitrate only and (C) Urea only. The 25 measured parameters were grouped and numbered as germination-related (G) vegetative (V) and reproductive (R) to denote: chlorophyll (V1), green leaf number at vegetative stage (V2), yellow leaf number at vegetative stage (V3), total leaf number at vegetative stage (V4), leaf width (V5), stem thickness (V6), shoot length before harvest (V7), total leaf number at flowering (V8), green leaf number at flowering (V9), yellow leaf number at flowering (V10), fresh biomass (V11), shoot length after harvest (V12), root length (V13), total plant height (V14), dry biomass (V15), flowering (R1), unfilled grain weight (R2), total grain weight (R3), filled grain weight (R4), panicle weight (R5), filled grain number (R6), total grain number (R7), unfilled grain number (R8), weight of panicle remains (R9).