Genetic Advance and Grain Yield Stability of Moroccan Durum Wheats Grown under Rainfed and Irrigated Conditions

Figure 2

PCA projections on axes 1 and 2 accounting for 84% of total variance. Eigenvalues of the correlation matrix are symbolized as vectors representing traits that most influence each axis. The 12 points representing traits means for each water regime (rainfed (Rn) and irrigated (Irr)) are plotted on the plane determined by axes 1 and 2. Grain yield (GY), spikes per m² (SM), kernels per spike (KS), kernel weight (KW), harvest index (HI), spikelets per spike (SS), kernels per spikelet (KSP), fertile tillering (FT), plant height (PH), and spike length (SL).