Fig. 1. Path coefficient diagrams showing the interrelationships among (1) duration of vegetative period (VP), (2) number of spikes per square meter (S), (3) duration of grain-filling period (GFP), (4) number of kernels per spike (KS), (5) kernel weight (KW), and (6) grain yield (GY). The single-headed arrows indicate path coefficients, and the double-headed arrows indicate simple correlation coefficients.

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