43
was not permitted to be negative, it was set to zero when this condition occurred. No dry weight was accumulated for seven days after planting. This time period was reserved for seed germination and seedling emergence.
-C.) Results
The linear relationship between leaf area and leaf dry-matter (Fig. 1) was highly correlated (r- 0.97). The dry-matter accumulation of stems over time was also well (r=0.89) described by a straight line (Fig. 2). The dry-matter accumulation of seeds over time was described by a cubic equation with an associated r = 0.94 (Fig. 3). The dry-matter accumulation of pods over time was described by a quadratic equation with an r 0.89 (Fig. 4). The dry-matter accumulation over time of petioles and leaves was described by separate cubic equations with r = 0.87 for petiole (Fig. 5) and r = 0.89 for leaf dry-matter accumulation over time (Fig. 6). The dry-matter accumulation for whole plants over time is presented in Fig. 7, where a linear equation with an r = 0.89 described the response. Values of r = 0.48, 0.61, 0.72 corresponded to P = 0.05, 0.01, 0.001 for 15 degrees of freedom (42).