Auxin, for instance, stimulates the rate of cell elongation, causes shoots to grow up and roots to grow down, and inhibits the growth of lateral shoots.
例如，生长素刺激细胞延伸的速度，促使芽和根生长，而抑制侧枝的生长。
2
The families with great P efficiency have great height growthrate, high productivity and extensive lateral root system under low phosphorus stress and low sensitivity to phosphorus supply.
The relationship of crack growthrate between lateral notch specimen and plane plate specimen was studied in this paper. A formula for the relationship was established.