Study on the respiration of crop plants. : (2) Changes in the respiration rate associated with the growth of rice plant.

[摘要] Respiration rate of each part of the rice plant was measured from the seedling stage to the maturity. Respiration rates were measured both at constant temperature, 30°C., throughout the whole season, and at the natural temperature. They were represented both as mg. of CO2 out-put per hour per mg. dry weight (Fig. 1 and 2), and as that per plant (Fig. 4). The maximum respiration rate shown from 10 to 20 days after transplanting is responsible for the maximum value of relative growth rate at that time (Fig. 3). Apparent peaks, though rather small they are, in respiration rates were observed at the time of the differentiation of ear-primordia, formation of germ cells, and heading.

[学科分类] 农业科学（综合）