Role of the Hull in the Ripening of Rice Plant : II. Changes in photosynthesis and respiration of hull during ripening

[摘要] In order to elucidate the physiological characteristics of the hull during ripening, photosynthesis and respiration of hulls of fertile and sterile grains were compared. The results are as follows: 1. Photosynthetic activity and water content of hull were much higher in sterile than in fertile grain. 2. Respiratory activity of hull was higher in fertile than sterile hull. 3. Ratio of photosynthetic to respiratory activity of hull was much smaller in fertile than in sterile grain. There results indicate that the hull plays an important role in the process of kernel development as a pool for the translocation of nutrients including carbohydrates.

[学科分类] 农业科学（综合）