Absorption of Oxygen by Seedlings of Rice Plants of Various Varieties.

[摘要] The experiments were undertaken with water-cultured rice seedlings of 14 varieties as materials, the absoption of oxygen being measured by the method of WINKLER, and the results obtained were as follows: 1. The absorption of oxygen in late maturing varieties was found faster than that in early ones. 2. The transference of oxygen from above-ground parts to roots in late maturing varieties was found faster than in the early ones. 3. From the results it was considered that late maturing varieties are more tolerable than early ones against oxygen deficiency.

[学科分类] 农业科学（综合）