水稲の赤枯病に関する栄養生理的研究 : 第IV報栽培条件による赤枯病発生の差異並びにその体内代謝との関係

概要

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The occurrence of "Akagare" disease of rice plant was tested by pot experiments using paddy soil on which the disease habitually occurs. Use of densely sown seedlings, heavy application of nitrogen and deep submergence of irrigation water promoted the occurrence of the disease, while use of sparsely sown seedlings and upland seedlings, dense planting per hill and drainage in midsummer decreased its occurrence. The occurrence of the disease correlated highly with the increase in soluble-N content, soluble-N/protein-N ratio, ratio, the decrease in starch accumulation in leaf sheath and the enhancement of peroxidase activity in lower leaves. The respiratory rate also showed correlation, although not significant, with the occurrence of the disease. From these results the occurrence of the disease seems to be closely connected with the decrease in starch content and the increase in soluble-N content, both likely to be caused by increase of respiration, and with the increase in peroxidase activity.
日本作物学会の論文
1957-09-20