湿田の稲作改善に関する栽培技術的研究 : V. 水稲品種の生理的特性と秋落抵抗性に関する研究 : (5) 水稲根のH_2S酸化力の品種間差異

概要

論文の詳細を見る
H_2S-oxydation activity of rice roots, was measured in relation to the varietal differences in Akiochi resistance. The results were as follows: 1) H_2S oxydation activities of rice roots varied with concentration of H_2S and pH of the culture solultion. 2) It has generally been comprehended that H_2S oxydation activities of rice roots are due to Fe^<+++> ions which exist on the root surface. But, according to the authors' findings some oxydative substances in the root cells seem to take some part in the phenomenon. 3) Among the seedlings, grown under high temperatures, later varieties gave generally stronger value of H_2S oxydation activity than earlier ones. But under low temperatures, such a relation was not found. 4) It was found that there are positive correlation between Eh_6 of the rice root cell-sap and H_2S oxydation activity of the root, and that resistance of the plant against yield-fall (Akiochi) is related with the strength of H_2S oxydation activity of rice roots.
日本作物学会の論文
1958-04-01