緑肥・飼料作物の水田裏作に対する適応性に関する研究 : (第一報) 根の酸化力の種類間差異について

概要

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This experiment was carried out in 1951 at the Kanto-Tosan Agricultural Experiment Station, Ministry of Agriculture and Forestry. Green manure and forage crops used for material were 28 species, including Leguminoceae, Graminaceae and Cruciferae. As a part of the study on the adaptability of these crops for paddy field condition, the oxidizing power of rots was compared. The results obtained are summarized as follows : 1. On the basis of staining of roots caused by the oxidation of α-naphthylamine by roots these crops were classified into 4 types; 0-…not stained, I…slightly stained, II…fairly stained and II…distinctly stained. 2. Close relationship between the degree of staining of roots by the reagent and the actually observed behavior of roots in paddy field soil was found; i.e. roots of crops characterized by the strong staining are capable of elongating into the reduced layer of paddy field soil and also of oxidizing the rhizosphere, which results in the formation of brown iron precipitation in the soil surrounding the roots. 3. Remarkable difference in oxidizing power of roots was found between strains of common vetch (Vicia Sativa L.). These facts will be useful for the breeding of green manure and forage crops and for the selection of the suitable varieties.
日本作物学会の論文
1953-12-25