抄録
The effect of some treatments in the application of nitrogenous fertilizer on the quality of gluten in wheat grains was investigated. The following results were obtained. (1) It appeared that among four kinds of protein analyzed, gliadin and glutenin contents in the grains were markedly varied by the nitrogenous fertilizer treatments, while both leucosin and globulin to hardly reveal any variation in percentage. (2) It was found that the ample supply of N-manure resulted in a better gluten character, while the small quantity of N-manure exerted a detrimental influence upon the gluten quality, as compared with grains grown without N-manure. The sufficient and proper supply of N-manure improved the quality. Excess of N-manure produced lighter crumped grains. These grains seemed to be rather good in gluten quality but poor in starch contents. (3) In the case of a certain amount of N-manure applied, dressing of a considerable quantity of N-manure in March improved the quality of grains not only in protein contents but also in glutinous character than the application of a greater part of N-manure at seeding time. Excessive application of nitrogen in March tended, however, to increase gluten contents of the grains, but deteriorate the gluten quality. (4) Nitrogen application as late as the heading and flowering time had a tendency to raise the gluten content in the grains, but did not exert a good influence upon the gluten character.
