Influence of Fertilizer Application on Seed-Protein Composition and Their Accumulation Pattern during Ripening Stage in Seed-Protein Mutants of Rice

Abstract

Rice varieties derived from mutants with various kinds of seed protein components such as low glutelin or 26k-Da globulin deficiency were grown in different fertilizer conditions. The results of analysis of variance revealed a significant varietal difference in the protein composition (P < 0.01), but not in the total protein content. Effects of basal and top dressing on protein composition were not significant in the most cases, and were less than the varietal difference. On the other hand, the total protein content, significantly varied with the variety and top dressing, but it depended on the year. In general, the fertilizer application did not affect the protein composition in the ripening stage.