短稈多収性の改良インド型水稲品種の特性に関する研究 : 第6報腹白米多発品種「早生統一」における腹白米の不透明部の形と登熟に伴う米粒の背側と腹側のでんぷん粒の発達の差異

概要

論文の詳細を見る
1. Shape of opaque part of white belly kernels. Most of the opaque part of the white belly kernels of this variety extended near the dorsal side. In this variety, white belly and white milky occurred in the kernel at the same time. 2. Starch granules on the ventral and dorsal sides in developing rice kernel of Chosaeng Tongil were observed using scanning electron microscope. In this study, the observed points were 250 μm to 300 μm interior from pericarp. (a) On the dorsal side: 8 days and 12 days after flowering, small and large starch granules were observed. Their shapes were irregularly spherical, and air-spaces were observed among the granules. 16 days after flowering, the air-spaces were not observed, and starch granules showed sharp edges. And on the surface of the starch granules, the pits due to protein body were observed. (b) On the verltral side: In spite of the passing of the time after flowering, at least after 8 days after flowering, starch granules almost never developed, and their diameters were 2 to 5 μm 30 days after flowering. After 16 days, on the surface of the starch granules, the pits due to enzymes in kernel were observed. But the pits due to protein body were not observed. Their shapes were irregularly spherical, and air-spaces were observed among the starch granules during the whole ripening period.
日本作物学会の論文
1980-06-30