Accumulation of <SUP>14</SUP>C-labelled Carbohydrate Before Flowering and its Subsequent Redistribution and Respiration in the Rice Plant

Grain setting defect1, Encoding a Remorin Protein, Affects the Grain Setting in Rice through Regulating Plasmodesmatal Conductance

“…After grain filling, little accumulated starch remained in the wild type (Fig. 1, E and G), consistent with previous studies (Cock and Yoshida, 1972). By contrast, much starch remained in the stem of gsd1-D (Fig.…”

Can Yields of Lowland Rice Resume the Increases that They Showed in the 1980s?

“…Generally, the contribution of NSC stored before heading for fi nal grain yield is about 30% (Cock and Yoshida, 1972;Akita, 1989). However, much evidence has been accumulated to indicate that NSC accumulated before the onset of grain-fi lling plays a more important role in rice grain-fi lling than merely compensation for a shortage of assimilates during the grain-fi lling (Takeda et al, 1980;Seo and Ota, 1983;Akita, 1989;Nakamura et al, 1992;Sumi et al, 1996;Tsukaguchi et al, 1996; Horie et al, 1997).…”

The Effect of the Amount of Nitrogen Fertilizer on Starch Metabolism in Leaf Sheath of Japonica and Indica Rice Varieties during the Heading Period

“…Starch accumulation in leaf sheaths reaches a maximum at the panicle development stage immediately before anthesis and starch content of the leaf sheath decreases rapidly during grain fi lling stage (Perez et al, 1971). Cock and Yoshida (1972) estimated that approximately 21% of the carbohydrate in the rice grain is derived from the starch accumulated temporarily in the culm including the leaf sheath before heading. Thus, in rice plants, it is important for improvement of the grain yield to elucidate the mechanisms of starch metabolism in leaf sheath.…”