Physiological and Ecological Characteristics of High Yielding Varieties in Rice Plants : I. Yield and Dry Matter Production

摘要: To clarity the physiological and ecological characteristics of high yielding varieties in rice plants, yield, its components process dry matter production were compared between cultivar Akenohoshi, a new variety, Nipponbare, Japanese standard variety. The yield was 170kg/10a higher Akenohoshi than that Nipponbare due to larger spikelet number per unit area with panicles those Nipponbare. examined by growth analysis method. crop rates at all stages especially much ripening stage owing net assimilation as Leaf indices panicle formation not different significantly two varieties. Net affected canopy structure related leaf arrangement photosynthetic leaves canopy. As light extinction coefficient it assumed difference could be Furthermore, accumulation discussed from point senescence panicle.