葉分析の研究 : II. 小麦に於ける炭水化物の時期的変化 : 葉鞘中蔗糖の集積について

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Continuing the previous report, we researched on carbohydrate status of wheat plants grown on fertilizer three element treatments by field experiment. As starch is not detected in leaves and stems of wheat plants during whole growth period, only reducing sugar and sucrose are analyzed. Considering these results, it is assumed that R. S. and Su. are formed in leaf blade, then translocated to leaf sheath, and are much accumulated there as the form of sucrose during vegetative growth period. Accumulation of sucrose in leaf sheath is reached maximum at about young ear formation stage. This phenomenon is similar to starch accumulation in the leaf sheath of rice plants. Accumulated sucrose are then translocated to internode as it full elongates, and later translocate to ear as much the form of reducing sugar by maturation. As to the relation between sucrose content of leaf sheath at that stage and the nutrient status of plants, high sucrose content shows N-deficiency of the plant, and low content shows N-excess. Therefore, it is able to diagnose nutrient status of wheat plants by sucrose contents in leaf sheath.
神戸大学の論文