Seasonal changes in the amount of carbohydrate and crude protein in the rhizome ofMiscanthus sacchariflorus |
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Authors: | Takehiro Masuzawa Kinji Hogetsu |
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Institution: | 1. Department of Biology, Faculty of Science, Tokyo Metropolitan University, Setagaya-ku, 158, Tokyo
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Abstract: | In the herbaceous perennials, seasonal changes in the amount of reserve substances play an important role in the production processes of whole plants. Mutohet al. (1968) indirectly estimated the amount of reserve substances stored in the rhizome ofMiscanthus sacchariflorus by measuring the bulk density of the rhizome, and found aarked seasonal changes. In the present study seasonal changes in the carbohydrate and crude protein content of the rhizome were determined and the results obtained were compared with the changes in the total amount of reserve substances estimated by means of changes in the bulk density. A good parallel seasonal relationship was confirmed between the amount of consumable carbohydrate determined chemically and the quantity of reserve substances estimated from the changes in bulk density. The total yields of carbohydrate and crude protein were ca. 75% of the available reserve substances estimated from the changes of bulk density for the old rhizomes and ca. 65% for the new rhizomes in the middle of December. |
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