Abstract
For the production of young shoots of Phragmites australis (Cav.) Trin., lateral buds attached to culms and rhizomes are elongated and provided as young shoots frequently in recent years. In this study, we investigated the rate of lateral buds elongated from the segments of culms and rhizomes as well as the growth of these lateral buds. Though no difference was observed between the rate of lateral buds elongated from culms and those of rhizomes, the growth was larger for the buds elongated from culms. We also compared the rate of lateral buds elongated from the segments separated from culms and rhizomes. It was larger in lower part of culms and almost equivalent in each part of rhizomes. In conclusion, for the production of young shoots, it is more appropriate to use culms than to use rhizomes. The lower part of the culms was also more effective for the production. In addition, the effects of temperature as well as the length of culm segments on the elongation of lateral buds were investigated. The length of culm segments influenced little on the elongation of lateral buds, but temperature influenced more on the elongation of lateral buds.
