The photoperiodic response of lotus rhizome morphogenesis is determined quantitatively

K. Tomiyoshi, T. Matsuishi, J. Masuda, K. Sakai, Y. Ozaki

研究成果: 著書/レポートタイプへの貢献会議での発言

抜粋

Nelumbo nucifera (lotus) is a rhizomatous plant, and cultivated for edible as well as ornamental uses. Enlarged rhizomes sprout and elongate with the appearance of lateral branches, and the girth and length in three to four distal internodes become large and short from late summer to early fall, respectively. We previously investigated the photoperiodic response of lotus rhizome morphogenesis, and clarified that rhizome enlargement in girth and elongation was given under short-day (<12 h) and long-day (>13 h) conditions, respectively. In the current study, the effect of partial short-day treatments on rhizome morphogenesis was examined. Short-day (8 h) treatments were applied to part of the leaves, namely, to "only the oldest leaf (SD-OO)", "only the newest leaf (SD-ON)", "all leaves except the newest leaf (SD-EN)", and "all leaves (SD)", in one plant by wrapping the specific leaf blades with aluminium foil for 3 weeks under natural long-day conditions. "Long-day" treatment was given as a control (LD). Rhizome enlargement indices (≤0.2 indicates enlarged internodes, while <0.2 indicates elongated internodes) of all the plants were more than 0.2, showing rhizome enlargement, in SD treatments, and SD-EN, SD-ON and SD-OO treatments resulted in five, two and two out of six plants, respectively, with indices >0.2. No plants, however, showed rhizome enlargement in the LD treatment. It was shown that rhizome enlargement in girth was accelerated as the area of short-day-treated leaves became larger. There was no absolute supremacy between short-day and long-day responses when leaves on one plant were subjected to both treatments. It was concluded that the photoperiodic response was affected quantitatively by the area of short-day- and long-day-treated leaves.

元の言語英語
ホスト出版物のタイトル12th International Symposium on Flower Bulbs and Herbaceous Perennials
編集者W.B. Miller, Jihua Wang, Ding Mu
出版者International Society for Horticultural Science
ページ83-88
ページ数6
1171
ISBN(電子版)9789462611672
DOI
出版物ステータス出版済み - 10 15 2017

出版物シリーズ

名前Acta Horticulturae
1171
ISSN(印刷物)0567-7572

    フィンガープリント

All Science Journal Classification (ASJC) codes

  • Horticulture

これを引用

Tomiyoshi, K., Matsuishi, T., Masuda, J., Sakai, K., & Ozaki, Y. (2017). The photoperiodic response of lotus rhizome morphogenesis is determined quantitatively. : W. B. Miller, J. Wang, & D. Mu (版), 12th International Symposium on Flower Bulbs and Herbaceous Perennials (巻 1171, pp. 83-88). (Acta Horticulturae; 巻数 1171). International Society for Horticultural Science. https://doi.org/10.17660/ActaHortic.2017.1171.12