2009 Fiscal Year Final Research Report

Elucidation of regulation mechanism and ecological roles of rhizome enlargement in lotus with regard to phytochrome

Research Project

Project/Area Number	19580036
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Single-year Grants
Section	一般
Research Field	Horticulture/Landscape architecture
Research Institution	Kyushu University
Principal Investigator	OZAKI Yukio Kyushu University, 大学院・農学研究院, 准教授 (60253514)
Co-Investigator(Kenkyū-buntansha)	OKUBO Hiroshi 九州大学, 大学院・農学研究院, 教授 (80150506)
Research Collaborator	MASUDA Jun-ichiro 九州大学, 熱帯農学研究センター, 講師(研究機関研究員) (60452744)
Project Period (FY)	2007 – 2009
Keywords	野菜
Research Abstract	Rhizome enlargement occurred in the lotus plants that received the signal of short daylength with one or some of the leaves. Covering with low (red light / far red light) ratio films accelerated rhizome enlargement of the plants even in the long daylength. It was demonstrated that rhizome enlargement started two weeks after short daylength treatments, and it was suggested that gibberellins regulated the rhizome growth (elongation or enlargement). Enlarged rhizomes had dormancy and the dormancy could break by the low temperature treatments.

(4 results)