Importance of genet-intermingled spatial structure on extended flowering interval of temperate bamboos in the northern hemisphere.

2014 Fiscal Year Final Research Report

• Project/Area Number: 23380088
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Forest science
• Research Institution: Akita Prefectural University
• Principal Investigator: MAKITA Akifumi 秋田県立大学, 生物資源科学部, 教授 (60315596)
• Co-Investigator(Kenkyū-buntansha): SUZUKI Jun-ichiro 首都大学東京, 理工学研究科, 准教授 (00291237) ; SUYAMA Yoshihisa 東北大学, 農学研究科, 准教授 (60282315) ; SAITOH Tomoyuki 独立行政法人森林総合研究所, 研究員 (00414483) ; INOUE Mizuki 秋田県立大学, 生物資源科学部, 助教
• Co-Investigator(Renkei-kenkyūsha): SHIBATA Shouzo 京都大学, 農学部, 教授 (50211959) ; NISHIWAKI Aya 宮崎大学, 農学部, 教授 (60228244) ; ISAGI Yuji 京都大学, 農学部, 教授 (50325130)
• Research Collaborator: MATSUO Ayumi 秋田県立大学, 嘱託職員 ; TACHIKI Yuuya 北海道大学, 地球科学研究科, 特別研究員 ; SUGANO Yoshimasa 東北大学大学院, 農学研究科 ; OKURA Chinatsu 秋田県立大学, 生物資源研究科
• Project Period (FY): 2011-04-01 – 2015-03-31
• Keywords: 開花習性 / bamboo / 長寿命一回繁殖性 / 進化 / 空間ジェネット構造 / 繁殖成功度

Outline of Final Research Achievements

Bamboos in the temperate regions of the northern hemisphere are well known to have conspicuously long interfloral periods. To clarify the evolutionary trends of bamboo flowering behavior, we proposed the new insight by taking their genet-intermingled structure into account. In contrast with clump-forming tropical bamboos, temperate bamboos form genet-intermingled structure with horizontal extending rhizomes. We clarified that the large genets of the temperate bamboo after long clonal growth showed high reproductive success with low self-fertilization rate. Theoretical study also supported that the long rhizomes drive the evolution of delayed flowering. These studies strongly suggested the importance of genet spatial structure on the evolution of bamboo flowering behavior.

Free Research Field

生態学