Tree strategies of sprouting new shoots : why do trees have different ability of sprouting?

树木发芽的策略：为什么树木的发芽能力不同？

• 批准号: 15570010
• 负责人: SAKAI Akiko
• 金额: $ 2.37万
• 依托单位: National University Corporation Yokohama National University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15570010/
• 关键词: tree sprouting; total non-structural carbohydrate; Quercus serrata; Quercus crispula; re-allocation strategy; root : shoot ratio; 根; Seasonal sprouting ability; Total nonstructural carbohydrate; Shoot; Root ratio; Nonstructural; Structural car

To examine the site and age dependency in the ability of sprouting new shoots for tee seedlings, naturally growing Quercus crispula seedlings were experimentally cut and monitored. Total non-structural carbohydrates(INC), as the resource for sprouting, were also measured. Although this species can establish considerably under wide range of light condition, sprouting ability differed among microhabitats : Q.crispula easily sprouted at open sites, coinciding with large amount of TNC in its root.To investigate seasonal dynamics after a disturbance was investigated for Quercus serrata, the most common oak tree in temperate regions, Japan, that has high sprouting ability. Cutting experiments were carried out in May, June, Jury and August for three-year old Q.serrata seedlings and shoot recovery process was investigated with dynamics of TNC in roots. For intact seedlings, above ground biomass strongly correlated with structural part of roots rather than whole root biomass, suggesting TNC had a function that was not directly related to the ordinal growth. After the cutting, almost seedlings sprouted new shoots during the first month, and its dry mass could be explained with the root TNC at the time of cutting, indicating the high content of TNC is for shoot recovery after disturbance. Although recovery rate in biomass depended on the cutting time and light condition, all seedlings tended to complete recovering root shoot ratio to the intact level at the end of the season, and TNC restoration was also finished for the seedlings cut in May or June.

为了检查发芽新芽能力的地点和年龄依赖性，对自然生长的卷叶栎幼苗进行了实验切割和监测。还测量了作为发芽资源的总非结构碳水化合物（INC）。尽管该物种可以在广泛的光照条件下建立相当多的光照条件，但不同微生境的发芽能力有所不同：Q.crispula 在空旷的地方很容易发芽，这与它的根中含有大量的 TNC 相一致。为了研究锯齿栎在干扰后的季节动态是日本温带地区最常见的橡树，具有很高的发芽能力。 5月、6月、7月和8月对3年生Q.serrata幼苗进行了扦插试验，并通过根中TNC动态研究了芽恢复过程。对于完整的幼苗，地上生物量与根的结构部分而不是整个根生物量密切相关，这表明 TNC 具有与顺序生长不直接相关的功能。扦插后第一个月，几乎所有幼苗都萌发了新芽，其干质量可以用扦插时根部的TNC来解释，表明高含量的TNC是为了干扰后芽的恢复。虽然生物量的恢复率取决于砍伐时间和光照条件，但所有幼苗在季末都趋于完全恢复根冠比至完整水平，并且5月或6月砍伐的幼苗也完成了TNC恢复。

项目成果

SAKAI, SAKAI: "Size-dependent ESS sex allocation in wind-pollinated cosexual plants : fecundity vs stature effects"Journal of Theoretical Biology. 222. 283-295 (2003)

SAKAI，SAKAI：“风授粉同性植物中依赖于大小的 ESS 性别分配：繁殖力与身材效应”理论生物学杂志。

KABEYA, SAKAI, MATSUI, SAKAI: "Relationship between carbohydrate storage and resprouting ability in different age seedlings of quercus crispula"Journal of Plant Research. 116. 207-216 (2003)

Kabeya，SAKAI，MATSUI，SAKAI：“不同年龄卷叶栎幼苗碳水化合物储存与再生能力的关系”植物研究杂志。

Relationship between carbohydrate storage and resprouting ability in different age seedlings of Quercus crispula under different light availability

不同光照条件下不同龄级卷叶栎幼苗碳水化合物储存量与萌发能力的关系

• 发表时间: 2003
• 期刊: Journal of Plant Research 116
• 作者: KABEYA;Daisuke;SAKAI;Akiko;MATSUI;Kiyoshi;SAKAI;Satoki
• 通讯作者: Satoki

Plagiosere succession in urban fragmented forest

城市破碎森林中的 Plagiosere 演替

• 发表时间: 2004
• 期刊: Japanese Journal of Ecology 54
• 作者: TOJIMA;Hisakazu;KOIKE;Fumito;SAKAI;Akiko;FUJIWARA;Kazue
• 通讯作者: Kazue

都市域孤立林における偏向遷移

孤立的城市森林中的偏向转变

• 发表时间: 2004
• 期刊: 日本生態学会誌 54
• 作者: 戸島久和;小池文人;酒井暁子;藤原一繪
• 通讯作者: 藤原一繪