PLANT ARCHITECTURE : TRADE-OFF BETWEEN GROWTH AND MECHANICAL STABILITY

工厂架构：生长与机械稳定性之间的权衡

• 批准号: 20370015
• 负责人: HIROSE Tadaki
• 金额: $ 11.81万
• 依托单位: Tokyo University of Agriculture
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20370015/
• 关键词: 生理生態; 植物のアーキテクチャ; 伸長成長; 力学的安定性; 資源利用; 成長と繁殖; 窒素; 光; 分枝自律性; 植物; アーキテクチャ; 繁殖; 組織化学; リグニン

We studied the effect of planting density on plant architecture with particular attention to growth and mechanical strength of metamers. Crowded plants elongated their stem at the expense of mechanical stability. On the other hand, uncrowded plants reduced elongation and increased light interception by lateral extension of branches. Nitrogen use efficiency was higher in uncrowded plants, whereas light use efficiency was higher in crowded plants. Yang's modulus of elasticity increased with increasing dry mass density of stem. Stems of crowded plants had a lower dry mass density, but Yang's modulus per dry mass density was higher. However, they increased stem height to the limit of lodging.

我们研究了种植密度对植物建筑的影响，特别关注Metamers的生长和机械强度。拥挤的植物以机械稳定性为代价将其茎拉长。另一方面，不拥挤的植物通过分支的横向延伸来减少伸长率，并增加光截距。在不受欢迎的植物中，氮的使用效率更高，而拥挤的植物的光使用效率则更高。杨的弹性模量随着干质量密度的增加而增加。拥挤的植物的茎的质量密度较低，但是杨的模量每个干质量密度较高。但是，它们将茎高度提高到住宿的极限。

项目成果

Does photosynthesis adapt to CO2-enriched environments? An experiment on plants originating from three natural CO2 springs

光合作用是否适应富含二氧化碳的环境？

• 发表时间: 2009
• 期刊: New Phytologist
• 影响因子: 9.4
• 作者: Yamazaki T;Miyazawa Y;Kobayashi A;Moriwaki A;Fujii N;Takahashi H;森本恭子;Onoda Y
• 通讯作者: Onoda Y

Effects of elevated CO2 concentration on seed production n C3 annual plants.

CO2 浓度升高对 C3 一年生植物种子产量的影响。

• 发表时间: 2011
• 期刊: Journal of Experimental Botany 62
• 作者: Hikosaka K;Kunugasa T;Oikawa S;Onoda Y;Hirose T.
• 通讯作者: Hirose T.

施肥がイネの分げつと葉群動態に与える影響

施肥对水稻分蘖和叶群动态的影响

• 发表时间: 2011
• 作者: Moriwaki T;Miyazawa Y;Takahashi H;渡辺雄一郎;奥田昇;渡辺雄一郎;中村和輝・及川真平・廣瀬忠樹
• 通讯作者: 中村和輝・及川真平・廣瀬忠樹

Plants in a crowded stand regulate their height growth so as to maintain similar heights to neighbours even when they have potential advantages in height growth

• DOI: 10.1093/aob/mcr109
• 发表时间: 2011-07-01
• 期刊: ANNALS OF BOTANY
• 影响因子: 4.2
• 作者: Nagashima, Hisae;Hikosaka, Kouki
• 通讯作者: Hikosaka, Kouki

Effects of elevated CO2 concentration on seed production in C3 annual plants

• DOI: 10.1093/jxb/erq401
• 发表时间: 2011-02-01
• 期刊: JOURNAL OF EXPERIMENTAL BOTANY
• 影响因子: 6.9
• 作者: Hikosaka, Kouki;Kinugasa, Toshihiko;Hirose, Tadaki
• 通讯作者: Hirose, Tadaki