Rice morphogenesis and plant architecture: Measurement, specification and the reconstruction of structural development by 3D architectural modelling

被引:118
作者
Watanabe, T
Hanan, JS
Room, PM
Hasegawa, T
Nakagawa, H
Takahashi, W
机构
[1] Natl Agr Res Ctr, Tsukuba, Ibaraki 3058666, Japan
[2] Univ Queensland, Collaborat Plant Architecture Informat, Adv Computat Modelling Ctr, Indooroopilly, Qld 4068, Australia
[3] Hokkaido Univ, Sapporo, Hokkaido 0600808, Japan
[4] Toyama Agr Res Ctr, Toyama 9398153, Japan
基金
日本科学技术振兴机构;
关键词
rice; Oryza sativa; morphogenesis; plant architecture; L-system; 3D modelling;
D O I
10.1093/aob/mci136
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Background and Aims The morphogenesis and architecture of a rice plant, Oryza sativa, are critical factors in the yield equation, but they are not well studied because of the lack of appropriate tools for 3D measurement. The architecture of rice plants is characterized by a large number of tillers and leaves. The aims of this study were to specify rice plant architecture and to find appropriate functions to represent the 3D growth across all growth stages. Methods A japonica type rice, 'Namaga', was grown in pots under outdoor conditions. A 3D digitizer was used to measure the rice plant structure at intervals from the young seedling stage to maturity. The L-system formalism was applied to create '3D virtual rice' plants, incorporating models of phenological development and leaf emergence period as a function of temperature and photoperiod, which were used to determine the timing of tiller emergence. Key Results The relationships between the nodal positions and leaf lengths, leaf angles and tiller angles were analysed and used to determine growth functions for the models. The '3D virtual rice' reproduces the structural development of isolated plants and provides a good estimation of the fillering process, and of the accumulation of leaves. Conclusions The results indicated that the '3D virtual rice' has a possibility to demonstrate the differences in the structure and development between cultivars and under different environmental conditions. Future work, necessary to reflect both cultivar and environmental effects on the model performance, and to link with physiological models, is proposed in the discussion.
引用
收藏
页码:1131 / 1143
页数:13
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