Le Yang , Panpan Wu , Zhengkang Zuo , Lan Long , Junlin Shi , Yutang Liu
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In the soil coupling process, a soil nutrient simulation map was constructed based on the spatial soil characteristics per unit volume, and an adjustment strategy for roots reaching the growth boundary was designed. The flexibility of the model coupled with soil was reflected in the tropisms of root growth, growth rate and root branching strategy. Finally, combined with soil spatial characteristic simulation, geometric growth boundary and 3D root growth model, the ability of 3D growth visualisation of rice roots was verified under three soil conditions: (1) unconfined root growth, (2) confined spatial root growth, and (3) root growth with tropisms. The results indicated that the ERoots root model basically realised coupling with soil and achieved a satisfactory simulation effect in regard to the rice morphological structure. This study provides a reference for 3D growth modelling and visualisation of other crop roots.</p></div>","PeriodicalId":9173,"journal":{"name":"Biosystems Engineering","volume":"244 ","pages":"Pages 122-133"},"PeriodicalIF":4.4000,"publicationDate":"2024-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"ERoots: A three-dimensional dynamic growth model of rice roots coupled with soil\",\"authors\":\"Le Yang , Panpan Wu , Zhengkang Zuo , Lan Long , Junlin Shi , Yutang Liu\",\"doi\":\"10.1016/j.biosystemseng.2024.06.002\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Root architecture systems (RAS) reflect the spatial structure of roots in soil. To clarify the structure and distribution of rice roots and investigate the coupling between roots and soil, wetland rice was selected as the experimental object, and a three-dimensional (3D) growth model of rice root environment-roots (ERoots) based on the parameter Lindenmayer system (L-system) was proposed. ERoots combines a root morphological structure model with a growth model and defines L-system grammar iteration rules with the unit time and unit step length as parameters. At the same time, the basic growth parameters of rice roots were obtained via destructive detection, and 3D growth visualisation of roots was realised via MATLAB. In the soil coupling process, a soil nutrient simulation map was constructed based on the spatial soil characteristics per unit volume, and an adjustment strategy for roots reaching the growth boundary was designed. The flexibility of the model coupled with soil was reflected in the tropisms of root growth, growth rate and root branching strategy. Finally, combined with soil spatial characteristic simulation, geometric growth boundary and 3D root growth model, the ability of 3D growth visualisation of rice roots was verified under three soil conditions: (1) unconfined root growth, (2) confined spatial root growth, and (3) root growth with tropisms. The results indicated that the ERoots root model basically realised coupling with soil and achieved a satisfactory simulation effect in regard to the rice morphological structure. 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引用次数: 0
摘要
根系结构系统(RAS)反映了根系在土壤中的空间结构。为弄清水稻根系的结构与分布,研究根系与土壤的耦合关系,选择湿地水稻作为实验对象,提出了基于林登马耶系统(L-系统)参数的水稻根系环境-根系三维生长模型(ERoots)。ERoots 将根系形态结构模型与生长模型相结合,并定义了以单位时间和单位步长为参数的 L 系统语法迭代规则。同时,通过破坏性检测获得了水稻根系的基本生长参数,并通过 MATLAB 实现了根系的三维生长可视化。在土壤耦合过程中,根据单位体积土壤的空间特征构建了土壤养分模拟图,并设计了根系到达生长边界的调整策略。该模型与土壤耦合的灵活性体现在根系生长、生长速度和根系分枝策略的趋向上。最后,结合土壤空间特征模拟、几何生长边界和三维根系生长模型,验证了水稻根系在三种土壤条件下的三维生长可视化能力:(1)非受限根系生长;(2)受限空间根系生长;(3)根系生长趋向。结果表明,ERoots 根系模型基本实现了与土壤的耦合,对水稻形态结构的模拟效果令人满意。该研究为其他作物根系的三维生长建模和可视化提供了参考。
ERoots: A three-dimensional dynamic growth model of rice roots coupled with soil
Root architecture systems (RAS) reflect the spatial structure of roots in soil. To clarify the structure and distribution of rice roots and investigate the coupling between roots and soil, wetland rice was selected as the experimental object, and a three-dimensional (3D) growth model of rice root environment-roots (ERoots) based on the parameter Lindenmayer system (L-system) was proposed. ERoots combines a root morphological structure model with a growth model and defines L-system grammar iteration rules with the unit time and unit step length as parameters. At the same time, the basic growth parameters of rice roots were obtained via destructive detection, and 3D growth visualisation of roots was realised via MATLAB. In the soil coupling process, a soil nutrient simulation map was constructed based on the spatial soil characteristics per unit volume, and an adjustment strategy for roots reaching the growth boundary was designed. The flexibility of the model coupled with soil was reflected in the tropisms of root growth, growth rate and root branching strategy. Finally, combined with soil spatial characteristic simulation, geometric growth boundary and 3D root growth model, the ability of 3D growth visualisation of rice roots was verified under three soil conditions: (1) unconfined root growth, (2) confined spatial root growth, and (3) root growth with tropisms. The results indicated that the ERoots root model basically realised coupling with soil and achieved a satisfactory simulation effect in regard to the rice morphological structure. This study provides a reference for 3D growth modelling and visualisation of other crop roots.
期刊介绍:
Biosystems Engineering publishes research in engineering and the physical sciences that represent advances in understanding or modelling of the performance of biological systems for sustainable developments in land use and the environment, agriculture and amenity, bioproduction processes and the food chain. The subject matter of the journal reflects the wide range and interdisciplinary nature of research in engineering for biological systems.