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首页> 外文期刊>Plant and Soil >Root growth in biopores-evaluation with in situ endoscopy
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Root growth in biopores-evaluation with in situ endoscopy

机译：生物孔的根生长-原位内窥镜评估

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摘要

The significance of biopores for nutrient acquisition from the subsoil depends on root-soil contact, which in turn is influenced by root architecture. The aim of this study was to detect differences regarding the architecture and root-soil contact of homorhizous barley roots (Hordeum vulgare L.) and allorhizous oilseed rape roots (Brassica napus L.) growing in biopores. In situ endoscopy was used as a technique that allows non-destructive display of pore wall characteristics and root morphology inside large biopores under field conditions. For both crops, about 85 % of all roots did establish contact to the pore wall. However, according to their different root architecture, the two crops varied in their strategy of resource acquisition: While barley was characterized by thin vertical or ingrowing roots, most of them in direct contact to the pore wall, oilseed rape established contact to the pore wall predominantly via lateral roots. Root morphological and pore wall assessment with in situ endoscopy in combination with detailed studies of soil biochemical and soil physical parameters of the pore wall is considered an essential prerequisite for more precise future modelling of nutrient acquisition and uptake.
机译：生物孔隙对于从地下土壤获取养分的重要性取决于根与土壤的接触，而根与土壤的接触又受根系结构的影响。这项研究的目的是发现在生物孔中生长的同质大麦根（Hordeum vulgare L.）和同种油籽油菜根（Brassica napus L.）的结构和根-土接触的差异。原位内窥镜检查被用作一种技术，可以在野外条件下无损显示大生物孔内的孔壁特征和根部形态。对于这两种作物，约有85％的根确实与孔壁建立了接触。但是，根据不同的根系结构，这两种作物的资源获取策略各不相同：大麦的特征是根系薄而垂直或向内生长，但大多数都直接与孔壁接触，油菜籽与孔壁建立了接触。主要通过侧根。用原位内窥镜进行根系形态和孔壁评估，结合对土壤生物化学和孔壁土壤物理参数的详细研究，被认为是将来对养分获取和吸收进行更精确建模的必要前提。

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