Advanced search    

Search: authors:"A. Glyn Bengough"

12 papers found.
Use AND, OR, NOT, +word, -word, "long phrase", (parentheses) to fine-tune your search.

Developmental morphology of cover crop species exhibit contrasting behaviour to changes in soil bulk density, revealed by X-ray computed tomography

suggestions for improvement to the manuscript. Author Contributions Data curation: Karl Ritz. Conceptualization: Jasmine E. Burr-Hersey, Sacha J. Mooney, A. Glyn Bengough, Karl Ritz. Formal analysis: Jasmine ... E. Burr-Hersey, Sacha J. Mooney, Karl Ritz. Funding acquisition: Karl Ritz. Investigation: Jasmine E. Burr-Hersey. Methodology: Jasmine E. Burr-Hersey, Sacha J. Mooney, A. Glyn Bengough, Karl Ritz

3D deformation field in growing plant roots reveals both mechanical and biological responses to axial mechanical forces

Strong regions and physical barriers in soils may slow root elongation, leading to reduced water and nutrient uptake and decreased yield. In this study, the biomechanical responses of roots to axial mechanical forces were assessed by combining 3D live imaging, kinematics and a novel mechanical sensor. This system quantified Young’s elastic modulus of intact poplar roots (32MPa...

Root hairs aid soil penetration by anchoring the root surface to pore walls

The physical role of root hairs in anchoring the root tip during soil penetration was examined. Experiments using a hairless maize mutant (Zea mays: rth3–3) and its wild-type counterpart measured the anchorage force between the primary root of maize and the soil to determine whether root hairs enabled seedling roots in artificial biopores to penetrate sandy loam soil (dry bulk...

Analysis of root growth from a phenotyping data set using a density-based model

Major research efforts are targeting the improved performance of root systems for more efficient use of water and nutrients by crops. However, characterizing root system architecture (RSA) is challenging, because roots are difficult objects to observe and analyse. A model-based analysis of RSA traits from phenotyping image data is presented. The model can successfully back...

Contributions of roots and rootstocks to sustainable, intensified crop production

Sustainable intensification is seen as the main route for meeting the world’s increasing demands for food and fibre. As demands mount for greater efficiency in the use of resources to achieve this goal, so the focus on roots and rootstocks and their role in acquiring water and nutrients, and overcoming pests and pathogens, is increasing. The purpose of this review is to explore...

Root growth models: towards a new generation of continuous approaches

Lionel Dupuy 0 Peter J. Gregory 0 A. Glyn Bengough 0 0 Scottish Crop Research Institute, Invergowrie , Dundee DD2 5DA , UK Models of root system growth emerged in the early 1970s, and were based on

Root hairs improve root penetration, root–soil contact, and phosphorus acquisition in soils of different strength

Root hairs are a key trait for improving the acquisition of phosphorus (P) by plants. However, it is not known whether root hairs provide significant advantage for plant growth under combined soil stresses, particularly under conditions that are known to restrict root hair initiation or elongation (e.g. compacted or high-strength soils). To investigate this, the root growth and P...

Root elongation, water stress, and mechanical impedance: a review of limiting stresses and beneficial root tip traits

Root elongation in drying soil is generally limited by a combination of mechanical impedance and water stress. Relationships between root elongation rate, water stress (matric potential), and mechanical impedance (penetration resistance) are reviewed, detailing the interactions between these closely related stresses. Root elongation is typically halved in repacked soils with...

Root cap removal increases root penetration resistance in maize (Zea mays L.)

The root cap assists the passage of the root through soil by means of its slimy mucilage secretion and by the sloughing of its outer cells. The root penetration resistance of decapped primary roots of maize (Zea mays L. cv. Mephisto) was compared with that of intact roots in loose (dry bulk density 1.0 g cm–3; penetration resistance 0.06 MPa) and compact soil (1.4 g cm–3...

Root responses to soil physical conditions; growth dynamics from field to cell

Root growth in the field is often slowed by a combination of soil physical stresses, including mechanical impedance, water stress, and oxygen deficiency. The stresses operating may vary continually, depending on the location of the root in the soil profile, the prevailing soil water conditions, and the degree to which the soil has been compacted. The dynamics of root growth...