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RhizoVision Crown:An Integrated Hardware and Software Platform for Root Crown Phenotyping

Plant Phenomics 2020年第1期2卷 25-39页

作者： Anand Seethepalli Haichao Guo Xiuwei Liu marcus Griffiths hussien Almtarfi Zenglu Li Shuyu Liu Alina Zare Felix B.Fritschi Elison B.Blancaflor Xue-Feng ma Larry M.York noble Research Institute LLC2510 Sam Noble ParkwayArdmoreOK 73401USA Division of Plant Sciences University of MissouriColumbiaMO 65201USA Crop and Soil Sciences University of GeorgiaAthensGA 30602USA Texas A&M AgriLife Research Texas A&M University SystemAmarilloTX 79106USA Department of Electrical and Computer Engineering University of FloridaGainesvilleFL 32601USA

Root crown phenotyping measures the top portion of crop root systems and can be used for marker-assisted breeding,genetic mapping,and understanding how roots influence soil resource *** imaging protocols and image analysis programs exist,but they are not optimized for high-throughput,repeatable,and robust root crown *** RhizoVision Crown platform integrates an imaging unit,image capture software,and image analysis software that are optimized for reliable extraction of measurements from large numbers of root *** hardware platform utilizes a backlight and a monochrome machine vision camera to capture root crown *** RhizoVision Imager and RhizoVision Analyzer are free,open-source software that streamline image capture and image analysis with intuitive graphical user *** RhizoVision Analyzer was physically validated using copper wire,and features were extensively validated using 10,464 groundtruth simulated images of dicot and monocot root *** platform was then used to phenotype soybean and wheat root crowns.A total of 2,799 soybean(Glycine max)root crowns of 187 lines and 1,753 wheat(Triticum aestivum)root crowns of 186 lines were *** component analysis indicated similar correlations among features in both *** maximum heritability was 0.74 in soybean and 0.22 in wheat,indicating that differences in species and populations need to be *** integrated RhizoVision Crown platform facilitates high-throughput phenotyping of crop root crowns and sets a standard by which open plant phenotyping platforms can be benchmarked.

关键词： crown utilize intuitive

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Coconut Fibre Effect on Fresh and Thermo Gravimetric Properties to Mitigate Spalling of Self-Compacting Concrete at Elevated Temperatures

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Open Journal of Civil Engineering 2015年第3期5卷 328-338页

作者： Qahir n. S. AL-Kadi Arabi n. S. AL Qadi Kamal nasharuddin Bin Mustapha Sivakumar naganathan Zakaria Bin Che Muda Department of Earth Sciences and Environment The Hashemite University Zarqa Jordan Department of Civil Engineering AL Hussien Bin Talal University Ma’an Jordan Department of Civil Engineering Universiti Tenaga National Selangor Malaysia

In this research the effect of Coconut (Cn) fibre on the fresh and thermo gravimetric properties of self-compacting concrete (SCC) at elevated temperatures was investigated experimentally and statistically. The mixtures containing cement, water, fly ash, fine aggregate, coarse aggregate and super plasticizer with the addition of Cn fibres (0%, 0.05%, 0.10 %, and 0.15%) by volume of the mixtures were prepared. The fresh and thermo gravimetric properties of the SCC specimens were determined after mixing at elevated temperatures (200℃, 400℃, and 600℃) testing in a laboratory. Three control specimens with 0% Cn fibres were used for every mixture of SCC. Regression models were developed to determine the responses. The optimum of the Cn fibres was measured.

关键词： Coconut Fibres Concrete Hardened Density Weight Loss Compressive Strength

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