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LiDAR Is Effective in Characterizing Vine Growth and Detecting Associated Genetic Loci

Plant Phenomics 2023年第4期5卷 836-851页

作者： Elsa Chedid Komlan Avia vincent dumas Lionel Ley Nicolas Reibel Gisèle Butterlin Maxime Soma Raul Lopez-Lozano Frédéric Baret Didier Merdinoglu Éric Duchêne INRAE University of StrasbourgUMR SVQV28rue de Herrlisheim68000 ColmarFrance INRAE UEAV28rue de Herrlisheim68000 ColmarFrance INRAE Aix-Marseille UniversitéUMR RECOVER3275 Route de Cézanne13182 Aix-en-ProvenceFrance INRAE Avignon UniversitéUMR EMMAHUMT CAPTE228route de l'aérodrome84914 AvignonFrance

The strong societal demand to reduce pesticide use and adaptation to climate change challenges the capacities of phenotyping new varieties in the ***-throughput phenotyping is a way to obtain meaningful and reliable information on hundreds of genotypes in a limited *** evaluated traits related to growth in 209 genotypes from an interspecific grapevine biparental cross,between IJ119,a local genitor,and Divona,both in summer and in winter,using several methods:fresh pruning wood weight,exposed leaf area calculated from digital images,leaf chlorophyll concentration,and LiDAR-derived apparent *** high-density genetic information obtained by the genotyping by sequencing technology(GBS),we detected 6 regions of the grapevine genome[quantitative trait loci(QTL)]associated with the variations of the traits in the *** detection of statistically significant QTLs,as well as correlations(R^(2))with traditional methods above 0.46,shows that LiDAR technology is effective in characterizing the growth features of the *** calculated with LiDAR-derived total canopy and pruning wood volumes were high,above 0.66,and stable between growing *** variables provided genetic models explaining up to 47%of the phenotypic variance,which were better than models obtained with the exposed leaf area estimated from images and the destructive pruning weight *** results highlight the relevance of LiDAR-derived traits for characterizing genetically induced differences in grapevine growth and open new perspectives for high-throughput phenotyping of grapevines in the vineyard.

关键词： LiDAR traits hundreds

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Postural spinal balance defined by net intersegmental moments: Results of a biomechanical approach and experimental errors measurement

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World Journal of Orthopedics 2015年第11期6卷 983-990页

作者： Benjamin Blondel Elke Viehweger Bertrand Moal Patrick Tropiano Jean-Luc Jouve Virginie Lafage Raphael dumas Stéphane Fuentes Gérard Bollini vincent Pomero Laboratoire d’analyse du mouvement Spine UnitUniversité Aix-Marseille Ecole Doctorale 463 Sciences du Mouvement HumainUniversité Aix-Marseille Department of Spine Surgery Hospital for Joint DiseasesNew-York University Université de Lyon IFSTTAR LBMC Université Lyon 1 LBMC

AIM: To describe initial results and experimental error measurement of a protocol analyzing Human posture through sagittal intersegmental moments. METHODS: Postural analysis has been recently improved by development of three-dimensional radiographic imaging systems. However, in various situations such as global sagittal anterior malalignment interpretation of radiographs may not represent the real alignment of the subject. The aim of this study was to present initial results of a 3D biomechanical protocol. This protocol isobtained in a free standing position and characterizes postural balance by measurement of sagittal intersegmental net moments. After elaboration of a specific marker-set, 4 successive recordings were done on two volunteers by three different operators during three sessions in order to evaluate the experimental error measurement. A supplementary acquisition in a "radiographic" posture was also obtained. Once the data acquired, joint center, length, anatomical frame and the center of mass of each body segment was calculated and a mass affected. Sagittal net intersegmental moments were computed in an ascending manner from ground reaction forces at the ankles, knees, hips and the lumbosacral and thoraco-lumbar spinal junctions. Cervicothoracic net intersegmental moment was calculated in a descending ***: Based on average recordings, clinical interpretation of net intersegmental moments(in N.m) showed a dorsal flexion on the ankles(8.6 N.m), a flexion on the knees(7.5 N.m) and an extension on the hips(8.5 N.m). On the spinal junctions, it was flexion moments: 0.34 N.m on the cervico-thoracic; 6.7 N.m on the thoraco-lumbar and 0.65 N.m on the lumbo-sacral. Evaluation of experimental error measurement showed a small inter-trial error(intrinsic variability), with higher inter-session and inter-therapist errors but without important variation between them. For one volunteer the "radiographic" posture was associated to significant changes compared

关键词： Posture Sagittal alignement Biomechanical evaluation Intersegmental net moments

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