3篇
您的检索式：作者名="Henry T.Nguyen"
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| 1 | Qualification of Soybean Responses to Flooding Stress Using UAV-Based Imagery and Deep Learning显示文摘Soybean is sensitive to flooding stress that may result in poor seed quality and significant yield reduction.Soybean production under flooding could be sustained by developing flood-tolerant cultivars through breeding programs.Conventionally,soybean tolerance to flooding in field conditions is evaluated by visually rating the shoot injury/damage due to flooding stress,which is labor-intensive and subjective to human error.Recent developments of field high-throughput phenotyping technology have shown great potential in measuring crop traits and detecting crop responses to abiotic and biotic stresses.The goal of this study was to investigate the potential in estimating flood-induced soybean injuries using UAV-based image features collected at different flight heights.The flooding injury score(FIS)of 724 soybean breeding plots was taken visually by breeders when soybean showed obvious injury symptoms.Aerial images were taken on the same day using a five-band multispectral and an infrared(IR)thermal camera at 20,50,and 80 m above ground.Five image features,i.e.,canopy temperature,normalized difference vegetation index,canopy area,width,and length,were extracted from the images at three flight heights.A deep learning model was used to classify the soybean breeding plots to five FIS ratings based on the extracted image features.Results show that the image features were significantly different at three flight heights.The best classification performance was obtained by the model developed using image features at 20 m with 0.9 for the five-level FIS.The results indicate that the proposed method is very promising in estimating FIS for soybean breeding. | Jing Zhou Huawei Mou Jianfeng Zhou Md Liakat Ali Heng Ye Pengyin Chen Henry T.Nguyen | 2021 | Plant Phenomics2021，3，1： | 2 |
| 2 | Mobilizing Crop Biodiversity显示文摘Over the past 70 years,the world has witnessed extraordinary growth in crop productivity,enabled by a suite of technological advances,including higher yielding crop varieties,improved farm management,synthetic agrochemicals,and agricultural mechanization.While this'Green Revolution'intensified crop production,and is credited with reducing famine and malnutrition,its benefits were accompanied by several undesirable collateral effects(Pingali,2012).These include a narrowing of agricultural biodiversity,stemming from increased monoculture and greater reliance on a smaller number of crops and crop varieties for the majority of our calories.This reduction in diversity has created vulnerabilities to pest and disease epidemics,climate variation,and ultimately to human health(Harlan,1972). | Susan McCouch Zahra Katy Navabi Michael Abberton Noelle L.Anglin Rosa Lia Barbieri Michael Baum Kirstin Bett Helen Booker Gerald L.Brown Glenn J.Bryan Luigi Cattivelli David Charest Kellye Eversole Marcelo Freitas Kioumars Ghamkhar Dario Grattipaglia Robert Henry Maria Cleria Valadares Inglis Tofazzal Islam Zakaria Kehel Paul J.Kersey Graham J.King Stephen Kresovich Emily Marden Sean Mayes Marie Noelle Ndjiondjiop Henry T.Nguyen Samuel Rezende Paiva Roberto Papa Peter W.B.Phillips Awais Rasheed Christopher Richards Mathieu Flouard Maria Jose Amstalden Sampaio Uwe Scholz Paul D.Shaw Brad Sherman S.Evan Staton Nils Stein Jan Svensson Mark Tester Jose Francisco Montenegro Valls Rajeev Varshney Stephen Visscher Eric von Wettberg Robbie Waugh Peter Wenzl Loren H.Rieseberg | 2020 | Molecular Plant2020，13，10： | 0 |
| 3 | Evaluation of high yielding soybean germplasm under water limitation显示文摘Limited information is available for soybean root traits and their plasticity under drought stress. To date, no studies have focused on examining diverse soybean germplasm for regulation of shoot and root response under water limited conditions across varying soil types. In this study,17 genetically diverse soybean germplasm lines were selected to study root response to water limited conditions in clay(trial 1) and sandy soil(trial 2) in two target environments.Physiological data on shoot traits was measured at multiple crop stages ranging from early vegetative to pod filling. The phenotypic root traits, and biomass accumulation data are collected at pod filling stage. In trial 1, the number of lateral roots and forks were positively correlated with plot yield under water limitation and in trial 2, lateral root thickness was positively correlated with the hill plot yield. Plant Introduction(PI) 578477 A and 088444 were found to have higher later root number and forks in clay soil with higher yield under water limitation. In sandy soil, PI458020 wa found to have a thicker lateral root system and higher yield under water limitation. The genotypes identified in this study could be used to enhance drought tolerance of elite soybean cultivars through improved root traits specific to targe environments. | Silvas J.Prince Mackensie Murphy Raymond N.Mutava Zhengzhi Zhang Na Nguyen Yoon Ha Kim Safiullah M.Pathan Grover J.Shannon Babu Valliyodan Henry T.Nguyen | 2016 | Journal of Integrative Plant Biology2016，58，5： | 0 |
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