气候变化领域集成服务门户(CCPortal): Application of high-throughput plant phenotyping for assessing biophysical traits and drought response in two oak species under controlled environment

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DOI	10.1016/j.foreco.2020.118101
	Application of high-throughput plant phenotyping for assessing biophysical traits and drought response in two oak species under controlled environment
	Mazis A.; Choudhury S.D.; Morgan P.B.; Stoerger V.; Hiller J.; Ge Y.; Awada T.
发表日期	2020
ISSN	0378-1127
卷号	465
英文摘要	Early plant selection for desirable traits is important in tree improvement programs and sustainable forest management. In this study, we demonstrate the use of image based high-throughput plant phenotyping (HTPP, LemnaTec 3D Scanalyzer, Germany), with Red, Green, Blue (RGB), and hyperspectral cameras, to quantify Quercus bicolor and Quercus prinoides seedlings growth and development [plant height, projected leaf area (LA), plant/canopy width, ConvexHull, and plant aspect ratio], and assess their response to a dry-down period, under controlled environment. HTPP images were validated against low throughput measurements, including gas exchange, leaf spectral properties, and morphological traits. Using HTPP, we recorded significant differences in growth dynamic in examined species, with faster initial growth rate early in the growing season, higher photosynthetic rates, larger LA, and seedling dimension, in Q. bicolor, compared to Q. prinoides. This has ecological implications on species responses to shading and timing of drought stress, as well as their competitive relationship with each other and with other species under changing climate. HTTP showed that both growth and leaf expansion ceased under dry-down treatment. Image derived and measured morphological traits were highly and significantly correlated under both well-watered and dry-down conditions for both species. To obtain meaningful physiological information using spectrometry, we calculated 12 vegetation indices (VIs) from both HTPP and handheld spectrometers. Vogelmann and Maccioni indices had the highest correlations across methods, suggesting their potential use for assessing oak seedlings performance and health. Our results emphasized the importance of VIs ground truthing, since VIs performance can vary significantly between species and treatments. HTPP tools can successfully be used to effectively assess forest seedlings of the two Quercus species, important for early plant selection for forest management purposes and tree improvement programs. © 2020 University of Nebraska-Lincoln
关键词	Aspect ratio Drought Seed Vegetation Gas exchange HyperSpectral Multi-spectral Quercus Tree improvement Vegetation index Forestry assessment method biophysics deciduous tree drought resistance environmental conditions forest management gas exchange growing season growth and development morphology phenotype seedling spectral analysis sustainable development vegetation index Drought Forestry Growth Rate Plants Quercus Seedlings Throughput Germany Quercus Quercus bicolor Quercus prinoides
语种	英语
来源机构	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/132842
推荐引用方式 GB/T 7714	Mazis A.,Choudhury S.D.,Morgan P.B.,et al. Application of high-throughput plant phenotyping for assessing biophysical traits and drought response in two oak species under controlled environment[J]. Forest Ecology and Management,2020,465.
APA	Mazis A..,Choudhury S.D..,Morgan P.B..,Stoerger V..,Hiller J..,...&Awada T..(2020).Application of high-throughput plant phenotyping for assessing biophysical traits and drought response in two oak species under controlled environment.,465.
MLA	Mazis A.,et al."Application of high-throughput plant phenotyping for assessing biophysical traits and drought response in two oak species under controlled environment".465(2020).