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Nondestructive Phenomic Tools for the Prediction of Heat and Drought Tolerance at Anthesis in Brassica Species

Plant Phenomics 2019年第1期1卷 42-57页

作者： Sheng Chen Yiming Guo xavier sirault Katia Stefanova Renu Saradadevi Neil CTurner Matthew NNelson Robert TFurbank Kadambot HMSiddique Wallace ACowling The UWA Institute of Agriculture The University of Western AustraliaPerthWA 6001Australia UWA School of Agriculture and Environment The University of Western AustraliaPerthWA 6001Australia High Resolution Plant Phenomics Centre Australian Plant Phenomics FacilityCSIRO Agriculture and FoodCanberraACT 2601Australia ARC Centre of Excellence for Translational Photosynthesis Australian National UniversityCanberraACT 2601Australia

Oilseed Brassica species are vulnerable to heat and drought stress,especially in the early reproductive *** evaluated plant imaging of whole plant and flower tissue,leaf stomatal conductance,leaf and bud temperature,photochemical reflectance index,quantumyield of photosynthesis,and leaf gas exchange for their suitability to detect tolerance to heat(H)and/or drought(D)stress treatments in 12 Brassica genotypes(G).A replicated factorial experiment was set up with 7 d of stress treatment fromthe beginning of anthesis with various levels of three factors H,D,and𝐺.Most phenomics tools detected plant stress as indicated by significant main effects of H,D,and H×*** plant volume was highly correlated with fresh weight changes,suggesting that whole plant imaging may be a useful surrogate for fresh weight in future ***,the maximum carboxylation rate of photosynthesis,increased rapidly on day 1 in H and H+D treatments,and there were significant interactions of G×H and G×*** of genotypes on day 1 inHandH+Dtreatments was positively correlated with their harvested seed *** onday 1 andday3were clustered with seed yield in H and H+D treatments as shown in the heatmaps of genotypic ***,the rate of triose phosphate use,also showed significant positive genotypic correlations with seed yield in H+D *** volume showed significant interactions of G×H and G×D on day 7,and flower volume of genotypes on day 7 inHwas positively correlated with their harvested seed *** were few interactions of G×H or G×D for leaf stomatal conductance,leaf and bud temperature,photochemical reflectance index,and quantum yield of ***,TPU,and volume of flowers are potential nondestructive phenomic traits for heat or combined heat and drought stress tolerance screening in Brassica germplasm.

关键词： Species drought reflectance

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Techniques and platforms for High-Throughput or High Resolution phenotyping of canopies and plants

Techniques and platforms for High-Throughput or High Resolut...

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2017全国植物表型组学研讨会

作者： xavier sirault CSIRO Black Mountain Science and Innovation Park Cnr Clunies Ross St and Barry Dr Acton ACT 2601

Plant Phenotyping is key to understanding the physiological and genetic bases of plant growth and performance and their application for crop *** increase our capacity at measuring plant traits,a range of high-throughput and high-resolution phenotyping platforms have been engineered or made available at the Australian Plant Phenomics *** phenotyping platforms range from automated systems in controlled environments to groundbased or aerial vehicles(manned or unmanned) in the *** commonality in all these platforms is the range of sensors that they integrate,ranging from visible imaging sensors(RGB) to imaging spectroscopy sensors or from thermal infrared(IR) sensors to Light Detection and Ranging(LiDAR) *** availability of and access to these platforms is today transforming phenotyping at scales ranging from individual plots for breeding and physiological studies,to entire farms to characterize *** transform phenotyping data into information,the Australian Plant Phenomics Facility has developed a Collaborative e-infrastructure platform called *** platform allows the user to easily extract information and value from the data collected using phenotyping *** architecture of the platform also serves as a base to allow computational tools developed by other research groups across Australia to be made available to others and/or the Agrobusiness *** presentation will provide a background into some of the plant phenotyping work currently being performed in Australia utilising the services of the APPF’s national infrastructure as well as an insight into the technology and techniques being used.

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Digital imaging approaches for phenotyping whole plant nitrogen and phosphorus response in Brachypodium distachyon

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Journal of Integrative Plant Biology 2014年第8期56卷 781-796页

作者： Richard Poiré Vincent Chochois xavier R.R.sirault John P.Vogel Michelle Watt Robert T.Furbank CSIRO Plant Industry High Resolution Plant Phenomics Centre CSIRO Plant Industry USDA-ARS Western Regional Research Center

This work evaluates the phenotypic response of the model grass （Brachypodium distacbyon （L.） P. Beauv.） to nitrogen and phosphorus nutrition using a combination of imaging techniques and destructive harvest of shoots and roots. Reference line Bd21-3 was grown in pots using 11 phosphorus and 11 nitrogen concentrations to establish a dose-response curve. Shoot biovolume and biomass, root length and biomass, and tissue phosphorus and nitrogen concentrations increased with nutrient concentration. Shoot biovolume, estimated by imaging, was highly correlated with dry weight （R2 〉 0.92） and both biovolume and growth rate responded strongly to nutrient availability. Higher nutrient supply increased nodal root length more than other root types. Photochemical efficiency was strongly reduced by low phosphorus concentrations as early as 1 week after germination, suggesting that this measurement may be suitable for high throughput screening of phosphorus response. In contrast, nitrogen concentration had little effect on photochemical efficiency. Changes in biovolume over time were used to compare growth rates of four accessions in response tonitrogen and phosphorus supply. We demonstrate that a time series image-based approach coupled with mathematical modeling provides higher resolution of genotypic response to nutrient supply than traditional destructive techniques and shows promise for high throughput screening and determina- tion of genomic regions associated with superior nutrient use efficiency.

关键词： Nutrients uptake phenomics photosynthesis root shootCitation: Poire R, Chochois V, sirault XRR, Vogel JP, Watt M, Furbank RT(2o14) Digital imaging approaches for phenotyping whole plantnitrogen and phosphorus response in Brachypodium distachyon.

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