10.3389/fpls.2018.00893.s004 Giuseppe E. Condorelli Giuseppe E. Condorelli Marco Maccaferri Marco Maccaferri Maria Newcomb Maria Newcomb Pedro Andrade-Sanchez Pedro Andrade-Sanchez Jeffrey W. White Jeffrey W. White Andrew N. French Andrew N. French Giuseppe Sciara Giuseppe Sciara Rick Ward Rick Ward Roberto Tuberosa Roberto Tuberosa Presentation_4_Comparative Aerial and Ground Based High Throughput Phenotyping for the Genetic Dissection of NDVI as a Proxy for Drought Adaptive Traits in Durum Wheat.PPTX Frontiers 2018 Triticum turgidum L. subsp. durum durum wheat drought high-throughput phenotyping UAV NDVI GWAS QTL 2018-12-24 13:21:14 Presentation https://frontiersin.figshare.com/articles/presentation/Presentation_4_Comparative_Aerial_and_Ground_Based_High_Throughput_Phenotyping_for_the_Genetic_Dissection_of_NDVI_as_a_Proxy_for_Drought_Adaptive_Traits_in_Durum_Wheat_PPTX/7505048 <p>High-throughput phenotyping platforms (HTPPs) provide novel opportunities to more effectively dissect the genetic basis of drought-adaptive traits. This genome-wide association study (GWAS) compares the results obtained with two Unmanned Aerial Vehicles (UAVs) and a ground-based platform used to measure Normalized Difference Vegetation Index (NDVI) in a panel of 248 elite durum wheat (Triticum turgidum L. ssp. durum Desf.) accessions at different growth stages and water regimes. Our results suggest increased ability of aerial over ground-based platforms to detect quantitative trait loci (QTL) for NDVI, particularly under terminal drought stress, with 22 and 16 single QTLs detected, respectively, and accounting for 89.6 vs. 64.7% phenotypic variance based on multiple QTL models. Additionally, the durum panel was investigated for leaf chlorophyll content (SPAD), leaf rolling and dry biomass under terminal drought stress. In total, 46 significant QTLs affected NDVI across platforms, 22 of which showed concomitant effects on leaf greenness, 2 on leaf rolling and 10 on biomass. Among 9 QTL hotspots on chromosomes 1A, 1B, 2B, 4B, 5B, 6B, and 7B that influenced NDVI and other drought-adaptive traits, 8 showed per se effects unrelated to phenology.</p>