{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,17]],"date-time":"2026-01-17T17:16:50Z","timestamp":1768670210431,"version":"3.49.0"},"reference-count":63,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2024,4,18]],"date-time":"2024-04-18T00:00:00Z","timestamp":1713398400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Texas A&amp;M AgriLife Research and Texas Water Development Board Grant","award":["2013582450"],"award-info":[{"award-number":["2013582450"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Sugarcane breeding for drought tolerance is a sustainable strategy to cope with drought. In addition to biotechnology, high-throughput phenotyping has become an emerging tool for plant breeders. The objectives of the present study were to (1) identify drought-tolerant cultivars using vegetation indices (VIs), compared to the traditional method and (2) assess the accuracy of VIs-based prediction model estimating stomatal conductance (Gs) and chlorophyll content (Chl). A field trial was arranged in a randomized complete block design, consisting of seven cultivars of sugarcane. At the tillering and elongation stages, irrigation was withheld, and then furrow irrigation was applied to relieve sugarcane from stress. The physiological assessment measuring Gs and Chl using a handheld device and VIs were recorded under stress and recovery periods. The results showed that the same cultivars were identified as drought-tolerant cultivars when VIs and traditional methods were used for identification. Likewise, the results derived from genotype by trait biplot and heatmap were comparable, in which TCP93-4245 and CP72-1210 cultivars were classified as tolerant cultivars, while sensitive cultivars were CP06-2400 and CP89-2143 for both physiological parameters and VIs-based identification. In the prediction model, the random forest outperformed linear models in predicting the performance of cultivars in untested crops\/environments for both Gs and Chl. In contrast, it underperformed linear models in the tested crops\/environments. The identification of tolerant cultivars through prediction models revealed that at least two out of three cultivars had consistent rankings in both measured and predicted outcomes for both traits. This study shows the possibility of using UAS mounted with sensors to assist plant breeders in their decision-making.<\/jats:p>","DOI":"10.3390\/rs16081433","type":"journal-article","created":{"date-parts":[[2024,4,18]],"date-time":"2024-04-18T06:21:12Z","timestamp":1713421272000},"page":"1433","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Assessing Drought Stress of Sugarcane Cultivars Using Unmanned Vehicle System (UAS)-Based Vegetation Indices and Physiological Parameters"],"prefix":"10.3390","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1491-954X","authenticated-orcid":false,"given":"Ittipon","family":"Khuimphukhieo","sequence":"first","affiliation":[{"name":"Department of Plant Production Technology, Kalasin University, Kalasin 46000, Thailand"},{"name":"Department of Soil and Crop Sciences, Texas A&M University, College Station, TX 77843, USA"},{"name":"Texas A&M AgriLife Research, Weslaco, TX 78596, USA"}]},{"given":"Mahendra","family":"Bhandari","sequence":"additional","affiliation":[{"name":"Department of Soil and Crop Sciences, Texas A&M University, College Station, TX 77843, USA"},{"name":"Texas A&M AgriLife Research and Extension Center, Corpus Christi, TX 78406, USA"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5984-6826","authenticated-orcid":false,"given":"Juan","family":"Enciso","sequence":"additional","affiliation":[{"name":"Texas A&M AgriLife Research, Weslaco, TX 78596, USA"},{"name":"Department of Biological and Agricultural Engineering, Texas A&M University, College Station, TX 77843, USA"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7628-5549","authenticated-orcid":false,"given":"Jorge A.","family":"da Silva","sequence":"additional","affiliation":[{"name":"Department of Soil and Crop Sciences, Texas A&M University, College Station, TX 77843, USA"},{"name":"Texas A&M AgriLife Research, Weslaco, TX 78596, USA"}]}],"member":"1968","published-online":{"date-parts":[[2024,4,18]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"nwad049","DOI":"10.1093\/nsr\/nwad049","article-title":"Global Variations in Critical Drought Thresholds that Impact Vegetation","volume":"10","author":"Li","year":"2023","journal-title":"Natl. 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