Screening of Wheat (Triticum aestivum L.) Genotypes for Drought Tolerance through Agronomic and Physiological Response

作者：Ali Ahmad, Zubair Aslam, Talha Javed, Sadam Hussain, Ali Raza, Rubab Shabbir, Freddy Mora, Tasbiha Saeed, Faisal Zulfiqar, Muhammad Moaaz Ali, Muhammad Nawaz, Muhammad Rafiq, Hany S. Osman, Mohammed Albaqami, Mohamed A. A. Ahmed, Muhammad Tauseef · 发表于：Agronomy · 年份：2022 · DOI：10.3390/agronomy12020287 · 被引用次数：166 · 研究领域：Crop Yield and Soil Fertility、Plant responses to water stress、Plant Stress Responses and Tolerance

Water scarcity is a major challenge to wheat productivity under changing climate conditions, especially in arid and semi-arid regions. During recent years, different agronomic, physiological and molecular approaches have been used to overcome the problems related to drought stress. Breeding approaches, including conventional and modern breeding, are among the most efficient options to overcome drought stress through the development of new varieties adapted to drought. Growing drought-tolerant wheat genotypes may be a sustainable option to boost wheat productivity under drought stress conditions. Therefore, the present study was conducted with the aim to screen different wheat genotypes based on stress tolerance levels. For this purpose, eleven commonly cultivated wheat genotypes (V1 = Akbar-2019, V2 = Ghazi-2019, V3 = Ujala-2016, V4 = Zincol-2016, V5 = Anaj-2017, V6 = Galaxy-2013, V7 = Pakistan-2013, V8 = Seher-2006, V9 = Lasani-2008, V10 = Faisalabad-2008 and V11 = Millat-2011) were grown in pots filled with soil under well-watered (WW, 70% of field capacity) and water stress (WS, 35% of field capacity) conditions. Treatments were arranged under a completely randomized design (CRD) with three replicates. Data on yield and yield-related traits (tillers/plant, spikelets/spike, grains/spike, 100 grain weight, seed and biological yield) and physio-biochemical (chlorophyll contents, relative water content, membrane stability index, leaf nitrogen, phosphorus, and potassium content...