Evaluation of Some Egyptian Barley Cultivars Resistance to Foliar Fungal Diseases in Drought-Prone Environments under Field Conditions  

作　　者：Sally Negm Badwy Mohdly Motrih Al-Mutiry Wael Shehata Karima Ahmed Mohamed Abou-Zeid Rana Elessawy Ashgan Abdel-Azim Amr Abdel-Fattah Amani Omar Abuzaid Enas A.Almanzalawi Tahani M.Alqahtani Shouaa A.Alrobaish Diaa Abd El Moneim Ahmed M.Abbas Mohammed O.Alshaharni Huda Alghamdi Shaimaa G.Salama Kairy Amer 

机构地区：[1]Basic Sciences and Their Applications Unit,Health Specialties,Applied College,King Khalid,62529,Saudi Arabia [2]Plant Pathology Research Institute,Agriculture Research Center,Giza,12619,Egypt [3]Department of Geography and Environmental Sustainability,College of Humanities and Social Sciences,Princess Nourah bint Abdulrahman University,Riyadh,11671,Saudi Arabia [4]Department of Agricultural Biotechnology,College of Agriculture and Food Sciences,King Faisal University,Al-Ahsa,31982,Saudi Arabia [5]Field Crops Research Institute,Agriculture Research Center,Giza,12619,Egypt [6]Department of Plant Pathology,University of Florida,Gainesville,FL 32611-0180,USA [7]Department of Biological Sciences,Faculty of Science,King Abdulaziz University,Jeddah,21589,Saudi Arabia [8]Department of Biology,College of Science,Qassim University,Buraydah,52571,Saudi Arabia [9]Department of Plant Production(Genetic Branch),Faculty of Environmental Agricultural Sciences,Arish University,El-Arish,45511,Egypt [10]Department of Biology,College of Science,King Khalid University,Abha,61421,Saudi Arabia [11]Department of Botany and Microbiology,Faculty of Science,South Valley University,Qena,83523,Egypt [12]Department of Botany and Microbiology,Faculty of Science,Damanhour University,Damanhour,22511,Egypt

出　　处：《Phyton-International Journal of Experimental Botany》2025年第2期347-377,共31页国际实验植物学杂志(英文)

基　　金：The authors express their appreciation to the Deanship of Research and Graduate Studies at King Khalid University for funding this work under grant number RGP2/233/45;the support provided by the Deanship of Scientific Research,Vice Presidency for Graduate Studies and Scientific Research at King FaisalUniversity,Saudi Arabia,under Project No.KFU242905;funding from Princess Nourah bint Abdulrahman University through the Research Supporting Project Number PNURSP2025R241 in Riyadh,Saudi Arabia.

摘　　要：Barley(Hordeum vulgare L.)is a significant global crop that thrives in various climatic and drought-stress conditions.Furthermore,increased drought intervals and more significant weather variability resulting from climate change can affect the severity of plant diseases.Therefore,two primary objectives of integrated disease management regarding climate change are identifying cultivars resistant to foliar diseases and understanding disease progression under abiotic stress.In the current study,we assessed the quantitative foliar disease resistance of 17 commercial barley cultivars under both normal and water stress conditions over two growing seasons(from 2020/21 to 2021/22).The findings demonstrated a reduced incidence of foliar fungal diseases(leaf rust,net blotch,and powdery mildew)under severe drought stress relative to standard irrigated field conditions.The barley cultivars(Giza 130,Giza 131,and Giza 133)demonstrated significant differences across all disease resistance indices.In addition,the study aimed to molecularly characterize 17 commercial barley varieties using single-cell DNA testing(SCoT)to identify genetic polymorphism and specific markers for each genotype.Eight SCoT primers were employed to investigate the genetic polymorphism among 17 barley varieties.Furthermore,these cultivars exhibited optimal performance for the majority of agricultural attributes examined,both under normal and water-stressed conditions.

关 键 词：Powdery mildew net blotch leaf rust DROUGHT combined stress tolerance molecular markers SCoT 

分 类 号：S51[农业科学—作物学]