Phenotypic and genotypic diversity analysis of some Egyptian barley cultivars (Hordeum vulgare L.) under different heat stress conditions

• DOI: 10.21608/ejar.2023.194143.1363
• Publication Date: 2023-05-27T17:05:43Z
• Authors: Samah A. Mariey; Omnia S.M. Hashem; Anas H. Ahmed; Karima R. Ahmed; Hayam I.A. Elsawy

Global food security has been disturbed by global climatic changes and increasing human population around the world.Heat stress is one of most imperative abiotic factors that limit barley productivity production.Herein, three different field screening locations were carried out at Sakha, Mallawi New-valley research stations, to identify phenotypic genotypic diversity ten Egyptian cultivars during two consecutive seasons 2019/2020 2020/2021 under temperatures degrees.phenotypic was evaluated using some agrophysiological grain quality characters which contributing yield heat stress.Genotypic Sequence related amplified polymorphism (SRAP) markers as molecular identification.The results showed high temperature enhancement all accelerate flowering an average (11.39 %) induce proline content, catalases, peroxidase enzyme active, crude protein content values (79.95, 40.74, 76.42 8.20%) respectively.However, it had a negative effect on remaining characters.Giza 124, Giza 134, 138, 132 gave mean performance measured being considered tolerance cultivars.Ten SRAP combination primers used where percentage for each primer varied from 50.0% (me2+em5) 83.3% (me5+em1).The highest information (PIC) me5+em1 (0.399), indicating this highly informative be genetic tolerance.A cluster heatmap clustered into main clusters, includes closed together due their response stress, could source in future breeding programs stress.