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Exploration of Genetic Pattern of Phenological Traits in Wheat (Triticum aestivum L.) under Drought Stress

Phyton-International Journal of Experimental Botany 2022年第12期91卷 2733-2758页

作者： Iqra Ishaaq Muhammad Umer Farooq Syeda Anjum Tahira Rizwana Maqbool Celaleddin Barutçular Muhammad Yasir Saira Bano Zaid Ulhassan ghassan zahid Muhammad Ahsan Asghar Sajad Hussain Kocsy Gabor Ulkar Ibrahimova Jianqing Zhu Anshu Rastogi Department of Plant Breeding and Genetics Faculty of AgricultureUniversity of Agriculture FaisalabadFaisalabad38040Pakistan Department of Botany Faculty of Life SciencesUniversity of OkaraOkara56130Pakistan Department of Field Crops Faculty of AgricultureÇukurova UniversityAdana01330Turkey Department of Crop Genetics and Breeding Rice Research InstituteSichuan Agricultural UniversityChengdu Campus611130China Key Laboratory of Agriculture Products Improvement Zhejiang Agriculture and Forestry UniversityHangzhou311300China Institute of Crop Science Ministry of Agriculture and Rural Affairs Key Laboratory of Spectroscopy SensingZhejiang UniversityHangzhou310058China Department of Biotechnology Institute of Natural and Applied SciencesÇukurova UniversityAdana01330Turkey Agricultural Institute ELKH Centre for Agricultural ResearchMartonvásár2462Hungary College of Agronomy Sichuan Agricultural UniversityYa’an611130China Institute of Molecular Biology and Biotechnologies Azerbaijan National Academy of SciencesBakuAZ 1073Azerbaijan Research Institute of Crop Husbandry Ministry of Agriculture of the Azerbaijan RepublicBakuAZ 1098Azerbaijan Laboratory of Bioclimatology Department of Ecology and Environmental ProtectionPoznan University of Life SciencesPoznan60-649Poland

Drought is the major detrimental environmental factor for wheat(Triticum aestivum L.)*** exploration of genetic patterns underlying drought tolerance is of great *** we report the gene actions controlling the phenological traits using the line×tester model studying 27 crosses and 12 parents under normal irrigation and drought *** results interpreted via multiple analysis(mean performance,correlations,principal component,genetic analysis,heterotic and heterobeltiotic potential)disclosed highly significant differences among *** phenological waxiness traits(glume,boom,and sheath)were strongly *** leaf area exhibits a positive association with peduncle and spike length under *** growing degree days(heat-units)greatly influence spikelets and grains per spike,however,the grain yield/plant was significantly reduced(17.44 g to 13.25 g)under *** principal components based on eigenvalue indicated significant PCs(first-seven)accounted for 79.9%and 73.9%of total variability under normal irrigation and drought,*** investigated yield traits showed complex genetic *** genetic advance confronted a moderate to high heritability for spikelets/spike and grain yield/*** traits conditioned by dominant genetic effects in normal irrigation were inversely controlled by additive genetic effects under drought and vice *** magnitude of dominance effects for phenological and yield traits,i.e.,leaf twist,auricle hairiness,grain yield/plant,spikelets,and grains/spike suggests that selection by the pedigree method is appropriate for improving these traits under normal irrigation conditions and could serve as an indirect selection index for improving yield-oriented traits in wheat populations for drought ***,the phenotypic selection could be more than effective for traits conditioned by additive genetic effects under *** suggest five significant cross combinations base

关键词： Wheat drought phenological traits genetic variability heterotic and heterobeltiotic potential

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