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Open AccessArticle

Genetic Parameters and QTLs for Total Phenolic Content and Yield of Wheat Mapping Population of CSDH Lines under Drought Stress

1
Polish Academy of Sciences, The Franciszek Górski Institute of Plant Physiology, 30-239 Kraków, Niezapominajek 21, Poland
2
Faculty of Biology, Belgrade University, Studentski trg 16, 11000 Belgrade, Serbia
3
Department of Plant Genetics, Breeding and Biotechnology, West-Pomeranian University of Technology, Szczecin ul. Słowackiego 17, 71-434 Szczecin, Poland
4
Department of Mathematical and Statistical Methods, Poznań University of Life Sciences, Wojska Polskiego 28, 60-637 Poznań, Poland
*
Author to whom correspondence should be addressed.
Int. J. Mol. Sci. 2019, 20(23), 6064; https://doi.org/10.3390/ijms20236064
Received: 16 October 2019 / Revised: 29 November 2019 / Accepted: 30 November 2019 / Published: 1 December 2019
(This article belongs to the Special Issue Wheat and Barley: Acclimatization to Abiotic and Biotic Stress)
A doubled haploid population of 94 lines from the Chinese Spring × SQ1 wheat cross (CSDH) was used to evaluate additive and epistatic gene action effects on total phenolic content, grain yield of the main stem, grain number per plant, thousand grain weight, and dry weight per plant at harvest based on phenotypic and genotypic observations of CSDH lines. These traits were evaluated under moderate and severe drought stress and compared with well-watered plants. Plants were grown in pots in an open-sided greenhouse. Genetic parameters, such as additive and epistatic effects, affecting total phenolic content, were estimated for eight year-by-drought combinations. Twenty-one markers showed a significant additive effect on total phenolic content in all eight year-by-drought combinations. These markers were located on chromosomes: 1A, 1B, 2A, 2B, 2D, 3A, 3B, 3D, 4A, and 4D. A region on 4AL with a stable QTL controlling the phenolic content, confirmed by various statistical methods is particularly noteworthy. In all years and treatments, three markers significantly linked to QTLs have been identified for both phenols and yield. Thirteen markers were coincident with candidate genes. Our results indicated the importance of both additive and epistatic gene effects on total phenolic content in eight year-by-drought combinations. View Full-Text
Keywords: doubled haploid lines; epistasis; genetic map; water deprivation stress; Triticum aestivum doubled haploid lines; epistasis; genetic map; water deprivation stress; Triticum aestivum
MDPI and ACS Style

Czyczyło-Mysza, I.M.; Cyganek, K.; Dziurka, K.; Quarrie, S.; Skrzypek, E.; Marcińska, I.; Myśków, B.; Dziurka, M.; Warchoł, M.; Kapłoniak, K.; Bocianowski, J. Genetic Parameters and QTLs for Total Phenolic Content and Yield of Wheat Mapping Population of CSDH Lines under Drought Stress. Int. J. Mol. Sci. 2019, 20, 6064.

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