title: QTLs for earliness and yield-forming traits in the Lubuski × CamB barley RIL population under various water regimes.
abstract: Drought has become more frequent in Central Europe causing large losses in cereal yields, especially of spring crops. The development of new varieties with increased tolerance to drought is a key tool for improvement of agricultural productivity. Material for the study consisted of 100 barley recombinant inbred lines (RILs) (LCam) derived from the cross between Syrian and European parents. The RILs and parental genotypes were examined in greenhouse experiments under well-watered and water-deficit conditions. During vegetation the date of heading, yield and yield-related traits were measured. RIL population was genotyped with microsatellite and single nucleotide polymorphism markers. This population, together with two other populations, was the basis for the consensus map construction, which was used for identification of quantitative trait loci (QTLs) affecting the traits. The studied lines showed a large variability in heading date. It was noted that drought-treatment negatively affected the yield and its components, especially when applied at the flag leaf stage. In total, 60 QTLs were detected on all the barley chromosomes. The largest number of QTLs was found on chromosome 2H. The main QTL associated with heading, located on chromosome 2H (Q.HD.LC-2H), was identified at SNP marker 5880-2547, in the vicinity of Ppd-H1 gene. SNP 5880-2547 was also the closest marker to QTLs associated with plant architecture, spike morphology and grain yield. The present study showed that the earliness allele from the Syrian parent, as introduced into the genome of an European variety could result in an improvement of barley yield performance under drought conditions.
authors: Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479, Poznań, Poland.
authors: Piotr
authors: P
authors: Ogrodowicz
authors: Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479, Poznań, Poland.
authors: Tadeusz
authors: T
authors: Adamski
authors: Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479, Poznań, Poland.
authors: Krzysztof
authors: K
authors: Mikołajczak
authors: Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479, Poznań, Poland.
authors: Anetta
authors: A
authors: Kuczyńska
authors: Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479, Poznań, Poland.
authors: Maria
authors: M
authors: Surma
authors: Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479, Poznań, Poland.
authors: Paweł
authors: P
authors: Krajewski
authors: Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479, Poznań, Poland.
authors: Aneta
authors: A
authors: Sawikowska
authors: Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479, Poznań, Poland.
authors: Andrzej G
authors: AG
authors: Górny
authors: Department of Genetics, Faculty of Biology and Environmental Protection, University of Silesia, Jagiellońska 28, 40-032, Katowice, Poland.
authors: Kornelia
authors: K
authors: Gudyś
authors: Department of Genetics, Faculty of Biology and Environmental Protection, University of Silesia, Jagiellońska 28, 40-032, Katowice, Poland.
authors: Iwona
authors: I
authors: Szarejko
authors: Department of Genetics, Faculty of Biology and Environmental Protection, University of Silesia, Jagiellońska 28, 40-032, Katowice, Poland.
authors: Justyna
authors: J
authors: Guzy-Wróbelska
authors: Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479, Poznań, Poland. kkry@igr.poznan.pl.
authors: Karolina
authors: K
authors: Krystkowiak
mesh_terms: D000483:Alleles; D002874:Chromosome Mapping; D003433:Crosses, Genetic; D055864:Droughts; D005838:Genotype; D001467:Hordeum / Q000235:genetics* / Q000502:physiology; D018895:Microsatellite Repeats; D010641:Phenotype; D000069600:Plant Breeding; D020641:Polymorphism, Single Nucleotide; D040641:Quantitative Trait Loci; D013312:Stress, Physiological; D014867:Water / Q000502:physiology*
chemical_list: D014867:Water
keywords: Consensus map; Drought; Earliness; SNP annotation; SNP markers; SSR markers; Spring barley