scholarly journals Mapping and QTL analysis of the barley population Chebec × Harrington

2003 ◽  
Vol 54 (12) ◽  
pp. 1125 ◽  
Author(s):  
A. R. Barr ◽  
A. Karakousis ◽  
R. C. M. Lance ◽  
S. J. Logue ◽  
S. Manning ◽  
...  
Keyword(s):  
Cyst Nematode ◽  
Cereal Cyst Nematode ◽  
Malting Quality ◽  
Doubled Haploid Population ◽  
Malt Extract ◽  
Malting Barley ◽  
Breeding Programs ◽  
Genomic Location ◽  
Haploid Population ◽  
Barley Population

A doubled haploid population of 120 individuals was produced from the parents Chebec, an Australian 2-row barley of feed quality with resistance to the cereal cyst nematode, and Harrington, a 2-rowed, Canadian variety of premium malting quality. This paper describes 18 field and laboratory experiments conducted with the population and summarises the traits mapped and analysed. The genomic location of 25 traits and genes is described and marker–trait associations for 5 traits (malt extract, diastatic power, resistance to cereal cyst nematode, early flowering, resistance to pre-harvest sprouting) important to Australian efforts to improve malting barley varieties have been used in practical breeding programs. Detailed maps for these populations are shown in this paper, while a consensus map incorporating these maps and further experiments on the populations are described elsewhere in this issue.

Mapping and QTL analysis of the barley population Clipper × Sahara

2003 ◽  
Vol 54 (12) ◽  
pp. 1137 ◽  
Author(s):  
A. Karakousis ◽  
A. R. Barr ◽  
J. M. Kretschmer ◽  
S. Manning ◽  
S. P. Jefferies ◽  
...  
Keyword(s):  
Genetic Linkage ◽  
Genetic Linkage Map ◽  
Nematode Resistance ◽  
Cyst Nematode ◽  
Doubled Haploid Population ◽  
Plant Type ◽  
Boron Tolerance ◽  
Breeding Programs ◽  
Haploid Population ◽  
Barley Population

A genetic linkage map consisting of 211 molecular markers has been generated using a doubled-haploid population derived from a cross between the Australian barley variety Clipper and the Algerian landrace Sahara 3771. The map was used in subsequent trait mapping studies to locate the genes conferring boron tolerance and cereal cyst nematode resistance from Sahara 3371 and to map several plant type and developmental genes. Closely linked markers to the trait loci have been identified and are now being widely implemented in Australian breeding programs.

Mapping and QTL analysis of the barley population Amagi Nijo × WI2585

2003 ◽  
Vol 54 (12) ◽  
pp. 1141 ◽  
Author(s):  
M. A. Pallotta ◽  
S. Asayama ◽  
J. M. Reinheimer ◽  
P. A. Davies ◽  
A. R. Barr ◽  
...  
Keyword(s):  
Doubled Haploid ◽  
Qtl Analysis ◽  
Malting Quality ◽  
Doubled Haploid Population ◽  
Malt Extract ◽  
Diastatic Power ◽  
Haploid Population ◽  
Manganese Efficiency ◽  
Barley Population

A map for the barley doubled haploid population Amagi Nijo × WI2585 was constructed to examine manganese efficiency derived from Amagi Nijo. Manganese efficiency conferred by the previously identified locus Mel1 was validated. No other loci contributing to manganese efficiency were identified, possibly because of poor maker coverage in some regions. The map was additionally used to look for loci contributing to some aspects of malting quality. A locus on 2HL was found to be associated with malt extract, and 2 loci on 4HL and 5H, respectively, were found to be associated with diastatic power.

scholarly journals QTL Mapping Reveals the Relationship between Pasting Properties and Malt Extract in Barley

2018 ◽  
Vol 19 (11) ◽  
pp. 3559 ◽  
Author(s):  
Junmei Wang ◽  
Jianming Yang ◽  
Wei Hua ◽  
Xiaojian Wu ◽  
Jinghuan Zhu ◽  
...  
Keyword(s):  
Pasting Properties ◽  
Malting Quality ◽  
Doubled Haploid Population ◽  
Malt Extract ◽  
Malting Barley ◽  
Breeding Lines ◽  
Close Relationship ◽  
Haploid Population ◽  
The Relationship ◽  
Variance Explained

Pasting properties are important characteristics of barley starch from a processing standpoint. Many studies reported the close relationship between pasting properties and malting quality, especially malt extract. However, most conclusions were derived from the correlation between pasting properties and malting quality using a set of cultivars or breeding lines. In this study, a doubled haploid population of 150 lines from a cross between a Japanese malting barley and a Chinese feed barley was grown in four different environments (two sites × two years). Based on average values from all different environments, 17 significant quantitative trait loci (QTL) were identified for pasting properties. The genetic variance explained by these QTL varied from 7.0 to 23.2%. Most QTL controlling pasting properties were located on 1H, 2H, 5H, and 7H. Results confirmed the linkage between pasting properties and malt extract, with most of the QTL for pasting properties becoming nonsignificant when using malt extract as a covariate. Breakdown showed the closest correlation with malt extract. Molecular markers closely linked to the QTL can be used to select desired pasting properties to improve malting quality.

scholarly journals Breeding Malting Barley under Stress Conditions in South America

2011 ◽  
Vol 40 (No. 4) ◽  
pp. 140-147 ◽  
Author(s):  
E. Germán S
Keyword(s):  
Grain Size ◽  
South America ◽  
Grain Yield ◽  
Leaf Rust ◽  
Production Efficiency ◽  
Malting Quality ◽  
Malt Extract ◽  
Malting Barley ◽  
Net Blotch ◽  
Early Maturity

The annual average area sown with barley (Hordeum vulgare) in South America during 1999–2003 was 795 000 ha. In Argentina, Brazil, Chile and Uruguay, two-rowed spring cultivars are used mostly for malt production. Research has been developed in private malting companies and official institutions supported by the industry. In Argentina, tolerance to drought and heat stress during grain filling are important in drier areas. Yield and malt extract had been improved in cultivars released from 1940 to 1998. In Brazil, progress in grain yield, grain size, malting quality, early maturity, and resistance to net blotch, powdery mildew, and leaf rust has been achieved by EMBRAPA and malting companies. Higher tolerance to soil acidity and resistance to spot blotch are required. Since 1976, malting barley breeding in INIA-Chile has improved grain yield, grain size, beer production efficiency, and resistance to scald, net blotch, stripe rust, and leaf rust. Uruguay produces high quality malt exported mainly to Brazil. Malting companies have released locally bred and introduced cultivars since the early 1970’s. Initiated in 1988, INIA-Uruguay breeding program has improved yield, malting quality, and lodging and disease resistance. Fusarium head blight is a new challenge for research in Brazil and Uruguay. Information regarding malting barley production, the most important stresses in different areas of production, and breeding progress under South American conditions is provided.  

scholarly journals Identification and chromosomal location of major genes for resistance to Pyrenophora teres in a doubled-haploid barley population

Genome ◽  
2006 ◽  
Vol 49 (7) ◽  
pp. 855-859 ◽  
Author(s):  
T L Friesen ◽  
J D Faris ◽  
Z Lai ◽  
B J Steffenson
Keyword(s):  
Doubled Haploid ◽  
Doubled Haploid Population ◽  
Pyrenophora Teres ◽  
Net Blotch ◽  
Seedling Resistance ◽  
Drechslera Teres ◽  
Haploid Population ◽  
Barley Population ◽  
Spot Type ◽  
Simple Sequence

Net blotch, caused by Pyrenophora teres, is one of the most economically important diseases of barley worldwide. Here, we used a barley doubled-haploid population derived from the lines SM89010 and Q21861 to identify major quantitative trait loci (QTLs) associated with seedling resistance to P. teres f. teres (net-type net blotch (NTNB)) and P. teres f. maculata (spot-type net blotch (STNB)). A map consisting of simple sequence repeat (SSR) and amplified fragment length polymorphism (AFLP) markers was used to identify chromosome locations of resistance loci. Major QTLs for NTNB and STNB resistance were located on chromosomes 6H and 4H, respectively. The 6H locus (NTNB) accounted for as much as 89% of the disease variation, whereas the 4H locus (STNB resistance) accounted for 64%. The markers closely linked to the resistance gene loci will be useful for marker-assisted selection.Key words: disease resistance, Drechslera teres, molecular markers.

Mapping and QTL analysis of the barley population Galleon × Haruna Nijo

2003 ◽  
Vol 54 (12) ◽  
pp. 1131 ◽  
Author(s):  
A. Karakousis ◽  
A. R. Barr ◽  
J. M. Kretschmer ◽  
S. Manning ◽  
S. J. Logue ◽  
...  
Keyword(s):  
Molecular Markers ◽  
Doubled Haploid ◽  
Qtl Analysis ◽  
Genetic Linkage ◽  
Genetic Linkage Map ◽  
Mapping Population ◽  
Malting Quality ◽  
Barley Cultivar ◽  
Breeding Programs ◽  
Barley Population

A genetic linkage map consisting of 435 molecular markers has been constructed using a doubled-haploid mapping population derived from a cross between the Australian barley feed variety Galleon and Haruna Nijo, a Japanese barley cultivar of high malting quality. This map was used to locate the genes conferring CCN and SFNB resistance from Galleon and to locate malting and brewing quality genes from Haruna Nijo. Closely linked markers to the trait loci have been identified and are now being widely implemented in Australian breeding programs.

NEAR-INFRARED REFLECTANCE ESTIMATES OF GRAIN PROTEIN AND MALT EXTRACT IN HILL AND ROW PLOT EVALUATIONS OF SPRING MALTING BARLEY

1990 ◽  
Vol 70 (1) ◽  
pp. 71-78 ◽  
Author(s):  
S. TRAGOONRUNG ◽  
P. M. HAYES ◽  
S. L. BROICH
Keyword(s):  
Recurrent Selection ◽  
Near Infrared ◽  
Malting Quality ◽  
Grain Protein ◽  
Malt Extract ◽  
Infrared Reflectance ◽  
Malting Barley ◽  
Near Infrared Reflectance ◽  
Hill Plot ◽  
Calibration Equations

Expensive, time-consuming analyses can limit selection responses for grain protein and malt extract in a malting barley improvement program. Alternative breeding strategies, such as doubled haploid recurrent selection, rapidly produce more genotypes than can be evaluated in conventional plots. Prior to implementing a doubled haploid recurrent selection program for malting quality we sought to test the utility of hill plot evaluation and near-infrared reflectance (NIR) prediction for grain protein and malt extract. Five- and six-wavelength calibration equations were generated for prediction of grain protein and malt extract, respectively. The multiple correlation coefficient of the protein equation (0.96) was higher than that of the malt extract equation (0.88). Calibration equations for both traits based on separate locations and spike classes (two-row vs. six-row) were less robust than the multiple environment, combined equations. The grain protein and malt extract equations had acceptable predictive power for both row and hill plot samples. However, in view of differential trait expression in hill and row plots, NIR prediction based on hill plot evaluation is appropriate for grain protein. NIR prediction of malt extract is best deferred until genotypes are evaluated in row plots.Key words: Malting quality, NIR, hill plots, barley

Cerveza barley

2013 ◽  
Vol 93 (3) ◽  
pp. 557-564 ◽  
Author(s):  
W. G. Legge ◽  
J. R. Tucker ◽  
B. Bizimungu ◽  
T. G. Fetch ◽  
S. Haber ◽  
...  
Keyword(s):  
Disease Resistance ◽  
Hordeum Vulgare ◽  
Agronomic Traits ◽  
Malting Quality ◽  
Western Canada ◽  
Malt Extract ◽  
Malting Barley ◽  
Brewing Industry ◽  
Hordeum Vulgare L ◽  
Made In

Legge, W. G., Tucker, J. R., Bizimungu, B., Fetch Jr., T. G., Haber, S., Menzies, J. G., Noll, J. S., Tekauz, A., Turkington, T. K., Savard, M. E. and Choo, T. M. 2013. Cerveza barley. Can. J. Plant Sci. 93: 557–564. Ceveza is a doubled-haploid hulled two-row spring malting barley (Hordeum vulgare L.) cultivar widely adapted to western Canada, Quebec, and the Maritimes. Developed from the cross TR251/Newdale//TR253/Newdale made in 1998, Cerveza was evaluated in the Western Cooperative Two-row Barley Registration Test (2006–2007) and the Collaborative Malting Barley Trials (2007–2008) conducted by the malting and brewing industry before being registered in 2010. Cerveza was also evaluated in Quebec and the Maritimes in 2007–2009. Cerveza's desirable combination of agronomic traits, disease resistance and malting quality, particularly high grain yield and malt extract, should make it a useful cultivar for producers and the malting and brewing industry.

QTLs and their interaction determining different heading dates of barley in Australia and China

2010 ◽  
Vol 61 (2) ◽  
pp. 145 ◽  
Author(s):  
Xifeng Ren ◽  
Chengdao Li ◽  
W. J. R. Boyd ◽  
Sharon Westcott ◽  
C. R. Grime ◽  
...  
Keyword(s):  
Phenotypic Variation ◽  
Chromosomal Location ◽  
Heading Date ◽  
Doubled Haploid Population ◽  
Seasonal Adaptation ◽  
Breeding Programs ◽  
Haploid Population ◽  
Barley Germplasm ◽  
Late Genotype ◽  
Late Sowing

Heading date is a major determinant of the regional and seasonal adaptation of barley varieties. The dogma is that introduced germplasm is more likely to be adapted if it is derived from a similar latitude. However, barley germplasm introduced from similar latitudes of South-East Asia is extremely early heading in the Australian environments and vice versa. A doubled-haploid population from a cross of an Australian barley Galleon and a Japanese barley Haruna Nijo was evaluated for heading date in Australia (Perth, 31°56′S) and China (Wuhan, 30°33′N) under normal autumn sowing, late sowing in the field, and extended-light glasshouse conditions. One major QTL was identified on chromosome 5H under the three conditions in China. The single QTL accounted for up to 50% of phenotypic variation for heading date. The Australian variety contributed to late heading date. Two QTLs on chromosomes 4H and 5H were detected for controlling heading date in Australia. The QTL/QTL interaction contributed up to 35.8% of phenotypic variation for heading date in Australia, which is the major reason for the extremely early heading date of the Japanese variety in the Australian environment. The chromosome 5H QTL was detected at the same chromosomal location when the population was grown in either China or Australia. In both environments the Australian variety contributed to the late heading date. Selection against the Japanese alleles of chromosomes 4H and 5H QTLs could eliminate the extremely early genotype in Australia and selection against the Australian allele of chromosome 5H QTL could eliminate the extremely late genotype in China when Australian and Japanese germplasms are used in the breeding programs.

Chromosomal location of the cadmium uptake gene (Cdu1) in durum wheat

Genome ◽  
2009 ◽  
Vol 52 (9) ◽  
pp. 741-747 ◽  
Author(s):  
R. E. Knox ◽  
C. J. Pozniak ◽  
F. R. Clarke ◽  
J. M. Clarke ◽  
S. Houshmand ◽  
...  
Keyword(s):  
Triticum Turgidum ◽  
Safety Concern ◽  
Dominant Gene ◽  
Doubled Haploid Population ◽  
Cd Uptake ◽  
Laboratory Methods ◽  
Breeding Programs ◽  
Chromosome 5B ◽  
Haploid Population ◽  
Trait Locus

Levels of the heavy metal cadmium (Cd) in food products are a food safety concern. Grain Cd is higher in durum (Triticum turgidum L. var. durum) than in common wheat, so reduction of Cd in durum grain is a priority of breeding programs. Previous research demonstrated that a single dominant gene, Cdu1, confers the low grain Cd phenotype, but the map location of the gene is not known. A doubled haploid population segregating for Cd concentration, developed from the cross of W9262-260D3 (a Kyle*2/Biodur inbred selection with low Cd uptake) and Kofa (high Cd uptake) and mapped with microsatellite markers, was used to locate Cdu1. Grain Cd concentration was determined by standard laboratory methods on field grain samples in 2000 and 2001. The Cd concentration segregated bimodally, allowing Cdu1 to be mapped qualitatively as well as quantitatively with quantitative trait locus analysis. The Cdu1 gene mapped to the long arm of chromosome 5B.

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