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.

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 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.

An Improved Brassica rapa Genetic Linkage Map and Locus-specific Variations in a Doubled Haploid Population

2012 ◽  
Vol 31 (3) ◽  
pp. 558-568 ◽  
Author(s):  
Shuancang Yu ◽  
Fenglan Zhang ◽  
Xiang Zhao ◽  
Yangjun Yu ◽  
Deshuang Zhang ◽  
...  
Keyword(s):  
Linkage Map ◽  
Brassica Rapa ◽  
Doubled Haploid ◽  
Genetic Linkage ◽  
Genetic Linkage Map ◽  
Doubled Haploid Population ◽  
Haploid Population

A genetic linkage map of Brassica carinata constructed with a doubled haploid population

2012 ◽  
Vol 125 (6) ◽  
pp. 1113-1124 ◽  
Author(s):  
Shaomin Guo ◽  
Jun Zou ◽  
Ruiyan Li ◽  
Yan Long ◽  
Sheng Chen ◽  
...  
Keyword(s):  
Linkage Map ◽  
Doubled Haploid ◽  
Genetic Linkage ◽  
Genetic Linkage Map ◽  
Brassica Carinata ◽  
Doubled Haploid Population ◽  
Haploid Population

A genetic linkage map of the soybean cyst nematode Heterodera glycines

2005 ◽  
Vol 273 (3) ◽  
pp. 273-281 ◽  
Author(s):  
N. Atibalentja ◽  
S. Bekal ◽  
L. L. Domier ◽  
T. L. Niblack ◽  
G. R. Noel ◽  
...  
Keyword(s):  
Linkage Map ◽  
Genetic Linkage ◽  
Soybean Cyst Nematode ◽  
Genetic Linkage Map ◽  
Heterodera Glycines ◽  
Cyst Nematode

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.

scholarly journals A Genetic Linkage Map of Nonheading Chinese Cabbage

2007 ◽  
Vol 132 (6) ◽  
pp. 816-823 ◽  
Author(s):  
Jian-Feng Geng ◽  
Cheng-Song Zhu ◽  
Xiao-Wei Zhang ◽  
Yan Cheng ◽  
Yuan-Ming Zhang ◽  
...  
Keyword(s):  
Linkage Map ◽  
Chinese Cabbage ◽  
Doubled Haploid ◽  
Genetic Linkage ◽  
Genetic Linkage Map ◽  
Doubled Haploid Population ◽  
Specific Marker ◽  
Sequence Repeat ◽  
Chi Square ◽  
Mendelian Segregation

Brassica rapa L. ssp. chinensis (L.) Hanelt, known as nonheading chinese cabbage in China, is an important vegetable in eastern Asia and its genetic improvement requires a genetic linkage map. The first genetic linkage map of nonheading chinese cabbage using 112 doubled haploid lines derived from a released F1 hybrid cultivar Shulü between two lines SW-3 and Su-124 was constructed in this paper. One hundred thirty-eight molecular markers were mapped into 14 linkage groups. Among these markers, there were 77 sequence-related amplified polymorphism markers, 27 simple sequence repeat markers, 21 random amplification polymorphic DNA markers, and 13 intersimple sequence repeat markers. Chi-square tests showed that 54 markers are distorted from Mendelian segregation ratios, and the direction of the distortion is mainly toward the maternal parent SW-3. The distortion affects not only the estimation of genetic distance, but also the order of distorted markers on a same linkage group. Given a specific marker order, the authors proposed a multipoint approach to correct the linkage map in an unbiased manner in an F2 population while considering distorted, dominant, and missing markers. A new method was used to correct the linkage map in the doubled haploid population mentioned earlier considering new, distorted, and missing markers. The total length of the corrected linkage map was 1923.75 cM, with an average marker spacing of 15.52 cM. The map will facilitate selective breeding and mapping of quantitative trait loci.

scholarly journals Construction of a genetic linkage map of cigar tobacco (Nicotiana tabacum L.) based on SSR markers and comparative studies

2018 ◽  
Vol 54 (No. 3) ◽  
pp. 115-122 ◽  
Author(s):  
Tong Zhijun ◽  
Xiao Bingguang ◽  
Chen Xuejun ◽  
Fang Dunhuang ◽  
Zhang Yihan ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Nicotiana Tabacum ◽  
Linkage Map ◽  
Ssr Markers ◽  
Genetic Linkage ◽  
Genetic Linkage Map ◽  
Average Distance ◽  
Backcross Population ◽  
Breeding Programs ◽  
Nicotiana Tabacum L

Genetic linkage maps representing the tobacco genome have been an important tool for breeding programs because of the elucidation of polygenic traits. We constructed a genetic linkage map of cigar tobacco (Nicotiana tabacum L.) based on an inter-type backcross population of 213 individuals and performed a comparative analysis with other published maps of dark tobacco and flue-cured tobacco. The map consisted of 562 SSR loci distributed on 24 tentative linkage groups and spanned a total length of 1341.18 cM with an average distance of 2.39 cM between adjacent markers. The comparative analysis revealed a Spearman correlation index of 0.93 for marker order conservation with the previously published maps constructed for different tobacco types. Approximately 91% of the SSR markers common to other inter-type maps were located in the same positions as in previous maps. The three maps exhibit good synteny in terms of the shared markers, which suggests that there might be no translocation variations between the genomes of the cigar, dark and flue-cured tobaccos. These results indicate the feasibility of generating a unique genetic map of preferred traits in cigar tobacco and that such mapping may be helpful for breeding programs because plants derived from different inter-type populations can be rapidly scanned using the markers associated with useful cigar traits

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