scholarly journals Confirmation of QTL mapping and marker validation for partial seedling resistance to crown rot in wheat line '2-49'

2006 ◽  
Vol 57 (9) ◽  
pp. 967 ◽  
Author(s):  
B. C. Y. Collard ◽  
R. Jolley ◽  
W. D. Bovill ◽  
R. A. Grams ◽  
G. B. Wildermuth ◽  
...  
Keyword(s):  
Ssr Markers ◽  
Doubled Haploid ◽  
Small Sample ◽  
Crown Rot ◽  
Doubled Haploid Population ◽  
Seedling Resistance ◽  
Haploid Population ◽  
Rot Disease ◽  
A Minor ◽  
Partial Crown

We have tested the efficacy of putative microsatellite single sequence repeat (SSR) markers, previously identified in a 2-49 (Gluyas Early/Gala) × Janz doubled haploid wheat (Triticum aestivum) population, as being linked to partial seedling resistance to crown rot disease caused by Fusarium pseudograminearum. The quantitative trait loci (QTLs) delineated by these markers have been tested for linkage to resistance in an independent Gluyas Early × Janz doubled haploid population. The presence of a major QTL on chromosome 1DL (QCr.usq-1D1) and a minor QTL on chromosome 2BS (QCr.usq-2B1) was confirmed. However, a putative minor QTL on chromosome 2A was not confirmed. The QTL on 1D was inherited from Gluyas Early, a direct parent of 2-49, whereas the 2B QTL was inherited from Janz. Three other putative QTLs identified in 2-49 × Janz (on 1AL, 4BL, and 7BS) were inherited by 2-49 from Gala and were not able to be confirmed in this study. The screening of SSR markers on a small sample of elite wheat genotypes indicated that not all of the most tightly linked SSR markers flanking the major QTLs on 1D and 1A were polymorphic in all backgrounds, indicating the need for additional flanking markers when backcrossing into some elite pedigrees. Comparison of SSR haplotypes with those of other genotypes exhibiting partial crown rot resistance suggests that additional, novel sources of crown rot resistance are available.

The genetic architecture of seedling resistance to Septoria tritici blotch in the winter wheat doubled-haploid population Solitär × Mazurka

2011 ◽  
Vol 29 (3) ◽  
pp. 813-830 ◽  
Author(s):  
Christiane Kelm ◽  
S. Mahmod Tabib Ghaffary ◽  
Helge Bruelheide ◽  
Marion S. Röder ◽  
Sebastian Miersch ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Doubled Haploid ◽  
Genetic Architecture ◽  
Septoria Tritici Blotch ◽  
Septoria Tritici ◽  
Doubled Haploid Population ◽  
Seedling Resistance ◽  
Haploid Population

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 QTL controlling agronomic traits in a doubled haploid population of winter oilseed rape (Brassica napus L.)

2018 ◽  
Vol 97 (5) ◽  
pp. 1389-1406 ◽  
Author(s):  
Farshad Fattahi ◽  
Barat Ali Fakheri ◽  
Mahmood Solouki ◽  
Christian Möllers ◽  
Abbas Rezaizad
Keyword(s):  
Brassica Napus ◽  
Oilseed Rape ◽  
Doubled Haploid ◽  
Agronomic Traits ◽  
Doubled Haploid Population ◽  
Winter Oilseed Rape ◽  
Brassica Napus L ◽  
Mapping Qtl ◽  
Haploid Population

scholarly journals Genetic Mapping of Quantitative Trait Loci for Yield-Affecting Traits in a Barley Doubled Haploid Population Derived from Clipper × Sahara 3771

2017 ◽  
Vol 8 ◽  
Author(s):  
Fatemeh Vafadar Shamasbi ◽  
Seyed Hossein Jamali ◽  
Behzad Sadeghzadeh ◽  
Babak Abdollahi Mandoulakani
Keyword(s):  
Quantitative Trait Loci ◽  
Genetic Mapping ◽  
Doubled Haploid ◽  
Quantitative Trait ◽  
Doubled Haploid Population ◽  
Trait Loci ◽  
Haploid Population

scholarly journals The interrelationships of agronomic characters in a doubled haploid population of wheat

2012 ◽  
Vol 41 (Special Issue) ◽  
pp. 233-237
Author(s):  
B. Heidari ◽  
G. Saeidi ◽  
B.E. Sayed Tabatabaei ◽  
K. Suenaga
Keyword(s):  
Doubled Haploid ◽  
Full Text ◽  
Doubled Haploid Population ◽  
Agronomic Characters ◽  
Haploid Population

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scholarly journals Quantifying rooting at depth in a wheat doubled haploid population with introgression from wild emmer

2017 ◽  
Vol 120 (3) ◽  
pp. 457-470 ◽  
Author(s):  
Christina K Clarke ◽  
Peter J Gregory ◽  
Martin Lukac ◽  
Amanda J Burridge ◽  
Alexandra M Allen ◽  
...  
Keyword(s):  
Doubled Haploid ◽  
Wild Emmer ◽  
Doubled Haploid Population ◽  
Haploid Population
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