Literature DB >> 26520114

Genetic mapping of common bunt resistance and plant height QTL in wheat.

Arti Singh1,2, Ron E Knox3, R M DePauw4, A K Singh5, R D Cuthbert4, S Kumar4, H L Campbell4.   

Abstract

KEY MESSAGE: Breeding for field resistance to common bunt in wheat will need to account for multiple genes and epistatic and QTL by environment interactions. Loci associated with quantitative resistance to common bunt are co-localized with other beneficial traits including plant height and rust resistance. ABSTRACT: Common bunt, also known as stinking smut, is caused by seed borne fungi Tilletia tritici (Bjerk.) Wint. [syn. Tilletia caries (DC.) Tul.] and Tilletia laevis Kühn [syn. Tilletia foetida (Wallr.) Liro.]. Common bunt is known to cause grain yield and quality losses in wheat due to bunt ball formation and infestation of the grain. The objectives of this research were to identify and map quantitative trait loci (QTL) for common bunt resistance, to study the epistatic interactions between the identified QTL, and investigate the co-localization of bunt resistance with plant height. A population of 261 doubled haploid lines from the cross Carberry/AC Cadillac and checks were genotyped with polymorphic genome wide microsatellite and DArT(®) markers. The lines were grown in 2011, 2012, and 2013 in separate nurseries for common bunt incidence and height evaluation. AC Cadillac contributed a QTL (QCbt.spa-6D) for common bunt resistance on chromosome 6D at markers XwPt-1695, XwPt-672044, and XwPt-5114. Carberry contributed QTL for bunt resistance on chromosomes 1B (QCbt.spa-1B at XwPt743523) 4B (QCbt.spa-4B at XwPt-744434-Xwmc617), 4D (QCbt.spa-4D at XwPt-9747), 5B (QCbt.spa-5B at XtPt-3719) and 7D (QCbt.spa-7D at Xwmc273). Significant epistatic interactions were identified for percent bunt incidence between QCbt.spa-1B × QCbt.spa-4B and QCbt.spa-1B × QCbt.spa-6D, and QTL by environment interaction between QCbt.spa-1B × QCbt.spa-6D. Plant height QTL were found on chromosomes 4B (QPh.spa-4B) and 6D (QPh.spa-6D) that co-located with bunt resistance QTL. The identification of previously unreported common bunt resistance QTL (on chromosomes 4B, 4D and 7D), and new understanding of QTL × QTL interactions will facilitate marker-assisted breeding for common bunt resistance.

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Year:  2015        PMID： 26520114     DOI： 10.1007/s00122-015-2624-8

Source DB:  PubMed          Journal:  Theor Appl Genet        ISSN： 0040-5752            Impact factor:   5.699


  13 in total

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5.  Stripe rust and leaf rust resistance QTL mapping, epistatic interactions, and co-localization with stem rust resistance loci in spring wheat evaluated over three continents.

Authors:  A Singh; R E Knox; R M DePauw; A K Singh; R D Cuthbert; H L Campbell; S Shorter; S Bhavani
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6.  Development of a PCR marker for rapid identification of the Bt-10 gene for common bunt resistance in wheat.

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4.  Mapping of common bunt resistance gene Bt9 in wheat.

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5.  QTL mapping of wheat plant architectural characteristics and their genetic relationship with seven QTLs conferring resistance to sheath blight.

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6.  Identification of Main-Effect and Environmental Interaction QTL and Their Candidate Genes for Drought Tolerance in a Wheat RIL Population Between Two Elite Spring Cultivars.

Authors:  S M Hisam Al Rabbi; Ajay Kumar; Sepehr Mohajeri Naraghi; Suraj Sapkota; Mohammed S Alamri; Elias M Elias; Shahryar Kianian; Raed Seetan; Ali Missaoui; Shyam Solanki; Mohamed Mergoum
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9.  Identification and Validation of a Novel Major Quantitative Trait Locus for Plant Height in Common Wheat (Triticum aestivum L.).

Authors:  Zhiqiang Wang; Haiyan Hu; Xiaojun Jiang; Yang Tao; Yu Lin; Fangkun Wu; Shuai Hou; Shihang Liu; Caixia Li; Guangdeng Chen; Yaxi Liu
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10.  Comparative mapping and validation of multiple disease resistance QTL for simultaneously controlling common and dwarf bunt in bread wheat.

Authors:  Almuth E Muellner; Maria Buerstmayr; Bobur Eshonkulov; David Hole; Sebastian Michel; Julia F Hagenguth; Bernadette Pachler; Ricarda Pernold; Hermann Buerstmayr
Journal:  Theor Appl Genet       Date:  2020-10-29       Impact factor: 5.699
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