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wheat QTL

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https://www.readbyqxmd.com/read/30506523/exploring-and-exploiting-the-genetic-variation-of-fusarium-head-blight-resistance-for-genomic-assisted-breeding-in-the-elite-durum-wheat-gene-pool
#1
Barbara Steiner, Sebastian Michel, Marco Maccaferri, Marc Lemmens, Roberto Tuberosa, Hermann Buerstmayr
Genomic selection had a higher selection response for FHB resistance than phenotypic selection, while association mapping identified major QTL on chromosome 3B unaffected by plant height and flowering date. Fusarium head blight (FHB) is one of the most destructive diseases of durum wheat. Hence, minimizing losses in yield, quality and avoiding contamination with mycotoxins are of pivotal importance, as durum wheat is mostly used for human consumption. While growing resistant varieties is the most promising approach for controlling this fungal disease, FHB resistance breeding in durum wheat is hampered by the limited variation in the elite gene pool and difficulties in efficiently combining the numerous small-effect resistance quantitative trait loci (QTL) in the same line...
December 1, 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/30498895/hybrid-durum-wheat-heterosis-of-grain-yield-and-quality-traits-and-genetic-architecture-of-anther-extrusion
#2
Wessam Akel, Matthias Rapp, Patrick Thorwarth, Tobias Würschum, C Friedrich H Longin
Hybrid durum has a promising yield potential coupled with good quality, but the efficiency of hybrid seed production must be improved. Hybrid breeding is a tremendous success story in many crops, but has not yet made a breakthrough in wheat, mainly due to inefficient hybrid seed production. In this study, we investigated the heterosis for grain yield and important quality traits in durum wheat of 33 hybrids built up from 24 parental lines, as well as the variation in anther extrusion and its genetic architecture in a vast collection of Central European elite durum lines...
November 29, 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/30464704/qtl-identification-and-kasp-marker-development-for-productive-tiller-and-fertile-spikelet-numbers-in-two-high-yielding-hard-white-spring-wheat-cultivars
#3
Rui Wang, Yuxiu Liu, Kyle Isham, Weidong Zhao, Justin Wheeler, Natalie Klassen, Yingang Hu, J Michael Bonman, Jianli Chen
Selecting high-yielding wheat cultivars with more productive tillers per unit area (PTN) combined with more fertile spikelets per spike (fSNS) is difficult. QTL mapping of these traits may aid understanding of this bottleneck and accelerate precision breeding for high yield via marker-assisted selection. PTN and fSNS were assessed in four to five trials from 2015 to 2017 in a doubled haploid population derived from two high-yielding cultivars "UI Platinum" and "SY Capstone." Two QTL for PTN ( QPTN...
2018: Molecular Breeding: New Strategies in Plant Improvement
https://www.readbyqxmd.com/read/30459781/pasta-making-quality-qtlome-from-mediterranean-durum-wheat-landraces
#4
Martina Roselló, Conxita Royo, Fanny Álvaro, Dolors Villegas, Ruyman Nazco, Jose Miguel Soriano
In order to identify genome regions related to pasta-making quality traits, association mapping (AM) was performed in a set of 165 durum wheat landraces from 21 Mediterranean countries. The collection was genotyped using 1149 DArT markers and 872 of them with a known genetic position were used for AM. The collection was grown in north-east Spain during 3 years. Results of ANOVA showed that trait variation for quality traits, except for grain protein content (GPC), was mainly explained by genetic effects. Landraces showed higher GPC than modern cultivars but lower gluten strength (GS)...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/30456718/dissecting-the-genetics-underlying-the-relationship-between-protein-content-and-grain-yield-in-a-large-hybrid-wheat-population
#5
Patrick Thorwarth, Guozheng Liu, Erhard Ebmeyer, Johannes Schacht, Ralf Schachschneider, Ebrahim Kazman, Jochen Christoph Reif, Tobias Würschum, Carl Friedrich Horst Longin
Additive and dominance effect QTL for grain yield and protein content display antagonistic pleiotropic effects, making genomic selection based on the index grain protein deviation a promising method to alleviate the negative correlation between these traits in wheat breeding. Grain yield and quality-related traits such as protein content and sedimentation volume are key traits in wheat breeding. In this study, we used a large population of 1604 hybrids and their 135 parental components to investigate the genetics and metabolomics underlying the negative relationship of grain yield and quality, and evaluated approaches for their joint improvement...
November 19, 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/30451634/fusarium-graminearum-chemotype-by-spring-wheat-genotype-interaction-effects-in-type-i-and-ii-resistance-response-assays
#6
Mitra Serajazari, Kerin Hudson, Mina Kaviani, Alireza Navabi
Fusarium Head Blight (FHB), caused by several Fusarium species, is a worldwide problem that severely impacts cereal grain yield and poses major risks to human and animal health due to production of the mycotoxin deoxynivalenol (DON), its acetylated forms, 3-acetyl deoxynivalenol (3-ADON) and 15-acetyl deoxynivalenol (15-ADON). Recent studies suggest an inconsistent effect of F. graminearum chemotypes and resistance of wheat (Triticum aestivum L.) genotypes. To gain insight into the interaction effects of F...
November 19, 2018: Phytopathology
https://www.readbyqxmd.com/read/30446795/genetic-architecture-of-wheat-stripe-rust-resistance-revealed-by-combining-qtl-mapping-using-snp-based-genetic-maps-and-bulked-segregant-analysis
#7
Jingmei Mu, Shuo Huang, Shengjie Liu, Qingdong Zeng, Miaofei Dai, Qilin Wang, Jianhui Wu, Shizhou Yu, Zhensheng Kang, Dejun Han
A major stripe rust resistance QTL was mapped to a 0.4 centimorgan (cM) genetic region on the long arm of chromosome 7B, using combined genome-wide linkage mapping and bulk segregant analysis. The German winter wheat cv. Centrum has displayed high levels of adult plant stripe rust resistance (APR) in field environments for many years. Here, we used the combined genome-wide linkage mapping and pool-extreme genotyping to characterize the APR resistance. One hundred and fifty-one F2:7 recombinant inbred lines derived from a cross between susceptible landrace Mingxian 169 and Centrum were evaluated for stripe rust resistance in multiple environments and genotyped by the wheat 35K single nucleotide polymorphism (SNP) array...
November 16, 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/30426175/identification-of-a-major-qtl-on-chromosome-arm-2al-for-reducing-yellow-rust-severity-from-a-chinese-wheat-landrace-with-evidence-for-durable-resistance
#8
Zhen Wang, Junda Ren, Ziyi Du, Mingzhe Che, Yibin Zhang, Wei Quan, Xu Jiang, Yuan Ma, Yin Zhao, Zhongjun Zhang
A QTL on 2AL for reducing yellow rust severity was identified from a Chinese wheat landrace, being more effective than Yr18, with evidence for durable resistance from field observations. Utilization of wheat resistance is an important strategy to control yellow rust. The Chinese wheat landrace Hong Qimai (HQM) and the advanced breeding line AQ24788-83 (AQ; a progeny of HQM) can significantly reduce disease severity at the adult-plant growth stage. HQM has maintained adult-plant resistance for a prolonged period of time...
November 13, 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/30425721/qtl-mapping-of-six-spike-and-stem-traits-in-hybrid-population-of-agropyron-gaertn-in-multiple-environments
#9
Yonghe Che, Nan Song, Yanping Yang, Xinming Yang, Qingqing Duan, Yan Zhang, Yuqing Lu, Xuqing Li, Jinpeng Zhang, Xiuquan Li, Shenghui Zhou, Lihui Li, Weihua Liu
Most Agropyron Gaertn. species are excellent sources of forage. The derivative lines of wheat- Agropyron cristatum show elite agronomic traits, and some are valuable for wheat breeding. The species of Agropyron Gaertn. was mainly recognized by the spike morphology in traditional taxon. Six traits, including spike length (SL), ear stem length (ESL), the second internodes length (SIL), spikelet number per spike (SNS), floret number per spikelet (FNS), and grain number per spikelet (GNS), are vital to morphology studies and also influences the forage crop yield...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/30425437/mapping-qtls-for-physiological-and-biochemical-traits-related-to-grain-yield-under-control-and-terminal-heat-stress-conditions-in-bread-wheat-triticum-aestivum-l
#10
Faramarz Sohrabi Chah Hassan, Mahmood Solouki, Barat Ali Fakheri, Nafiseh Mahdi Nezhad, Bahram Masoudi
In order to detect genomic regions with different effects for some of the physiological and biochemical traits of wheat, four experiments were conducted at Research Farm of Agricultural and Natural Resources Research Center of Zabol in 2015-2016 and 2016-2017 growing seasons. The experiments were carried out using four alpha lattice designs with two replications under non-stress and terminal heat stress conditions. Plant materials used in this study included 167 recombinant inbred lines and their parents ('SeriM82' and 'Babax')...
November 2018: Physiology and Molecular Biology of Plants: An International Journal of Functional Plant Biology
https://www.readbyqxmd.com/read/30386358/genetic-mapping-of-resistance-in-hexaploid-wheat-for-a-quarantine-disease-karnal-bunt
#11
Gurcharn S Brar, Guillermo Fuentes-Dávila, Xinyao He, Carolina P Sansaloni, Ravi P Singh, Pawan K Singh
Karnal bunt (KB) of wheat, caused by Tilletia indica , is one of the greatest challenges to grain industry, not because of yield loss, but quarantine regulations that restrict international movement and trade of affected stocks. Genetic resistance is the best way to manage this disease. Although several different sources of resistance have been identified to date, very few of those have been subjected to genetic analyses. Understanding the genetics of resistance, characterization and mapping of new resistance loci can help in development of improved germplasm...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/30369469/-current-status-and-perspective-on-research-against-fusarium-head-blight-in-wheat
#12
Ai Min Zhang, Wen Long Yang, Xin Li, Jia Zhu Sun
Wheat is one of the most important food crops in China and worldwide. Wheat production is facing the stresses of different diseases including Fusarium head blight (FHB) which is more and more serious recently and leading to highly concerns. Unremitting efforts have been made on Fusarium head blight resistance breeding and comprehensive control technology development. Rapid progress has been achieved on discovering of resistant genetic resources, mapping of resistant QTL/genes, resistant QTL/genes cloning, gene functional research and molecular breeding...
October 20, 2018: Yi Chuan, Hereditas
https://www.readbyqxmd.com/read/30364249/qtl-detection-for-kernel-size-and-weight-in-bread-wheat-triticum-aestivum-l-using-a-high-density-snp-and-ssr-based-linkage-map
#13
Qiannan Su, Xilan Zhang, Wei Zhang, Na Zhang, Liqiang Song, Lei Liu, Xin Xue, Guotao Liu, Jiajia Liu, Deyuan Meng, Liya Zhi, Jun Ji, Xueqiang Zhao, Chunling Yang, Yiping Tong, Zhiyong Liu, Junming Li
High-density genetic linkage maps are essential for precise mapping quantitative trait loci (QTL) in wheat ( Triticum aestivum L.). In this study, a high-density genetic linkage map consisted of 6312 SNP and SSR markers was developed to identify QTL controlling kernel size and weight, based on a recombinant inbred line (RIL) population derived from the cross of Shixin828 and Kenong2007. Seventy-eight putative QTL for kernel length (KL), kernel width (KW), kernel diameter ratio (KDR), and thousand kernel weight (TKW) were detected over eight environments by inclusive composite interval mapping (ICIM)...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/30327846/detection-and-validation-of-a-novel-major-qtl-for-resistance-to-fusarium-head-blight-from-triticum-aestivum-in-the-terminal-region-of-chromosome-7dl
#14
Junda Ren, Zhen Wang, Ziyi Du, Mingzhe Che, Yibin Zhang, Wei Quan, Yongji Wang, Xu Jiang, Zhongjun Zhang
A novel QTL for FHB resistance was mapped on wheat 7DL, being effective in multiple genetic backgrounds and environments, and comparable to Fhb1 in effect magnitude. Fusarium head blight (FHB) is one of the major fungal diseases affecting wheat production in many countries. The wheat line AQ24788-83 (AQ) possesses FHB resistance. The American wheat cultivar Luke is FHB susceptible. A Luke × AQ population consisting of 1652 advanced recombinant inbred lines (RILs) was developed, from which 272 RILs were randomly sampled and used to construct a linkage map...
October 16, 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/30327845/discovering-new-alleles-for-yellow-spot-resistance-in-the-vavilov-wheat-collection
#15
Eric G Dinglasan, Dharmendra Singh, Manisha Shankar, Olga Afanasenko, Greg Platz, Ian D Godwin, Kai P Voss-Fels, Lee T Hickey
GWAS detected 11 yellow spot resistance QTL in the Vavilov wheat collection. Promising adult-plant resistance loci could provide a sustainable genetic solution to yellow spot in modern wheat varieties. Yellow spot, caused by the fungal pathogen Pyrenophora tritici-repentis (Ptr), is the most economically damaging foliar disease of wheat in Australia. Genetic resistance is considered to be the most sustainable means for disease management, yet the genomic regions underpinning resistance to Ptr, particularly adult-plant resistance (APR), remain vastly unknown...
October 16, 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/30307951/high-density-genetic-mapping-of-fusarium-head-blight-resistance-qtl-in-tetraploid-wheat
#16
Ehsan Sari, Samia Berraies, Ron E Knox, Asheesh K Singh, Yuefeng Ruan, Richard D Cuthbert, Curtis J Pozniak, Maria Antonia Henriquez, Santosh Kumar, Andrew J Burt, Amidou N'Diaye, David J Konkin, Adrian L Cabral, Heather L Campbell, Krystalee Wiebe, Janet Condie, Prabhath Lokuruge, Brad Meyer, George Fedak, Fran R Clarke, John M Clarke, Daryl J Somers, Pierre R Fobert
Breeding for Fusarium head blight (FHB) resistance in durum wheat is complicated by the quantitative trait expression and narrow genetic diversity of available resources. High-density mapping of the FHB resistance quantitative trait loci (QTL), evaluation of their co-localization with plant height and maturity QTL and the interaction among the identified QTL are the objectives of this study. Two doubled haploid (DH) populations, one developed from crosses between Triticum turgidum ssp. durum lines DT707 and DT696 and the other between T...
2018: PloS One
https://www.readbyqxmd.com/read/30267114/dissection-of-two-quantitative-trait-loci-with-pleiotropic-effects-on-plant-height-and-spike-length-linked-in-coupling-phase-on-the-short-arm-of-chromosome-2d-of-common-wheat-triticum-aestivum-l
#17
Lingling Chai, Zhaoyan Chen, Ruolin Bian, Huijie Zhai, Xuejiao Cheng, Huiru Peng, Yingyin Yao, Zhaorong Hu, Mingming Xin, Weilong Guo, Qixin Sun, Aiju Zhao, Zhongfu Ni
Two QTL with pleiotropic effects on plant height and spike length linked in coupling phase on chromosome 2DS were dissected, and diagnostic marker for each QTL was developed. Plant height (PHT) is a crucial trait related to plant architecture and yield potential, and dissection of its underlying genetic basis would help to improve the efficiency of designed breeding in wheat. Here, two quantitative trait loci (QTL) linked in coupling phase on the short arm of chromosome 2D with pleiotropic effects on PHT and spike length, QPht/Sl...
December 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/30261155/genomic-dissection-of-nonhost-resistance-to-wheat-stem-rust-in-brachypodium-distachyon
#18
Rafael Della Coletta, Candice N Hirsch, Matthew N Rouse, Aaron Lorenz, David F Garvin
The emergence of new races of Puccinia graminis f.sp. tritici (Pgt), the causal pathogen of wheat stem rust, has spurred interest in developing durable resistance to this disease in wheat. Nonhost resistance holds promise to help control this and other diseases because it is durable against non-adapted pathogens. However, the genetic and molecular basis of nonhost resistance to wheat stem rust is poorly understood. In this study, the model grass Brachypodium distachyon (Brachypodium), a nonhost of Pgt, was used to genetically dissect nonhost resistance to wheat stem rust...
September 27, 2018: Molecular Plant-microbe Interactions: MPMI
https://www.readbyqxmd.com/read/30255337/identification-of-qtl-regions-for-seedling-root-traits-and-their-effect-on-nitrogen-use-efficiency-in-wheat-triticum-aestivum-l
#19
Xiaoli Fan, Wei Zhang, Na Zhang, Mei Chen, Shusong Zheng, Chunhua Zhao, Jie Han, Jiajia Liu, Xilan Zhang, Liqiang Song, Jun Ji, Xigang Liu, Hongqing Ling, Yiping Tong, Fa Cui, Tao Wang, Junming Li
QTL for a wheat ideotype root system and its plasticity to nitrogen deficiency were characterized. Root system architecture-related traits (RRTs) and their plasticity to nitrogen availability are important for nitrogen acquisition and yield formation in wheat (Triticum aestivum L.). In this study, quantitative trait loci (QTL) analysis was conducted under different nitrogen conditions, using the seedlings of 188 recombinant inbred lines derived from a cross between Kenong 9204 and Jing 411. Fifty-three QTL for seven RRTs and fourteen QTL for the plasticity of these RRTs to nitrogen deficiency were detected...
December 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/30231049/genetic-analysis-of-resistance-to-stripe-rust-in-durum-wheat-triticum-turgidum-l-var-durum
#20
Xue Lin, Amidou N'Diaye, Sean Walkowiak, Kirby T Nilsen, Aron T Cory, Jemanesh Haile, Hadley R Kutcher, Karim Ammar, Alexander Loladze, Julio Huerta-Espino, John M Clarke, Yuefeng Ruan, Ron Knox, Pierre Fobert, Andrew G Sharpe, Curtis J Pozniak
Stripe rust, caused by the fungal pathogen Puccinia striiformis Westend. f. sp. tritici Eriks, is an important disease of bread wheat (Triticum aestivum L.) worldwide and there is an indication that it may also become a serious disease of durum wheat (T. turgidum L. var. durum). Therefore, we investigated the genetic architecture underlying resistance to stripe rust in adapted durum wheat germplasm. Wheat infection assays were conducted under controlled conditions in Canada and under field conditions in Mexico...
2018: PloS One
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