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TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik

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https://www.readbyqxmd.com/read/27913833/tight-repulsion-linkage-between-sr36-and-sr39-was-revealed-by-genetic-cytogenetic-and-molecular-analyses
#1
Bosco Chemayek, Urmil K Bansal, Naeela Qureshi, Peng Zhang, William W Wagoire, Harbans S Bariana
The shortening of Aegilops speltoides segment did not facilitate recombination between stem rust resistance genes Sr36 and Sr39 . Robustness of marker rwgs28 for marker-assisted selection of Sr39 was demonstrated. Stem rust resistance genes Sr39 and Sr36 were transferred from Aegilops speltoides and Triticum timopheevii, respectively, to chromosome 2B of wheat. Genetic stocks RL6082 and RWG1 carrying Sr39 on a large and a shortened Ae. speltoides segments, respectively, and the Sr36-carrying Australian wheat cultivar Cook were used in this study...
December 2, 2016: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/27913832/general-and-specific-combining-abilities-in-a-maize-zea-mays-l-test-cross-hybrid-panel-relative-importance-of-population-structure-and-genetic-divergence-between-parents
#2
A Larièpe, L Moreau, J Laborde, C Bauland, S Mezmouk, L Décousset, T Mary-Huard, J B Fiévet, A Gallais, P Dubreuil, A Charcosset
General and specific combining abilities of maize hybrids between 288 inbred lines and three tester lines were highly related to population structure and genetic distance inferred from SNP data. Many studies have attempted to provide reliable and quick methods to identify promising parental lines and combinations in hybrid breeding programs. Since the 1950s, maize germplasm has been organized into heterotic groups to facilitate the exploitation of heterosis. Molecular markers have proven efficient tools to address the organization of genetic diversity and the relationship between lines or populations...
December 2, 2016: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/27900400/homoeologous-recombination-based-transfer-and-molecular-cytogenetic-mapping-of-a-wheat-streak-mosaic-virus-and-triticum-mosaic-virus-resistance-gene-wsm3-from-thinopyrum-intermedium-to-wheat
#3
Tatiana V Danilova, Guorong Zhang, Wenxuan Liu, Bernd Friebe, Bikram S Gill
Here, we report the production of a wheat- Thinopyrum intermedium recombinant stock conferring resistance to wheat streak mosaic virus and Triticum mosaic virus. Wheat streak mosaic caused by the wheat streak mosaic virus (WSMV) is an important disease of bread wheat (Triticum aestivum) worldwide. To date, only three genes conferring resistance to WSMV have been named and two, Wsm1 and Wsm3, were derived from the distantly related wild relative Thinopyrum intermedium. Wsm3 is only available in the form of a compensating wheat-Th...
November 29, 2016: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/27900399/quantitative-trait-loci-mapping-of-heat-tolerance-in-broccoli-brassica-oleracea-var-italica-using-genotyping-by-sequencing
#4
Sandra E Branham, Zachary J Stansell, David M Couillard, Mark W Farnham
Five quantitative trait loci and one epistatic interaction were associated with heat tolerance in a doubled haploid population of broccoli evaluated in three summer field trials. Predicted rising global temperatures due to climate change have generated a demand for crops that are resistant to yield and quality losses from heat stress. Broccoli (Brassica oleracea var. italica) is a cool weather crop with high temperatures during production decreasing both head quality and yield. Breeding for heat tolerance in broccoli has potential to both expand viable production areas and extend the growing season but breeding efficiency is constrained by limited genetic information...
November 29, 2016: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/27896367/erratum-to-fine-mapping-and-candidate-gene-analysis-of-qhd5-a-novel-major-qtl-with-pleiotropism-for-yield-related-traits-in-rice-oryza-sativa-l
#5
Bin Sun, Xiao-Deng Zhan, Ze-Chuan Lin, Wei-Xun Wu, Ping Yu, Ying-Xin Zhang, Lian-Ping Sun, Li-Yong Cao, Shi-Hua Cheng
No abstract text is available yet for this article.
November 29, 2016: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/27896366/allelism-analysis-of-brrfp-locus-in-different-restorer-lines-and-map-based-cloning-of-a-fertility-restorer-gene-brrfp1-for-pol-cms-in-chinese-cabbage-brassica-rapa-l
#6
Huamin Zhang, Junqing Wu, Zihui Dai, Meiling Qin, Lingyu Hao, Yanjing Ren, Qingfei Li, Lugang Zhang
In Chinese cabbage, there are two Rf loci for pol CMS and one of them was mapped to a 12.6-kb region containing a potential candidate gene encoding PPR protein. In Chinese cabbage (Brassica rapa), polima cytoplasmic male sterility (pol CMS) is an important CMS type and is widely used for hybrid breeding. By extensive test crossing in Chinese cabbage, four restorer lines (92s105, 01s325, 00s109, and 88s148) for pol CMS were screened. By analyzing the allelism of the four restorer lines, it was found that 92s105, 01s325, and 00s109 had the same "restorers of fertility" (Rf) locus (designated as BrRfp1), but 88s148 had a different Rf locus (designated as BrRfp2)...
November 28, 2016: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/27872942/graphical-genotyping-as-a-method-to-map-ny-o-n-sto-and-gpa5-using-a-reference-panel-of-tetraploid-potato-cultivars
#7
Herman J van Eck, Peter G Vos, Jari P T Valkonen, Jan G A M L Uitdewilligen, Hellen Lensing, Nick de Vetten, Richard G F Visser
The method of graphical genotyping is applied to a panel of tetraploid potato cultivars to visualize haplotype sharing. The method allowed to map genes involved in virus and nematode resistance. The physical coordinates of the amount of linkage drag surrounding these genes are easily interpretable. Graphical genotyping is a visually attractive and easily interpretable method to represent genetic marker data. In this paper, the method is extended from diploids to a panel of tetraploid potato cultivars. Application of filters to select a subset of SNPs allows one to visualize haplotype sharing between individuals that also share a specific locus...
November 21, 2016: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/27866228/fine-mapping-of-the-chromosome-5b-region-carrying-closely-linked-rust-resistance-genes-yr47-and-lr52-in-wheat
#8
Naeela Qureshi, Harbans Bariana, Kerrie Forrest, Matthew Hayden, Beat Keller, Thomas Wicker, Justin Faris, Elena Salina, Urmil Bansal
Fine mapping of Yr47 and Lr52 in chromosome arm 5BS of wheat identified close linkage of the marker sun180 to both genes and its robustness for marker-assisted selection was demonstrated. The widely effective and genetically linked rust resistance genes Yr47 and Lr52 have previously been mapped in the short arm of chromosome 5B in two F3 populations (Aus28183/Aus27229 and Aus28187/Aus27229). The Aus28183/Aus27229 F3 population was advanced to generate an F6 recombinant inbred line (RIL) population to identify markers closely linked with Yr47 and Lr52...
November 19, 2016: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/27866227/genome-wide-association-mapping-of-resistance-to-eyespot-disease-pseudocercosporella-herpotrichoides-in-european-winter-wheat-triticum-aestivum-l-and-fine-mapping-of-pch1
#9
Christine D Zanke, Bernd Rodemann, Jie Ling, Quddoos H Muqaddasi, Jörg Plieske, Andreas Polley, Sonja Kollers, Erhard Ebmeyer, Viktor Korzun, Odile Argillier, Gunther Stiewe, Thomas Zschäckel, Martin W Ganal, Marion S Röder
Genotypes with recombination events in the Triticum ventricosum introgression on chromosome 7D allowed to fine-map resistance gene Pch1, the main source of eyespot resistance in European winter wheat cultivars. Eyespot (also called Strawbreaker) is a common and serious fungal disease of winter wheat caused by the necrotrophic fungi Oculimacula yallundae and Oculimacula acuformis (former name Pseudocercosporella herpotrichoides). A genome-wide association study (GWAS) for eyespot was performed with 732 microsatellite markers (SSR) and 7761 mapped SNP markers derived from the 90 K iSELECT wheat array using a panel of 168 European winter wheat varieties as well as three spring wheat varieties and phenotypic evaluation of eyespot in field tests in three environments...
November 19, 2016: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/27866226/high-accuracy-of-predicting-hybrid-performance-of-fusarium-head-blight-resistance-by-mid-parent-values-in-wheat
#10
Thomas Miedaner, Albert W Schulthess, Manje Gowda, Jochen C Reif, C Friedrich H Longin
Mid-parent values of Fusarium head blight (FHB) resistance tested across several locations are a good predictor of hybrid performance caused by a preponderance of additive gene action in wheat. Hybrid breeding is intensively discussed as one solution to boost yield and yield stability including an enhanced biotic stress resistance. Our objectives were to investigate (1) the heterosis for Fusarium head blight (FHB) resistance, (2) the importance of general (GCA) vs. specific combining ability (SCA) for FHB resistance, and (3) the possibility to predict the FHB resistance of the hybrids by the parental means...
November 19, 2016: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/27866225/characterization-of-a-common-wheat-triticum-aestivum-l-high-tillering-dwarf-mutant
#11
Tao Xu, Nengfei Bian, Mingxing Wen, Jin Xiao, Chunxia Yuan, Aizhong Cao, Shouzhong Zhang, Xiue Wang, Haiyan Wang
A novel high-tillering dwarf mutant in common wheat Wangshuibai was characterized and mapped to facilitate breeding for plant height and tiller and the future cloning of the causal gene. Tiller number and plant height are two major agronomic traits in cereal crops affecting plant architecture and grain yield. NAUH167, a mutant of common wheat landrace Wangshuibai induced by ethylmethyl sulfide (EMS) treatment, exhibits higher tiller number and reduced plant height. Microscope observation showed that the dwarf phenotype was attributed to the decrease in the number of cells and their length...
November 19, 2016: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/27864597/genome-wide-association-mapping-and-agronomic-impact-of-cowpea-root-architecture
#12
James D Burridge, Hannah M Schneider, Bao-Lam Huynh, Philip A Roberts, Alexander Bucksch, Jonathan P Lynch
Genetic analysis of data produced by novel root phenotyping tools was used to establish relationships between cowpea root traits and performance indicators as well between root traits and Striga tolerance. Selection and breeding for better root phenotypes can improve acquisition of soil resources and hence crop production in marginal environments. We hypothesized that biologically relevant variation is measurable in cowpea root architecture. This study implemented manual phenotyping (shovelomics) and automated image phenotyping (DIRT) on a 189-entry diversity panel of cowpea to reveal biologically important variation and genome regions affecting root architecture phenes...
November 18, 2016: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/27858103/validating-the-prediction-accuracies-of-marker-assisted-and-genomic-selection-of-fusarium-head-blight-resistance-in-wheat-using-an-independent-sample
#13
Yong Jiang, Albert Wilhelm Schulthess, Bernd Rodemann, Jie Ling, Jörg Plieske, Sonja Kollers, Erhard Ebmeyer, Viktor Korzun, Odile Argillier, Gunther Stiewe, Martin W Ganal, Marion S Röder, Jochen C Reif
Compared with independent validation, cross-validation simultaneously sampling genotypes and environments provided similar estimates of accuracy for genomic selection, but inflated estimates for marker-assisted selection. Estimates of prediction accuracy of marker-assisted (MAS) and genomic selection (GS) require validations. The main goal of our study was to compare the prediction accuracies of MAS and GS validated in an independent sample with results obtained from fivefold cross-validation using genomic and phenotypic data for Fusarium head blight resistance in wheat...
November 17, 2016: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/27844116/genome-wide-association-study-reveals-genetic-architecture-of-coleoptile-length-in-wheat
#14
Genqiao Li, Guihua Bai, Brett F Carver, Norman C Elliott, Rebecca S Bennett, Yanqi Wu, Robert Hunger, J Michael Bonman, Xiangyang Xu
Eight QTL for coleoptile length were identified in a genome-wide association study on a set of 893 wheat accessions, four of which are novel loci. Wheat cultivars with long coleoptiles are preferred in wheat-growing regions where deep planting is practiced. However, the wide use of gibberellic acid (GA)-insensitive dwarfing genes, Rht-B1b and Rht-D1b, makes it challenging to breed dwarf wheat cultivars with long coleoptiles. To understand the genetic basis of coleoptile length, we performed a genome-wide association study on a set of 893 landraces and historical cultivars using 5011 single nucleotide polymorphism (SNP) markers...
November 14, 2016: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/27844115/from-phenotype-to-genotype-celebrating-150%C3%A2-years-of-mendelian-genetics-in-plant-breeding-research
#15
EDITORIAL
Johann Vollmann, Hermann Buerstmayr
No abstract text is available yet for this article.
November 14, 2016: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/27844114/genetic-and-biochemical-analysis-reveals-linked-qtls-determining-natural-variation-for-fruit-post-harvest-water-loss-in-pepper-capsicum
#16
Sigal Popovsky-Sarid, Yelena Borovsky, Adi Faigenboim, Eugene P Parsons, Gregory T Lohrey, Sharon Alkalai-Tuvia, Elazar Fallik, Matthew A Jenks, Ilan Paran
Molecular markers linked to QTLs controlling post-harvest fruit water loss in pepper may be utilized to accelerate breeding for improved shelf life and inhibit over-ripening before harvest. Bell pepper (Capsicum annuum L.) is an important vegetable crop world-wide. However, marketing is limited by the relatively short shelf life of the fruit due to water loss and decay that occur during prolonged storage. Towards breeding pepper with reduced fruit post-harvest water loss (PWL), we studied the genetic, physiological and biochemical basis for natural variation of PWL...
November 14, 2016: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/27832313/mapping-and-identification-of-a-potential-candidate-gene-for-a-novel-maturity-locus-e10-in-soybean
#17
Bahram Samanfar, Stephen J Molnar, Martin Charette, Andrew Schoenrock, Frank Dehne, Ashkan Golshani, François Belzile, Elroy R Cober
E10 is a new maturity locus in soybean and FT4 is the predicted/potential functional gene underlying the locus. Flowering and maturity time traits play crucial roles in economic soybean production. Early maturity is critical for north and west expansion of soybean in Canada. To date, 11 genes/loci have been identified which control time to flowering and maturity; however, the molecular bases of almost half of them are not yet clear. We have identified a new maturity locus called "E10" located at the end of chromosome Gm08...
November 10, 2016: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/27830284/sequence-diversification-in-recessive-alleles-of-two-host-factor-genes-suggests-adaptive-selection-for-bymovirus-resistance-in-cultivated-barley-from-east-asia
#18
Ping Yang, Antje Habekuß, Bernhard J Hofinger, Kostya Kanyuka, Benjamin Kilian, Andreas Graner, Frank Ordon, Nils Stein
Two distinct patterns of sequence diversity for the recessive alleles of two host factors HvPDIL5 - 1 and HvEIF4E indicated the adaptive selection for bymovirus resistance in cultivated barley from East Asia. Plant pathogens are constantly challenging plant fitness and driving resistance gene evolution in host species. Little is known about the evolution of sequence diversity in host recessive resistance genes that interact with plant viruses. Here, by combining previously published and newly generated targeted re-sequencing information, we systematically analyzed natural variation in a broad collection of wild (Hordeum spontaneum; Hs) and domesticated barleys (Hordeum vulgare; Hv) using the full-length coding sequence of the two host factor genes, HvPDIL5-1 and HvEIF4E, conferring recessive resistance to the agriculturally important Barley yellow mosaic virus (BaYMV) and Barley mild mosaic virus (BaMMV)...
November 9, 2016: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/27826661/genomic-assisted-selection-for-enhancing-line-breeding-merging-genomic-and-phenotypic-selection-in-winter-wheat-breeding-programs-with-preliminary-yield-trials
#19
Sebastian Michel, Christian Ametz, Huseyin Gungor, Batuhan Akgöl, Doru Epure, Heinrich Grausgruber, Franziska Löschenberger, Hermann Buerstmayr
Early generation genomic selection is superior to conventional phenotypic selection in line breeding and can be strongly improved by including additional information from preliminary yield trials. The selection of lines that enter resource-demanding multi-environment trials is a crucial decision in every line breeding program as a large amount of resources are allocated for thoroughly testing these potential varietal candidates. We compared conventional phenotypic selection with various genomic selection approaches across multiple years as well as the merit of integrating phenotypic information from preliminary yield trials into the genomic selection framework...
November 8, 2016: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/27807611/association-mapping-of-leaf-rust-resistance-loci-in-a-spring-wheat-core-collection
#20
M Kathryn Turner, James A Kolmer, Michael O Pumphrey, Peter Bulli, Shiaoman Chao, James A Anderson
We identified 15 potentially novel loci in addition to previously characterized leaf rust resistance genes from 1032 spring wheat accessions. Targeted AM subset panels were instrumental in revealing interesting loci. Leaf rust is a common disease of wheat, consistently reducing yields in many wheat-growing regions of the world. Although fungicides are commonly applied to wheat in the United States (US), genetic resistance can provide less expensive, yet effective control of the disease. Our objectives were to map leaf rust resistance genes in a large core collection of spring wheat accessions selected from the United States Department of Agriculture-Agricultural Research Service National Small Grains Collection (NSGC), determine whether previously characterized race-nonspecific resistance genes could be identified with our panel, and evaluate the use of targeted panels to identify seedling and adult plant resistance (APR) genes...
November 2, 2016: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
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