The influence of particular chromosome regions of Triticum timopheevii on the formation of resistance to diseases and quantitative traits in common wheat

Timonova, E. M.; Леонова, И. Н.; Белан, И. А.; Россеева, Л. П.; Салина, Е. А.

doi:10.1134/s2079059712040119

Cited by 13 publications

(15 citation statements)

References 42 publications

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“…The susceptibility of some T. timopheevii plants proves the appearance of clones interacting with them in a race-specific manner. Previously, overcoming of leaf rust resistance of introgressive wheat lines with single T. timopheevii genes was also shown in Western Siberia [19].…”

Section: Discussionmentioning

confidence: 95%

Prospects of Using of Genetic Potential of Triticum timopheevii for Durable Defense of Common Wheat from Leaf Rust

Plotnikova¹,

Pozherukova²,

Novikova³

et al. 2020

Proceedings of the International Scientific Conference the Fifth Technological Order: Prospects for the Development and Moderni

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Common wheat is the main grain crop in Russia. In the last decade, the development of leaf rust caused by the pathogenic fungus Puccinia triticina Erikss on the wheat was enhanced. To increase grain production and obtain environmentally friendly products, it is necessary to use varieties resistant to disease. Common wheat is cultivated over large areas in Western Siberia. In this region an aggressive Asian population of P. triticina, differed from the European one, exists on the crops. For durable defense of varieties from rust diseases, it is necessary to enrich the wheat genome with new resistance genes from the related cereals. The rare species Triticum timopheevii Zhuk. is considered a promising issue of resistance to fungal diseases, but its immunity has been confirmed mainly in the European part of Russia and in North America. The aim of the work was to monitor the resistance of T. timopheevii to leaf rust in Western Siberia and to determine the promising accessions for breeding programs. The adult resistance of T. timopheevii accessions was evaluated in the field conditions on intensive infectious background in 2011-2018 in the South of Western Siberia (Omsk). Additionally the reactions of seedlings to infection were estimated in laboratory. Damage of the plants by leaf rust was characterized by type, score/ percentage. The tendency to shift the type of seedling reaction from immune to susceptible was shown. Beside it the regular weak damage of adult plants of some T. timopheevii specimens was noted in the field in 2014-2018. Among a set of T. timopheevii accessions the promising specimens were determined with stable resistance to the Asian population of P. triticina, which are suitable for breeding programs. The work has begun to include the resistant accessions in the breeding process.

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Section: Discussionmentioning

confidence: 95%

Prospects of Using of Genetic Potential of Triticum timopheevii for Durable Defense of Common Wheat from Leaf Rust

Plotnikova¹,

Pozherukova²,

Novikova³

et al. 2020

Proceedings of the International Scientific Conference the Fifth Technological Order: Prospects for the Development and Moderni

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“…By chemical mutagenesis new forms are obtained qualitatively, such as, dwarf mutants in wheat and barley, ultra-fast mutants in wheat and barley resistant to fungal diseases of plants form, high-lysine and highly productive mutants [3]. These facts indicate that mutants obtained by using chemical mutagens can successfully serve as progenitors of new high-yielding varieties.…”

Section: Introductionmentioning

confidence: 87%

“…Contradictory results are explained as genetic features of parent forms and originality of specific ecological zones [3,4].…”

Section: Results and Their Discussionmentioning

confidence: 99%

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Some results of the breeding and genetic studies of common wheat in the south-east of Kazakhstan

et al. 2014

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Abstract.Increase productivity and quality of wheat by improving its genotype -one of the main problems of agriculture. Currently, using conventional methods of breeding and genetic research, such as mutagenesis, backcrossing selection and distant hybridization can increase the effectiveness of producing genetically improved crop forms. The fertility rate of soft wheat hybrids of wild species with T. timopheevi depends on the direction of crosses and genotype of varieties. Wild species as the parent component favorably affect a high percentage of tying grains [1,2].

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“…T. timopheevii has been shown to be a valuable source of new disease resistance genes including leaf rust resistance [5, 31, 57, 59], stem rust resistance [1, 26, 47, 48, 63], powdery mildew resistance [21, 24, 49] and Fusarium head blast resistance [4, 6, 13]. In addition to the resistance genes, T. timopheevii has been shown to contain genetic variation for salt tolerance [67] and protein content [43, 69].…”

Section: Introductionmentioning

confidence: 99%

Development and characterisation of interspecific hybrid lines with genome-wide introgressions from Triticum timopheevii in a hexaploid wheat background

et al. 2019

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Background Triticum timopheevii (2n = 4x = 28; A t A t GG), is an important source for new genetic variation for wheat improvement with genes for potential disease resistance and salt tolerance. By generating a range of interspecific hybrid lines, T. timopheevii can contribute to wheat’s narrow gene-pool and be practically utilised in wheat breeding programmes. Previous studies that have generated such introgression lines between wheat and its wild relatives have been unable to use high-throughput methods to detect the presence of wild relative segments in such lines. Results A whole genome introgression approach, exploiting homoeologous recombination in the absence of the Ph1 locus, has resulted in the transfer of different chromosome segments from both the A t and G genomes of T. timopheevii into wheat. These introgressions have been detected and characterised using single nucleotide polymorphism (SNP) markers present on a high-throughput Axiom® Genotyping Array. The analysis of these interspecific hybrid lines has resulted in the detection of 276 putative unique introgressions from T. timopheevii , thereby allowing the generation of a genetic map of T. timopheevii containing 1582 SNP markers, spread across 14 linkage groups representing each of the seven chromosomes of the A t and G genomes of T. timopheevii . The genotyping of the hybrid lines was validated through fluorescence in situ hybridisation (FISH). Comparative analysis of the genetic map of T. timopheevii and the physical map of the hexaploid wheat genome showed that synteny between the two species is highly conserved at the macro-level and confirmed the presence of inter- and intra-genomic translocations within the A t and G genomes of T. timopheevii that have been previously only detected through cytological techniques. Conclusions In this work, we report a set of SNP markers present on a high-throughput genotyping array, able to detect the presence of T. timopheevii in a hexaploid wheat background making it a potentially valuable tool for marker assisted selection (MAS) in wheat pre-breeding programs. These valuable resources of high-density molecular markers and wheat- T. timopheevii hybrid lines will greatly enhance the work being undertaken for wheat improvement through wild relative introgressions. Electronic supplementary material The online version of this article (10.1186/s12870-019-1785-z) contains supplementary material, which is available to authorized users.

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The influence of particular chromosome regions of Triticum timopheevii on the formation of resistance to diseases and quantitative traits in common wheat

Cited by 13 publications

References 42 publications

Prospects of Using of Genetic Potential of Triticum timopheevii for Durable Defense of Common Wheat from Leaf Rust

Prospects of Using of Genetic Potential of Triticum timopheevii for Durable Defense of Common Wheat from Leaf Rust

Some results of the breeding and genetic studies of common wheat in the south-east of Kazakhstan

Development and characterisation of interspecific hybrid lines with genome-wide introgressions from Triticum timopheevii in a hexaploid wheat background

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