Genetic diversity, population structure and marker-trait associations for agronomic and grain traits in wild diploid wheat Triticum urartu
Abstract Background Wild diploid wheat, Triticum urartu (T. urartu) is the progenitor of bread wheat, and understanding its genetic diversity and genome function will provide considerable reference for dissecting genomic information of common wheat. Results In this study, we investigated the morphol...
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BMC
2017-07-01
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| Series: | BMC Plant Biology |
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| Online Access: | http://link.springer.com/article/10.1186/s12870-017-1058-7 |
| _version_ | 1819291156798767104 |
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| author | Xin Wang Guangbin Luo Wenlong Yang Yiwen Li Jiazhu Sun Kehui Zhan Dongcheng Liu Aimin Zhang |
| author_facet | Xin Wang Guangbin Luo Wenlong Yang Yiwen Li Jiazhu Sun Kehui Zhan Dongcheng Liu Aimin Zhang |
| author_sort | Xin Wang |
| collection | DOAJ |
| description | Abstract Background Wild diploid wheat, Triticum urartu (T. urartu) is the progenitor of bread wheat, and understanding its genetic diversity and genome function will provide considerable reference for dissecting genomic information of common wheat. Results In this study, we investigated the morphological and genetic diversity and population structure of 238 T. urartu accessions collected from different geographic regions. This collection had 19.37 alleles per SSR locus and its polymorphic information content (PIC) value was 0.76, and the PIC and Nei’s gene diversity (GD) of high-molecular-weight glutenin subunits (HMW-GSs) were 0.86 and 0.88, respectively. UPGMA clustering analysis indicated that the 238 T. urartu accessions could be classified into two subpopulations, of which Cluster I contained accessions from Eastern Mediterranean coast and those from Mesopotamia and Transcaucasia belonged to Cluster II. The wide range of genetic diversity along with the manageable number of accessions makes it one of the best collections for mining valuable genes based on marker-trait association. Significant associations were observed between simple sequence repeats (SSR) or HMW-GSs and six morphological traits: heading date (HD), plant height (PH), spike length (SPL), spikelet number per spike (SPLN), tiller angle (TA) and grain length (GL). Conclusions Our data demonstrated that SSRs and HMW-GSs were useful markers for identification of beneficial genes controlling important traits in T. urartu, and subsequently for their conservation and future utilization, which may be useful for genetic improvement of the cultivated hexaploid wheat. |
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| institution | Directory Open Access Journal |
| issn | 1471-2229 |
| language | English |
| last_indexed | 2024-12-24T03:34:10Z |
| publishDate | 2017-07-01 |
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| series | BMC Plant Biology |
| spelling | doaj.art-0738e290d9c6453babc7bdbc435bccc42022-12-21T17:17:06ZengBMCBMC Plant Biology1471-22292017-07-0117111710.1186/s12870-017-1058-7Genetic diversity, population structure and marker-trait associations for agronomic and grain traits in wild diploid wheat Triticum urartuXin Wang0Guangbin Luo1Wenlong Yang2Yiwen Li3Jiazhu Sun4Kehui Zhan5Dongcheng Liu6Aimin Zhang7State Key Laboratory of Plant Cell and Chromosome Engineering, National Center for Plant Gene Research, Institute of Genetics and Developmental Biology, Chinese Academy of SciencesState Key Laboratory of Plant Cell and Chromosome Engineering, National Center for Plant Gene Research, Institute of Genetics and Developmental Biology, Chinese Academy of SciencesState Key Laboratory of Plant Cell and Chromosome Engineering, National Center for Plant Gene Research, Institute of Genetics and Developmental Biology, Chinese Academy of SciencesState Key Laboratory of Plant Cell and Chromosome Engineering, National Center for Plant Gene Research, Institute of Genetics and Developmental Biology, Chinese Academy of SciencesState Key Laboratory of Plant Cell and Chromosome Engineering, National Center for Plant Gene Research, Institute of Genetics and Developmental Biology, Chinese Academy of SciencesCollege of Agronomy/The Collaborative Innovation Center of Grain Crops in Henan, Henan Agricultural UniversityState Key Laboratory of Plant Cell and Chromosome Engineering, National Center for Plant Gene Research, Institute of Genetics and Developmental Biology, Chinese Academy of SciencesState Key Laboratory of Plant Cell and Chromosome Engineering, National Center for Plant Gene Research, Institute of Genetics and Developmental Biology, Chinese Academy of SciencesAbstract Background Wild diploid wheat, Triticum urartu (T. urartu) is the progenitor of bread wheat, and understanding its genetic diversity and genome function will provide considerable reference for dissecting genomic information of common wheat. Results In this study, we investigated the morphological and genetic diversity and population structure of 238 T. urartu accessions collected from different geographic regions. This collection had 19.37 alleles per SSR locus and its polymorphic information content (PIC) value was 0.76, and the PIC and Nei’s gene diversity (GD) of high-molecular-weight glutenin subunits (HMW-GSs) were 0.86 and 0.88, respectively. UPGMA clustering analysis indicated that the 238 T. urartu accessions could be classified into two subpopulations, of which Cluster I contained accessions from Eastern Mediterranean coast and those from Mesopotamia and Transcaucasia belonged to Cluster II. The wide range of genetic diversity along with the manageable number of accessions makes it one of the best collections for mining valuable genes based on marker-trait association. Significant associations were observed between simple sequence repeats (SSR) or HMW-GSs and six morphological traits: heading date (HD), plant height (PH), spike length (SPL), spikelet number per spike (SPLN), tiller angle (TA) and grain length (GL). Conclusions Our data demonstrated that SSRs and HMW-GSs were useful markers for identification of beneficial genes controlling important traits in T. urartu, and subsequently for their conservation and future utilization, which may be useful for genetic improvement of the cultivated hexaploid wheat.http://link.springer.com/article/10.1186/s12870-017-1058-7Triticum urartuGenetic diversitySSR markersHMW-GSMarker-trait association |
| spellingShingle | Xin Wang Guangbin Luo Wenlong Yang Yiwen Li Jiazhu Sun Kehui Zhan Dongcheng Liu Aimin Zhang Genetic diversity, population structure and marker-trait associations for agronomic and grain traits in wild diploid wheat Triticum urartu BMC Plant Biology Triticum urartu Genetic diversity SSR markers HMW-GS Marker-trait association |
| title | Genetic diversity, population structure and marker-trait associations for agronomic and grain traits in wild diploid wheat Triticum urartu |
| title_full | Genetic diversity, population structure and marker-trait associations for agronomic and grain traits in wild diploid wheat Triticum urartu |
| title_fullStr | Genetic diversity, population structure and marker-trait associations for agronomic and grain traits in wild diploid wheat Triticum urartu |
| title_full_unstemmed | Genetic diversity, population structure and marker-trait associations for agronomic and grain traits in wild diploid wheat Triticum urartu |
| title_short | Genetic diversity, population structure and marker-trait associations for agronomic and grain traits in wild diploid wheat Triticum urartu |
| title_sort | genetic diversity population structure and marker trait associations for agronomic and grain traits in wild diploid wheat triticum urartu |
| topic | Triticum urartu Genetic diversity SSR markers HMW-GS Marker-trait association |
| url | http://link.springer.com/article/10.1186/s12870-017-1058-7 |
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