Tibet as a Potential Domestication Center of Cultivated Barley of China

Ren, Xifeng; Nevo, Eviatar; Sun, Dongfa; Sun, Genlou

doi:10.1371/journal.pone.0062700

Cited by 31 publications

(39 citation statements)

References 49 publications

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“…vulgare) was domesticated about 10 000 years ago (Badr et al, 2000), most likely from multiple domestication centers (Morrell and Clegg, 2007;Saisho and Purugganan, 2007;Fuller et al, 2011;Ren et al, 2013). An adaptable species, barley has been of great importance also in regions where climate or soil is sub-optimal for agriculture.…”

Section: Introductionmentioning

confidence: 99%

Farmers without borders—genetic structuring in century old barley (Hordeum vulgare)

et al. 2014

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The geographic distribution of genetic diversity can reveal the evolutionary history of a species. For crop plants, phylogeographic patterns also indicate how seed has been exchanged and spread in agrarian communities. Such patterns are, however, easily blurred by the intense seed trade, plant improvement and even genebank conservation during the twentieth century, and discerning fine-scale phylogeographic patterns is thus particularly challenging. Using historical crop specimens, these problems are circumvented and we show here how high-throughput genotyping of historical nineteenth century crop specimens can reveal detailed geographic population structure. Thirty-one historical and nine extant accessions of North European landrace barley (Hordeum vulgare L.), in total 231 individuals, were genotyped on a 384 single nucleotide polymorphism assay. The historical material shows constant high levels of within-accession diversity, whereas the extant accessions show more varying levels of diversity and a higher degree of total genotype sharing. Structure, discriminant analysis of principal components and principal component analysis cluster the accessions in latitudinal groups across country borders in Finland, Norway and Sweden. F ST statistics indicate strong differentiation between accessions from southern Fennoscandia and accessions from central or northern Fennoscandia, and less differentiation between central and northern accessions. These findings are discussed in the context of contrasting historical records on intense within-country south to north seed movement. Our results suggest that although seeds were traded long distances, long-term cultivation has instead been of locally available, possibly better adapted, genotypes.

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Section: Introductionmentioning

confidence: 99%

Farmers without borders—genetic structuring in century old barley (Hordeum vulgare)

et al. 2014

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“…Morphological, archaeological, cytogenetic and isozyme data revealed that wild barley on the Qinghai-Tibet Plateau is different from that in the Fertile Crescent33. Diversity array technology (DArT) data and population-based phylogenetic analyses indicated that the Tibetan Plateau and its vicinity is one of the domestication centers of cultivated barley3233. Recent transcriptome profiling and population-based genetic diversity analysis also provided strong evidence that barley domestication may have occurred independently in geographically distinct regions3435.…”

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confidence: 99%

Molecular evidence of RNA polymerase II gene reveals the origin of worldwide cultivated barley

Wang

Ren

Sun

et al. 2016

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The origin and domestication of cultivated barley have long been under debate. A population-based resequencing and phylogenetic analysis of the single copy of RPB2 gene was used to address barley domestication, to explore genetic differentiation of barley populations on the worldwide scale, and to understand gene-pool exchanges during the spread and subsequent development of barley cultivation. Our results revealed significant genetic differentiation among three geographically distinct wild barley populations. Differences in haplotype composition among populations from different geographical regions revealed that modern cultivated barley originated from two major wild barley populations: one from the Near East Fertile Crescent and the other from the Tibetan Plateau, supporting polyphyletic origin of cultivated barley. The results of haplotype frequencies supported multiple domestications coupled with widespread introgression events that generated genetic admixture between divergent barley gene pools. Our results not only provide important insight into the domestication and evolution of cultivated barley, but also enhance our understanding of introgression and distinct selection pressures in different environments on shaping the genetic diversity of worldwide barley populations, thus further facilitating the effective use of the wild barley germplasm.

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“…The Himalayas can be considered a region of domesticated barley diversification (Badr et al, 2000), while Tibet is a potential domestication center of cultivated barley in China (Ren et al, 2013). Due to its complex topography and diverse climate zones, soil types, regional microclimates, and habitat, the Qinghai-Tibet Plateau generates abundant diversity of genetic germplasm.…”

Section: Diversitymentioning

confidence: 99%

Genetic variability in agronomic traits of a germplasm collection of hulless barley

2015

Genet. Mol. Res.

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ABSTRACT. Germplasm collections represent an important genetic source for crop improvements. In this study, 220 accessions of hulless barley were collected worldwide and their genetic diversity was investigated. Sixteen agronomic traits, including yield and yield components, grain morphology, leaf size, plant height, and lodging resistance, were assessed under field conditions. All studied traits exhibited large variation. Thousand seed weight determined yield, and was strongly affected by spike length and spike number. Four varieties, Gaoyuan Zao 1, Fu 8-4, Zang 0331, and Harry (WDM00618), showed high resistance to lodging. Significant correlations among the traits were observed, indicating trait interactions. Life cycle had the smallest coefficient of variation (CV) among native, foreign, and improved varieties, whereas the CV of cellulose content was more or less balanced. Among the accessions from domestic and foreign germplasm, the CV for life cycle remained the lowest, whereas those for carbon/nitrogen and spike number per plant were the highest. Interestingly, higher genetic diversity was observed in domestic than in foreign accessions. Together, our findings demonstrate that there is abundant diversity in worldwide hulless barley germplasm collections, which would be useful when introducing 18357 Genetic variability in hulless barley ©FUNPEC-RP www.funpecrp.com.br Genetics and Molecular Research 14 (4): 18356-18369 (2015) their desirable traits into cultivars of hulless barley to improve yield and other agronomic traits.

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Tibet as a Potential Domestication Center of Cultivated Barley of China

Cited by 31 publications

References 49 publications

Farmers without borders—genetic structuring in century old barley (Hordeum vulgare)

Farmers without borders—genetic structuring in century old barley (Hordeum vulgare)

Molecular evidence of RNA polymerase II gene reveals the origin of worldwide cultivated barley

Genetic variability in agronomic traits of a germplasm collection of hulless barley

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