Dissecting the Genetic Basis of Grain Size and Weight in Barley (Hordeum vulgare L.) by QTL and Comparative Genetic Analyses

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dc.creator Wang, Qifei
dc.creator Sun, Genlou
dc.creator Ren, Xifeng
dc.creator Du, Binbin
dc.creator Cheng, Yun
dc.creator Wang, Yixiang
dc.creator Li, Chengdao
dc.creator Sun, Dongfa
dc.date.accessioned 2021-11-30T13:34:06Z
dc.date.available 2021-11-30T13:34:06Z
dc.date.issued 2019-04-24
dc.identifier.issn 1664-462X
dc.identifier.uri http://library2.smu.ca/xmlui/handle/01/29972
dc.description Published version en_CA
dc.description.abstract Grain size and weight are crucial components of barley yield and quality and are the target characteristics of domestication and modern breeding. Despite this, little is known about the genetic and molecular mechanisms of grain size and weight in barley. Here, we evaluated nine traits determining grain size and weight, including thousand grain weight (Tgw), grain length (Gl), grain width (Gw), grain length-width ratio (Lwr), grain area (Ga), grain perimeter (Gp), grain diameter (Gd), grain roundness (Gr), and factor form density (Ffd), in a double haploid (DH) population for three consecutive years. Using five mapping methods, we successfully identified 60 reliable QTLs and 27 hotspot regions that distributed on all chromosomes except 6H which controls the nine traits of grain size and weight. Moreover, we also identified 164 barley orthologs of 112 grain size/weight genes from rice, maize, wheat and 38 barley genes that affect grain yield. A total of 45 barley genes or orthologs were identified as potential candidate genes for barley grain size and weight, including 12, 20, 9, and 4 genes or orthologs for barley, rice, maize, and wheat, respectively. Importantly, 20 of them were located in the 14 QTL hotspot regions on chromosome 1H, 2H, 3H, 5H, and 7H, which controls barley grain size and weight. These results indicated that grain size/weight genes of other cereal species might have the same or similar functions in barley. Our findings provide new insights into the understanding of the genetic basis of grain size and weight in barley, and new information to facilitate high-yield breeding in barley. The function of these potential candidate genes identified in this study are worth exploring and studying in detail. en_CA
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dc.description.provenance Made available in DSpace on 2021-11-30T13:34:06Z (GMT). No. of bitstreams: 1 Sun_Genlou_article_2019_b.pdf: 2542071 bytes, checksum: e6430d0fe9a16bc33397024989d6bdbe (MD5) Previous issue date: 2019-04-24 en
dc.language.iso en en_CA
dc.publisher Frontiers Media en_CA
dc.relation.uri https://doi.org/10.3389/fpls.2019.00469
dc.rights © 2019 Wang, Sun, Ren, Du, Cheng, Wang, Li and Sun. <p xmlns:cc="http://creativecommons.org/ns#" >This work is licensed under <a href="http://creativecommons.org/licenses/by-nc-nd/4.0/?ref=chooser-v1" target="_blank" rel="license noopener noreferrer" style="display:inline-block;">CC BY-NC-ND 4.0<img style="height:22px!important;margin-left:3px;vertical-align:text-bottom;" src="https://mirrors.creativecommons.org/presskit/icons/cc.svg?ref=chooser-v1"><img style="height:22px!important;margin-left:3px;vertical-align:text-bottom;" src="https://mirrors.creativecommons.org/presskit/icons/by.svg?ref=chooser-v1"><img style="height:22px!important;margin-left:3px;vertical-align:text-bottom;" src="https://mirrors.creativecommons.org/presskit/icons/nc.svg?ref=chooser-v1"><img style="height:22px!important;margin-left:3px;vertical-align:text-bottom;" src="https://mirrors.creativecommons.org/presskit/icons/nd.svg?ref=chooser-v1"></a></p>
dc.subject.lcsh Agricultural genome mapping
dc.subject.lcsh Comparative genomics
dc.subject.lcsh Barley -- Genetics
dc.subject.lcsh Barley -- Yields
dc.title Dissecting the Genetic Basis of Grain Size and Weight in Barley (Hordeum vulgare L.) by QTL and Comparative Genetic Analyses en_CA
dc.type Text en_CA
dcterms.bibliographicCitation Frontier Plant Science 10, 469. (2019) en_CA
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© 2019 Wang, Sun, Ren, Du, Cheng, Wang, Li and Sun.

This work is licensed under CC BY-NC-ND 4.0

 
Published Version: https://doi.org/10.3389/fpls.2019.00469
 
 

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