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Organic Multiuse Naked Barley Characterization and Genomic Studies.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Organic Multiuse Naked Barley Characterization and Genomic Studies./
作者:	Massman, Chris.
面頁冊數:	1 online resource (155 pages)
附註:	Source: Dissertations Abstracts International, Volume: 83-12, Section: B.
Contained By:	Dissertations Abstracts International83-12B.
標題:	Plant sciences. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29215667click for full text (PQDT)
ISBN:	9798819370711

Organic Multiuse Naked Barley Characterization and Genomic Studies.
Massman, Chris.

Organic Multiuse Naked Barley Characterization and Genomic Studies. - 1 online resource (155 pages)

Source: Dissertations Abstracts International, Volume: 83-12, Section: B.

Thesis (Ph.D.)--The University of Wisconsin - Madison, 2023.

Includes bibliographical references

Barley is an important cereal grain with many end-uses and health benefits. The hulless, or "naked," trait provides additional opportunity to the industry in that the normally tightly adhering hull will thresh freely during harvest and cleaning. The production and selection of organic naked barley germplasm in this study combines traditional plant breeding and genomic methods. The first step is the characterization of advanced lines in a regional yield trial and assessment of the genotype by environment interactions acting on the panel. Two groups of environments with similar genotypic rankings were identified in this work. This information will allow the tailoring of breeding approaches to specific regions as well as the use of characterized lines as potential parents in the breeding process. The second portion of this work delves more specifically into the quantitative nature of the free-threshing character of naked barley. The propensity of the hull to fall from the grain is defined here as threshability. Threshability is critical in naked barley as genotypes that fail to shed the hull will require the same dehulling that is used in hulled grains. This work used a diverse panel of 350 genotypes grown in nine environments to identify two QTL, one on chromosome 2H and one on chromosome 3H, relevant to threshability. GWAS was used to identify these loci, while accounting for population structure and linkage. Extending this genomic work, genomic predictions were performed to test the utility of genomic selection for increasing genetic gain of threshability. A predictive ability of .84 for threshability was obtained for this study. Additional covariates, including plump percentage, thin percentage, test weight, and marker data from the associated QTL were included in the genomic prediction model; however, they were not effective in further increasing accuracy.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2023

Mode of access: World Wide Web

ISBN: 9798819370711Subjects--Topical Terms:

3173832
Plant sciences.
Subjects--Index Terms:

Naked barleyIndex Terms--Genre/Form:

542853
Electronic books.

Organic Multiuse Naked Barley Characterization and Genomic Studies.
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504 $a Includes bibliographical references
520 $a Barley is an important cereal grain with many end-uses and health benefits. The hulless, or "naked," trait provides additional opportunity to the industry in that the normally tightly adhering hull will thresh freely during harvest and cleaning. The production and selection of organic naked barley germplasm in this study combines traditional plant breeding and genomic methods. The first step is the characterization of advanced lines in a regional yield trial and assessment of the genotype by environment interactions acting on the panel. Two groups of environments with similar genotypic rankings were identified in this work. This information will allow the tailoring of breeding approaches to specific regions as well as the use of characterized lines as potential parents in the breeding process. The second portion of this work delves more specifically into the quantitative nature of the free-threshing character of naked barley. The propensity of the hull to fall from the grain is defined here as threshability. Threshability is critical in naked barley as genotypes that fail to shed the hull will require the same dehulling that is used in hulled grains. This work used a diverse panel of 350 genotypes grown in nine environments to identify two QTL, one on chromosome 2H and one on chromosome 3H, relevant to threshability. GWAS was used to identify these loci, while accounting for population structure and linkage. Extending this genomic work, genomic predictions were performed to test the utility of genomic selection for increasing genetic gain of threshability. A predictive ability of .84 for threshability was obtained for this study. Additional covariates, including plump percentage, thin percentage, test weight, and marker data from the associated QTL were included in the genomic prediction model; however, they were not effective in further increasing accuracy.
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650 4 $a Agricultural engineering. $3 3168406
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856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29215667 $z click for full text (PQDT)