Author: Andrea Correa Varella
Publisher:
ISBN:
Category : Cephus cinctus
Languages : en
Pages : 145
Book Description
The wheat stem sawfly, Cephus cinctus Norton (WSS), has been a serious pest of wheat in the Northern Great Plains of North America for decades. Host plant resistance has been most consistently effective and is the foundation for integrated pest management of the WSS; therefore, the main objective of this research was to enhance the repertoire of genetic resistance to WSS available for exploitation by wheat breeders through marker-assisted selection (MAS). We used two strategies to achieve our goal. First, we better characterized resistance provided by previously identified quantitative trait loci (QTL). For that, we developed populations of near-isogenic lines (NILs) polymorphic for resistance QTLs on chromosomes 2D (Qwss.msub-2D), 3B (Qss-msub-3BL) and 4A (Qwss.msub-4A.1). Near-isogenic lines were tested greenhouse cage trials and in the field at both WSS-infested and uninfested locations. The Qwss.msub-4A.1 was shown to affect host plant attractiveness to foraging females, but did not change oviposition preference after females landed on the wheat stem. The Qwss.msub-2D and Qss-msub-3BL where shown to be associated with decreased preference for oviposition. The Qss-msub-3BL was also shown to be associated with temporal patterns of stem solidness expression, with the allele derived from the spring wheat cultivar Conan providing decreased infestation, high neonatal mortality, high levels of early stem solidness, and a rapid rate of pith retraction during stem maturation. Together, these studies characterized the effect of each one of these QTLs on WSS resistance. This information will help wheat breeders and entomologists to better integrate management strategies to reduce damage caused by the WSS. Our second strategy, involved the identification of new marker-trait associations for WSS resistance. For that, we used a panel of 244 elite spring wheat lines from North America. By conducting an association mapping study we were able to identify several QTLs for WSS resistance, including QTLs for early and late stem solidness, heading date, stem cutting, and larval mortality. This study showed that improvements in WSS management may be obtained using alleles that already exist in elite germplasm. Collectively, our research provided wheat breeders with a better tool kit for improving resistance to the WSS.
Genetic Basis of Wheat Resistance to the Wheat Stem Sawfly
Author: Andrea Correa Varella
Publisher:
ISBN:
Category : Cephus cinctus
Languages : en
Pages : 145
Book Description
The wheat stem sawfly, Cephus cinctus Norton (WSS), has been a serious pest of wheat in the Northern Great Plains of North America for decades. Host plant resistance has been most consistently effective and is the foundation for integrated pest management of the WSS; therefore, the main objective of this research was to enhance the repertoire of genetic resistance to WSS available for exploitation by wheat breeders through marker-assisted selection (MAS). We used two strategies to achieve our goal. First, we better characterized resistance provided by previously identified quantitative trait loci (QTL). For that, we developed populations of near-isogenic lines (NILs) polymorphic for resistance QTLs on chromosomes 2D (Qwss.msub-2D), 3B (Qss-msub-3BL) and 4A (Qwss.msub-4A.1). Near-isogenic lines were tested greenhouse cage trials and in the field at both WSS-infested and uninfested locations. The Qwss.msub-4A.1 was shown to affect host plant attractiveness to foraging females, but did not change oviposition preference after females landed on the wheat stem. The Qwss.msub-2D and Qss-msub-3BL where shown to be associated with decreased preference for oviposition. The Qss-msub-3BL was also shown to be associated with temporal patterns of stem solidness expression, with the allele derived from the spring wheat cultivar Conan providing decreased infestation, high neonatal mortality, high levels of early stem solidness, and a rapid rate of pith retraction during stem maturation. Together, these studies characterized the effect of each one of these QTLs on WSS resistance. This information will help wheat breeders and entomologists to better integrate management strategies to reduce damage caused by the WSS. Our second strategy, involved the identification of new marker-trait associations for WSS resistance. For that, we used a panel of 244 elite spring wheat lines from North America. By conducting an association mapping study we were able to identify several QTLs for WSS resistance, including QTLs for early and late stem solidness, heading date, stem cutting, and larval mortality. This study showed that improvements in WSS management may be obtained using alleles that already exist in elite germplasm. Collectively, our research provided wheat breeders with a better tool kit for improving resistance to the WSS.
Publisher:
ISBN:
Category : Cephus cinctus
Languages : en
Pages : 145
Book Description
The wheat stem sawfly, Cephus cinctus Norton (WSS), has been a serious pest of wheat in the Northern Great Plains of North America for decades. Host plant resistance has been most consistently effective and is the foundation for integrated pest management of the WSS; therefore, the main objective of this research was to enhance the repertoire of genetic resistance to WSS available for exploitation by wheat breeders through marker-assisted selection (MAS). We used two strategies to achieve our goal. First, we better characterized resistance provided by previously identified quantitative trait loci (QTL). For that, we developed populations of near-isogenic lines (NILs) polymorphic for resistance QTLs on chromosomes 2D (Qwss.msub-2D), 3B (Qss-msub-3BL) and 4A (Qwss.msub-4A.1). Near-isogenic lines were tested greenhouse cage trials and in the field at both WSS-infested and uninfested locations. The Qwss.msub-4A.1 was shown to affect host plant attractiveness to foraging females, but did not change oviposition preference after females landed on the wheat stem. The Qwss.msub-2D and Qss-msub-3BL where shown to be associated with decreased preference for oviposition. The Qss-msub-3BL was also shown to be associated with temporal patterns of stem solidness expression, with the allele derived from the spring wheat cultivar Conan providing decreased infestation, high neonatal mortality, high levels of early stem solidness, and a rapid rate of pith retraction during stem maturation. Together, these studies characterized the effect of each one of these QTLs on WSS resistance. This information will help wheat breeders and entomologists to better integrate management strategies to reduce damage caused by the WSS. Our second strategy, involved the identification of new marker-trait associations for WSS resistance. For that, we used a panel of 244 elite spring wheat lines from North America. By conducting an association mapping study we were able to identify several QTLs for WSS resistance, including QTLs for early and late stem solidness, heading date, stem cutting, and larval mortality. This study showed that improvements in WSS management may be obtained using alleles that already exist in elite germplasm. Collectively, our research provided wheat breeders with a better tool kit for improving resistance to the WSS.
Suppression of Wheat Stem Sawfly with Resistant Wheat
Author: Philip Luginbill
Publisher:
ISBN:
Category : Sawflies
Languages : en
Pages : 12
Book Description
Publisher:
ISBN:
Category : Sawflies
Languages : en
Pages : 12
Book Description
Wheat Rusts
Author: R. A. McIntosh
Publisher: CSIRO Publishing
ISBN:
Category : Science
Languages : en
Pages : 216
Book Description
Although stem rust is mostly controlled by means of resistance cultivars, leaf and stripe rust continue as major problems in many wheat-growing areas of the world. Wheat Rusts: An Atlas of Resistance Genes provides a basis to identify genes for resistance to stem, leaf and stripe rusts of wheat. Typical phenotypes associated with most known genes for resistance to these three diseases are illustrated in full colour. This book will assist plant breeders and pathologists to identify candidate resistance genes, thereby saving substantial time and resources. Prepared by well-known specialists from a leading international laboratory, Wheat Rusts: An Atlas of Resistance Genes comprises an introductory chapter, details of individual resistance genes, appendices and an index. Details for each gene include chromosome location, aspects of genetics and pathogen variation, the effect of environment of expression, origin, availability in genetic and breeding stocks and use in agriculture.
Publisher: CSIRO Publishing
ISBN:
Category : Science
Languages : en
Pages : 216
Book Description
Although stem rust is mostly controlled by means of resistance cultivars, leaf and stripe rust continue as major problems in many wheat-growing areas of the world. Wheat Rusts: An Atlas of Resistance Genes provides a basis to identify genes for resistance to stem, leaf and stripe rusts of wheat. Typical phenotypes associated with most known genes for resistance to these three diseases are illustrated in full colour. This book will assist plant breeders and pathologists to identify candidate resistance genes, thereby saving substantial time and resources. Prepared by well-known specialists from a leading international laboratory, Wheat Rusts: An Atlas of Resistance Genes comprises an introductory chapter, details of individual resistance genes, appendices and an index. Details for each gene include chromosome location, aspects of genetics and pathogen variation, the effect of environment of expression, origin, availability in genetic and breeding stocks and use in agriculture.
Wheat Rusts
Author: R. A. McIntosh
Publisher:
ISBN: 9780643054288
Category : Electronic books
Languages : en
Pages : 200
Book Description
Although stem rust is mostly controlled by means of resistance cultivars, leaf and stripe rust continue as major problems in many wheat-growing areas of the world. Wheat Rusts: An Atlas of Resistance Genes provides a basis to identify genes for resistance to stem, leaf and stripe rusts of wheat. Typical phenotypes associated with most known genes for resistance to these three diseases are illustrated in full colour. This book will assist plant breeders and pathologists to identify candidate resistance genes, thereby saving substantial time and resources. Prepared by well-known specialists from a leading international laboratory, Wheat Rusts: An Atlas of Resistance Genes comprises an introductory chapter, details of individual resistance genes, appendices and an index. Details for each gene include chromosome location, aspects of genetics and pathogen variation, the effect of environment of expression, origin, availability in genetic and breeding stocks and use in agriculture.
Publisher:
ISBN: 9780643054288
Category : Electronic books
Languages : en
Pages : 200
Book Description
Although stem rust is mostly controlled by means of resistance cultivars, leaf and stripe rust continue as major problems in many wheat-growing areas of the world. Wheat Rusts: An Atlas of Resistance Genes provides a basis to identify genes for resistance to stem, leaf and stripe rusts of wheat. Typical phenotypes associated with most known genes for resistance to these three diseases are illustrated in full colour. This book will assist plant breeders and pathologists to identify candidate resistance genes, thereby saving substantial time and resources. Prepared by well-known specialists from a leading international laboratory, Wheat Rusts: An Atlas of Resistance Genes comprises an introductory chapter, details of individual resistance genes, appendices and an index. Details for each gene include chromosome location, aspects of genetics and pathogen variation, the effect of environment of expression, origin, availability in genetic and breeding stocks and use in agriculture.
Morphological Resistance of Some of the Gramineae to the Wheat Stem Sawfly (Cephus Cinctus Norton)
Author: George R. Roemhild
Publisher:
ISBN:
Category : Grain
Languages : en
Pages : 84
Book Description
Publisher:
ISBN:
Category : Grain
Languages : en
Pages : 84
Book Description
Resistance of Varieties of Portuguese Wheat, Triticum Aestivum L. Em Thell to Wheat Stem Sawfly [with List of Literature Cited
Author:
Publisher:
ISBN:
Category : Plants
Languages : en
Pages : 8
Book Description
Publisher:
ISBN:
Category : Plants
Languages : en
Pages : 8
Book Description
Blending Resistant and Susceptible Winter Wheat for Wheat Stem Sawfly (Cephus Cinctus Norton) Management
Author: Debra Kay Waters
Publisher:
ISBN:
Category : Cephus cinctus
Languages : en
Pages : 322
Book Description
Publisher:
ISBN:
Category : Cephus cinctus
Languages : en
Pages : 322
Book Description
Agriculture Handbook
Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 676
Book Description
Set includes revised editions of some issues.
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 676
Book Description
Set includes revised editions of some issues.
The Basic Principles of Insect Population Suppression and Management
Author: E. F. Knipling
Publisher:
ISBN:
Category : Insect pests
Languages : en
Pages : 676
Book Description
Publisher:
ISBN:
Category : Insect pests
Languages : en
Pages : 676
Book Description
Plant Breeding Reviews, Volume 22
Author: Jules Janick
Publisher: John Wiley & Sons
ISBN: 0471463388
Category : Science
Languages : en
Pages : 457
Book Description
Plant Breeding Reviews, Volume 22 presents state-of-the-art reviews on plant genetics and the breeding of all types of crops by both traditional means and molecular methods. The emphasis of the series is on methodology, a practical understanding of crop genetics, and applications to major crops.
Publisher: John Wiley & Sons
ISBN: 0471463388
Category : Science
Languages : en
Pages : 457
Book Description
Plant Breeding Reviews, Volume 22 presents state-of-the-art reviews on plant genetics and the breeding of all types of crops by both traditional means and molecular methods. The emphasis of the series is on methodology, a practical understanding of crop genetics, and applications to major crops.