NDLI: Hybridization, introgression, and linkage evolution

Content Provider	Springer Nature Link
Author	Rieseberg, Loren H. Baird, Stuart J.E. Gardner, Keith A.
Copyright Year	2000
Abstract	Genetic mapping methods provide a unique opportunity to study the interactions of differentiated genes and genomes in a hybrid genetic background. After a brief discussion of theoretical and analytical concerns, we review the application of these methods to a wide range of evolutionary issues. Map-based studies of experimental hybrids indicate that most postzygotic reproductive barriers in plants are polygenic and that the expression of extreme or novel traits in segregating hybrids (transgressive segregation) results from the complementary action of divergent parental alleles. However, genetic studies of hybrid vigor do not concur in their interpretations of the relative roles of dominance, overdominance, and epistasis. Map-based studies of natural hybrids are much rarer, but the few existing studies confirm the polygenic basis of postzygotic barriers and demonstrate the utility of genetic linkage for detecting cryptic introgression. In addition, studies of experimental and natural hybrid lineages provide compelling evidence that homoploid hybrid speciation has occurred in nature, and that it represents a rapid and repeatable mode of speciation. Data further indicate that this mode is facilitated by strong fertility selection and high chromosomal mutation rates. We recommend that future studies of hybrid genomes focus on natural hybrids, not only because of the paucity of data in this area, but also because of the availability of highly recombinant hybrid genotypes in hybrid zones. Of particular value will be studies of long-lived or difficult-to-propagate organisms, which previously have not been amenable to genetic study.
Starting Page	205
Ending Page	224
Page Count	20
File Format	PDF
ISSN	01674412
Journal	Plant Molecular Biology
Volume Number	42
Issue Number	1
e-ISSN	15735028
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2000-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Biochemistry Plant Sciences Plant Pathology
Content Type	Text
Resource Type	Article
Subject	Genetics Plant Science Medicine Agronomy and Crop Science

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Alien introgression in rice

Gene flow between cultivated sunflower and Helianthus petiolaris (Asteraceae)

Plastid genome evolution in mycoheterotrophic Ericaceae

Optimized breeding strategies for multiple trait integration: I. Minimizing linkage drag in single event introgression

Linkage map of phenotype and RFLP markers in rice

Genome-wide Introgression Lines and their Use in Genetic and Molecular Dissection of Complex Phenotypes in Rice (Oryza sativa L.)

The evolution of nodulation

Genome evolution in polyploids

A transcriptomic analysis reveals the nature of salinity tolerance of a wheat introgression line

Hybridization, introgression, and linkage evolution

Similar Documents

Alien introgression in rice

Gene flow between cultivated sunflower and Helianthus petiolaris (Asteraceae)

Plastid genome evolution in mycoheterotrophic Ericaceae

Optimized breeding strategies for multiple trait integration: I. Minimizing linkage drag in single event introgression

Linkage map of phenotype and RFLP markers in rice

Genome-wide Introgression Lines and their Use in Genetic and Molecular Dissection of Complex Phenotypes in Rice (Oryza sativa L.)

The evolution of nodulation

Genome evolution in polyploids

A transcriptomic analysis reveals the nature of salinity tolerance of a wheat introgression line

Hybridization, introgression, and linkage evolution