Reproductive Barriers and Gene Introgression in Rice Species

2021 ◽  
Keyword(s):  
Gene Introgression ◽  
Reproductive Barriers

scholarly journals Editorial: Reproductive Barriers and Gene Introgression in Rice Species

2021 ◽  
Vol 12 ◽  
Author(s):  
Dayun Tao ◽  
Kenneth L. McNally ◽  
Yohei Koide ◽  
Kazuki Matsubara
Keyword(s):  
Gene Introgression ◽  
Reproductive Barriers

Hybrid Zones and the Genetic Architecture of a Barrier to Gene Flow Between Two Sunflower Species

Genetics ◽  
1999 ◽  
Vol 152 (2) ◽  
pp. 713-727 ◽  
Author(s):  
Loren H Rieseberg ◽  
Jeannette Whitton ◽  
Keith Gardner
Keyword(s):  
Genetic Study ◽  
Genetic Architecture ◽  
Chromosomal Rearrangements ◽  
Pollen Sterility ◽  
Model Organisms ◽  
Hybrid Zones ◽  
Reproductive Barriers ◽  
Natural Hybrid ◽  
Generation Times ◽  
Helianthus Petiolaris

Abstract Genetic analyses of reproductive barriers represent one of the few methods by which theories of speciation can be tested. However, genetic study is often restricted to model organisms that have short generation times and are easily propagated in the laboratory. Replicate hybrid zones with a diversity of recombinant genotypes of varying age offer increased resolution for genetic mapping experiments and expand the pool of organisms amenable to genetic study. Using 88 markers distributed across 17 chromosomes, we analyze the introgression of chromosomal segments of Helianthus petiolaris into H. annuus in three natural hybrid zones. Introgression was significantly reduced relative to neutral expectations for 26 chromosomal segments, suggesting that each segment contains one or more factors that contribute to isolation. Pollen sterility is significantly associated with 16 of these 26 segments, providing a straightforward explanation of why this subset of blocks is disadvantageous in hybrids. In addition, comparison of rates of introgression across colinear vs. rearranged chromosomes indicates that close to 50% of the barrier to introgression is due to chromosomal rearrangements. These results demonstrate the utility of hybrid zones for identifying factors contributing to isolation and verify the prediction of increased resolution relative to controlled crosses.

Impact of the Coffea canephora gene introgression on beverage quality of C. arabica

2003 ◽  
Vol 107 (3) ◽  
pp. 387-394 ◽  
Author(s):  
B. Bertrand ◽  
B. Guyot ◽  
F. Anthony ◽  
P. Lashermes
Keyword(s):  
Coffea Canephora ◽  
Gene Introgression

scholarly journals On the persistence of reproductive barriers inEucalyptus: the bridging of mechanical barriers to zygote formation byF1hybrids is counteracted by intrinsic post-zygotic incompatibilities

2016 ◽  
Vol 118 (3) ◽  
pp. 431-444 ◽  
Author(s):  
Matthew J. Larcombe ◽  
João Costa e Silva ◽  
Paul Tilyard ◽  
Peter Gore ◽  
Brad M. Potts
Keyword(s):  
Reproductive Barriers ◽  
Zygote Formation

GENETICS OF LUPINUS VI. REPRODUCTIVE BARRIERS IN THE NANUS GROUP

Taxon ◽  
1974 ◽  
Vol 23 (4) ◽  
pp. 585-594 ◽  
Author(s):  
Mathilde Elliot ◽  
James Harding ◽  
C. B. Mankinen
Keyword(s):  
Reproductive Barriers

scholarly journals Genomic contributions in livestock gene introgression programmes

2005 ◽  
Vol 37 (4) ◽  
pp. 291 ◽  
Author(s):  
Eileen Wall ◽  
Peter M Visscher ◽  
Frédéric Hospital ◽  
John A Woolliams
Keyword(s):  
Gene Introgression
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