Characterization and practical use of self-compatibility in outcrossing grass species Cropano, Claudio Place, Iain Manzanares, Chloé Do Canto, Javier Lubberstedt, Thomas Studer, Bruno Thorogood, Daniel
dc.contributor.department Agronomy 2021-06-28T17:55:10.000 2021-08-14T01:05:27Z 2021-08-14T01:05:27Z Fri Jan 01 00:00:00 UTC 2021 2021-06-04
dc.description.abstract <p>• Background Self-incompatibility (SI) systems prevent self-fertilization in several species of Poaceae, many of which are economically important forage, bioenergy and turf grasses. Self-incompatibility ensures cross-pollination and genetic diversity but restricts the ability to fix useful genetic variation. In most inbred crops it is possible to develop high-performing homozygous parental lines by self-pollination, which then enables the creation of F1 hybrid varieties with higher performance, a phenomenon known as heterosis. The inability to fully exploit heterosis in outcrossing grasses is partially responsible for lower levels of improvement in breeding programmes compared with inbred crops. However, SI can be overcome in forage grasses to create self-compatible populations. This is generating interest in understanding the genetical basis of self-compatibility (SC), its significance for reproductive strategies and its exploitation for crop improvement, especially in the context of F1 hybrid breeding.</p> <p>• Scope We review the literature on SI and SC in outcrossing grass species. We review the currently available genomic tools and approaches used to discover and characterize novel SC sources. We discuss opportunities barely explored for outcrossing grasses that SC facilitates. Specifically, we discuss strategies for wide SC introgression in the context of the Lolium–Festuca complex and the use of SC to develop immortalized mapping populations for the dissection of a wide range of agronomically important traits. The germplasm available is a valuable practical resource and will aid understanding the basis of inbreeding depression and hybrid vigour in key temperate forage grass species.</p> <p>• Conclusions A better understanding of the genetic control of additional SC loci offers new insight into SI systems, their evolutionary origins and their reproductive significance. Heterozygous outcrossing grass species that can be readily selfed facilitate studies of heterosis. Moreover, SC introduction into a range of grass species will enable heterosis to be exploited in innovative ways in genetic improvement programmes.</p>
dc.description.comments <p>This article is published as Cropano, Claudio, Iain Place, Chloé Manzanares, Javier Do Canto, Thomas Lübberstedt, Bruno Studer, and Daniel Thorogood. "Characterisation and practical use of self-compatibility in outcrossing grass species." <em>Annals of Botany</em> 127 (2021): 841–852. doi:<a href="">10.1093/aob/mcab043</a>.</p>
dc.format.mimetype application/pdf
dc.identifier archive/
dc.identifier.articleid 1766
dc.identifier.contextkey 23562542
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath agron_pubs/717
dc.language.iso en
dc.source.bitstream archive/|||Sat Jan 15 01:43:27 UTC 2022
dc.source.uri 10.1093/aob/mcab043
dc.subject.disciplines Agriculture
dc.subject.disciplines Agronomy and Crop Sciences
dc.subject.disciplines Plant Breeding and Genetics
dc.subject.keywords Self-compatibility
dc.subject.keywords self-incompatibility
dc.subject.keywords inbreeding
dc.subject.keywords Poaceae
dc.subject.keywords introgression
dc.subject.keywords inbreeding depression
dc.subject.keywords heterosis
dc.subject.keywords F1 hybrid breeding
dc.title Characterization and practical use of self-compatibility in outcrossing grass species
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication 4e4330cd-db15-4ac5-8924-41119139cf32
relation.isOrgUnitOfPublication fdd5c06c-bdbe-469c-a38e-51e664fece7a
Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
993.31 KB
Adobe Portable Document Format