Mapping a New Source of Self-fertility in Perennial Ryegrass (Lolium perenne L.)

Date
2013-12-01
Authors
Arias Aguirre, Andrea
Studer, Bruno
do Canto, Javier
Frei, Ursula
Lubberstedt, Thomas
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Research Projects
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Agronomy
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Abstract

There is a rising interest of moving towards hybrid breeding in outcrossing species. Self-compatibility (SC), which occurs at low rates in self-incompatible species, could be used to develop inbred lines, a key requirement for hybrid breeding programs. In perennial ryegrass, the existence of SC independent from the self-incompatibility (SI) loci S and Z has been reported. In this study, we used 98 F2 individuals from a cross between a self-compatible ecotype and an individual of the VrnA mapping population that were tested with markers for two candidate linkage groups 3 and 5 as well as markers for candidate regions at the S and Z locus. We were able to determine a tentative location of a SC locus and tested the possible interaction to other loci involved in SI and SC. This information will help to fine map the SC locus, and for marker-assisted selection.

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This article is published as Aguirre, Andrea Arias, Bruno Studer, Javier Do Canto, Ursula Frei, and Thomas Lübberstedt. "Mapping a new source of self-fertility in perennial ryegrass (Lolium perenne L.)." Plant breeding and biotechnology 1, no. 4 (2013): 385-395. doi: 10.9787/PBB.2013.1.4.385. Posted with permission.

Keywords
Self-fertility, Mapping, Perennial ryegrass, Self-incompatibility, Pollination tests, Segregation analysis
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