Abstract
The segregation of self-compatibility from L. temulentum was examined in backcross generations derived from hybrids between this species and the self-incompatible species, L. perenne and L. multiflorum, the latter being used as recurrent parents. Segregation patterns for self-compatibility were determined by percentage self seed set and by in-vitro self-pollination scores in the resulting backcross generations. Self-compatibility in L. temulentum is controlled in a gametophytic manner by a single gene mutation of either the Z locus or a locus tightly linked to it. Self-compatibility can be fixed in the homozygous form (i.e. 100 per cent pollen-tube growth on selfed stigmas) by selfing half compatible backcross plants. The S locus is still present in L. temulentum and functions when combined with a functional Z locus derived from either L. perenne or L. multiflorum. This has evolutionary significance for the relationship of the self-compatible and -incompatible Lolium species.
Similar content being viewed by others
Article PDF
References
Ames, O. 1939. Economic Annuals and Human Cultures. Harvard Botany Museum, Harvard, pp. 153.
Cornish, M A, Hayward, M D, and Lawrence, M J. 1980. Self-incompatibility in ryegrass. III. The joint segregation of S and PGI-2 Lolium perenne L. Heredity, 44, 55–62.
Fearon, C H, Hayward, M D, and Lawrence, M J. 1983. Self-incompatibility in ryegrasses. V. Genetic control, linkage and seed set in diploid Lolium multiflorum Lam. Heredity, 50, 35–45.
Hayman, D C. 1956. The genetical control of incompatibility in Phalaris caerulescens Desf. Aust J Biol Sci, 9, 321–331.
Hayward, M D, and McAdam, N J. 1976. Genetic control of isoenzyme phenotypes in L. perenne. Rep Welsh Pit Breed Stn, 28–29.
Hayward, M D, and McAdam, N J. 1977. Isozyme polymorphism as a measure of distinctiveness and stability in cultivars of Lolium perenne. Z Pflanzenzucht, 79, 59–68.
Jeffrey, E C. 1916. The Anatomy of Woody Plants. Chicago University Press, Chicago.
Jenkin, T J. 1935. Interspecific and intergeneric hybrids in herbage grasses. II. Lolium perenne × L. temulentum. J Genet, 31, 379–411.
Jenkin, T J. 1954. Interspecific and intergeneric hybrids in herbage grasses. VI.Lolium italicum ABr intercrossed with other Lolium types. J Genet, 52, 282–299.
Jones, R N, and Jenabzadeh, P. 1981. Variation in self-fertility, flowering time and inflorescence production in inbred Loliumperenne L. J Agric Sci, 96, 521–537.
Lalouette, J A. 1967. Growth of grass pollen when exhibited by the callose fluorochrome reaction. Grana Palynologica, 7, 601–603.
Larsen, J, Larsen, K, Lundqvist, A, and Østerbye, U. 1973. Complex self-incompatibility systems within the angio-sperms and the possibility of reconstructing a self-incompatibility system from different forms within a self-fertile species. Incompat Newsletter, 3, 79–80.
Lewis, E J, Humphreys, M W, and Caton, M P. 1980. Chromosome location of two isozyme loci in Lolium perenne using primary trisomies. Theoret Appl Genet, 57, 237–239.
Lundqvist, A. 1961. A rapid method for the analysis of incompatibility in grasses. Hereditas, 47, 705–707.
Lundqvist. 1975. Complex incompatibility systems in Angiosperms. Proc Roy Soc Lond Ser B, 188, 235–245.
Nitzsche, W. 1983. Inheritance of the mode of fertilization in Lolium spp. Z Pflanzenzuchtg, 90, 243–248.
Stebbins, G L. 1957. Self-fertilization and population variability in plants. Am Natural, 91, 337–354.
Thorogood, D, and Hayward, M D. 1991. The genetic control of self-compatibility in an inbred line of Lolium perenne L. Heredity, 67, 175–182.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Thorogood, D., Hayward, M. Self-compatibility in Lolium temulentum L: its genetic control and transfer into L. perenne L. and L. multiflorum Lam. Heredity 68, 71–78 (1992). https://doi.org/10.1038/hdy.1992.9
Received:
Issue Date:
DOI: https://doi.org/10.1038/hdy.1992.9
Keywords
This article is cited by
-
Fine mapping a self-fertility locus in perennial ryegrass
Theoretical and Applied Genetics (2018)
-
Overcoming self-incompatibility in grasses: a pathway to hybrid breeding
Theoretical and Applied Genetics (2016)
-
Prospects for Hybrid Breeding in Bioenergy Grasses
BioEnergy Research (2012)
-
Identification and mode of action of self-compatibility loci in Lolium perenne L.
Heredity (2005)
-
Self-incompatibility in ryegrass 12. Genotyping and mapping the S and Z loci of Lolium perenne L
Heredity (2002)