Summary
An analysis of the data from six families of full-sibs shows that one of the incompatibility genes in perennial ryegrass is linked in its inheritance to the gene, PGI-2, which codes for the enzyme phosphoglucoisomerase. In the light of this evidence, we define S as the gene that is linked to PGI-2. The best estimate of the frequency of recombination between PGI-2 and S is p̂ = 0·1538 ± 0·0252.
Similar content being viewed by others
Article PDF
References
Breese, E L, and Thomas, A C. 1977. Monitoring chromosome segregation in Lolium multiflorum × Lolium perenne amphiphloids. Rep Welsh Pl Breed Stn for 1976, 29–32.
Cornish, M A, Hayward, M D, and Lawrence, M J. 1979a. Self-incompatibility in ryegrass. I. Genetic control in diploid Lolium perenne L. Heredity (in the press).
Cornish, M A, Hayward, M D, and Lawrence, M J. 1979b. Self-incompatibility in ryegrass. II. The joint segregation of S and Z in Lolium perenne L. Heredity (in the press).
Hayward, M D, and Balls, T. 1978. Isoenzyme polymorphism in natural populations of Lolium perenne. Rep Welsh Pl Breed Stn for 1977, 43–45.
Hayward, M D, and McAdam, N J. 1977a. Isozyme polymorphism as a measure of distinctiveness and stability in cultivars of Lolium perenne. Z Pflanzenzuchtg, 79, 59–68.
Hayward, M D, and McAdam, N J. 1977b. Genetic control of isoenzyme phenotypes in L. perenne. Rep Welsh Pl Breed Stn for 1976, 28–29.
Lawrence, M J, Cornish, M A, and Hayward, M D. 1979. Simultaneous estimation of male and female linkage from a single intercross family. Heredity (in the press).
Mather, K. 1951. The Measurement of Linkage in Heredity. Methuen, London.
De Nettancourt, D. 1977. Incompatibility in Angiosperms. Springer-Verlag, Berlin.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Cornish, M., Hayward, M. & Lawrence, M. Self-incompatibility in ryegrass. Heredity 44, 55–62 (1980). https://doi.org/10.1038/hdy.1980.4
Received:
Issue Date:
DOI: https://doi.org/10.1038/hdy.1980.4
This article is cited by
-
Genotypic and phenotypic diversity of heat tolerance among and within perennial ryegrass (Lolium perenne L.)
Brazilian Journal of Botany (2022)
-
Identification of molecular markers linked with crown rust (Puccinia coronata f. sp. lolii) resistance in perennial ryegrass (Lolium perenne) using AFLP markers and a bulked segregant approach
Euphytica (2005)
-
Self-incompatibility in ryegrass 12. Genotyping and mapping the S and Z loci of Lolium perenne L
Heredity (2002)
-
A polymorphic duplicated locus for cytosolic PGI segregating in sheep’s fescue (Festuca ovina L.)
Heredity (1999)
-
Genetic markers and the selection of quantitative traits in forage grasses
Euphytica (1994)