Abstract
The amount of outcrossing was estimated using seven enzyme loci assayed in seven populations of rye (Secale cereale L.). Single-locus outcrossing values fluctuated widely from locus to locus in each population. The weighted mean single-locus estimates ranged from 0·716 to 0·946, and multilocus estimates ranged from 0·701 to 0·910. The analysis showed that self-pollination occurred in the rye populations, and, as a result of selfing, populations contained homozygotes in excess of random mating expectations at the seedling stage of development. Low plant density, which causes low pollen density during fertilization, seems to weaken the self-incompatibility system; at low plant density, the outcrossing estimate was significantly lower than was obtained at high plant density.
Similar content being viewed by others
Article PDF
References
Allard, R W, and Workman, P L. 1963. Population studies in predominantly self-pollinated species IV. Seasonal fluctuations in estimated values of genetic parameters in lima bean populations. Evolution, 17, 470–480.
Allard, R W, Kahler, A L, and Clegg, M T. 1975. Isozymes in plant population genetics. In Markert, C. L. (ed.) Isozymes IV. Academic Press, New York.
Bailey, R J, Rees, H, and Adena, M A. 1978. Interchange heterozygosity and selection in rye. Heredity, 41, 1–12.
Bijlsma, R, Allard, R W, and Kahler, A L. 1986. Non- random mating in an open-pollinated maize population. Genetics, 112, 669–680.
Brown, A H D. 1979. Enzyme polymorphism in plant populations. Theor Pop Biol, 15, 1–42.
Brown, A H D, Zohary, D, and Nevo, E. 1978. Outcrossing rates and heterozygosity in natural populations of Hordeum spontaneum Koch, in Israel. Heredity, 41, 49–62.
Clegg, M T. 1980. Measuring plant mating systems. Bioscience, 30, 814–818.
Clegg, M T, and Allard, R W. 1973. Viability versus fecundity selection in the slender wild oat, A. barbata L. Science, 181, 667–668.
Clegg, M T, Kahler, A L, and Allard, R W. 1978. Estimation of life cycle components of selection in an experimental plant population. Genetics, 89, 765–792.
Cheliak, W M, Dancik, B P, Morgan, K, Yeh, F C H, and Strobeck, C. 1985. Temporal variation of the mating system in a natural population of jack pine. Genetics, 109, 569–584.
Farris, M A, and Mitton, J B. 1984. Population density, outcrossing rate and hétérozygote superiority in ponderosa pine. Evolution, 38, 1151–1154.
Kahler, A L, Clegg, M T, and Allard, R W. 1975. Evolutionary changes in the mating system of an experimental population of barley (Hordeum vulgare L.). Proc Natl Acad Sci, 72, 943–946.
Kahler, A L, Gardner, C O, and Allard, R W. 1984. Nonrandom mating in experimental populations of maize. Crop Sci, 24, 350–354.
Lundqvist, A. 1956. Self-incompatibility in rye I. Genetic control in the diploid. Hereditas, 42, 293–348.
Marshall, D F, and Abbott, R J. 1982. Polymorphism for outcrossing frequency at the ray floret locus in Senecio vulgaris L. I. Evidence. Heredity, 48, 227–235.
Marshall, D F, and Abbott, R J. 1984. Polymorphism for outcrossing frequency at the ray floret locus in Senecio vulgaris L. II. Confirmation. Heredity, 52, 331–336.
Neale, D B, and Adams, W T. 1985. Allozyme and mating system variation in balsam fir (Abies balsamea) across a continuous elevational transect. Can J Bot, 63, 2448–2453.
Nei, M. 1975. Molecular Population Genetics and Evolution. North Holland Publishing Company, Oxford.
Nei, M. 1978. Estimation of average heterozygosity and genetic distance from a small number of individuals. Genetics, 89, 583–590.
Pérez De La Vega, M, and Allard, R W. 1984. Mating system and genetic polymorphism in populations of Secale cereale and S. vavilovii. Can J Genet Cytol, 26, 308–317.
Pollack, L M, Gardner, C O, Kahler, A L, and Thomas-Compton, M. 1984. Further analysis of the mating system in two mass selected populations of maize. Crop Sci, 24, 793–796.
Rao, C R. 1973. Linear Statistical Inference and Its Application. John Wiley, New York.
Rebordinos, L, and Pérez de La Vega, M. 1988. Gene duplication in the structural gene for a glutamate oxalo-acetate zone (GOTI) in Secale. J Hered in press.
Ritland, K. 1983. Estimation of mating system. In Tanksley, S. D. and Orton, T. J. (eds.) Isozymes in Plant Genetics and Breeding, Part A, Elsevier Science Publishers, Amsterdam.
Ritland, K, and El-Kassaby, Y A. 1985. The nature of inbreeding in a seed orchard of Douglas-fir as shown by an efficient multilocus model. Theor Appl Genet, 71, 375–384.
Schlegel, R, Melz, G, and Mettin, D. 1986. Rye cytology, cytogenetics and genetics, Current status. Theor Appl Genet, 72, 721–734.
Schmidt-Stohn, G, Wricke, G, and Weber, W E. 1986. Estimation of selfing rates in self-fertile rye plants using isozyme marker loci. Z Pflanzenzuchtung, 96, 181–184.
Schoen, D J, and Clegg, M T. 1986. Monte Carlo studies of plant mating system estimation models: the one-pollen parent and mixed mating models. Genetics, 112, 927–945.
Shaw, D V, and Allard, R W. 1982. Estimation of outcrossing rates in Douglas-fir using isozyme markers. Theor Appl Genet, 62, 113–120.
Shaw, D V, Kahler, A L, and Allard, R W. 1981. A multilocus estimator of mating system parameters in plant populations. Proc Natl Acad 5c, 78, 1298–1302.
Trang, Q S, Wricke, G, and Weber, W E. 1982. Number of alleles at the incompatibility loci in Secale céréale L. Theor Appl Genet, 63, 245–248.
Vaquero, F. 1987. Ph.D. Thesis, Universidad Complutense de Madrid.
Vences, F J, Vaquero, F, and Pérez De La Vega, M. 1987. Phylogenetic relationships in Secale: An isozymatic study. Plant Syst Evol, 157, 33–47.
Wricke, G. 1979. Degree of self-fertilization under free pollination in rye populations containing a self-fertility gene. Z. Pflanzenzuchtung, 82, 281–285.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Vaquero, F., Vences, F., García, P. et al. Mating system in rye: variability in relation to the population and plant density. Heredity 62, 17–26 (1989). https://doi.org/10.1038/hdy.1989.3
Received:
Issue Date:
DOI: https://doi.org/10.1038/hdy.1989.3
This article is cited by
-
Biological characteristics of an invasive south African species
Biological Invasions (2005)
-
Variation in flowering phenology and selfing rate across a contact zone between diploid and tetraploid Arrhenatherum elatius (Poaceae)
Heredity (1997)
-
Genetic resources of Centrosema spp.: genetic changes associated to the handling of an active collection
Genetic Resources and Crop Evolution (1996)
-
Non-random mating in a Secale cereale L. (rye) population
Heredity (1994)
-
Population genetics of colonizing success of weedy rye in Northern California
Theoretical and Applied Genetics (1992)