Springer Nature is making SARS-CoV-2 and COVID-19 research free. View research | View latest news | Sign up for updates

A comparative study of floral and electrophoretic variation with life history variation in Limnanthes alba (Limnanthaceae)

  • 44 Accesses

  • 14 Citations

Summary

Plants derived from ten representative Limnanthes alba populations in Northern California, grown in a common environment, showed significant among-population genetic variation of certain floral and life history characters. Variation of these two sets of characters also correlated with the geographic distribution of populations, suggesting the influence either of common ancestry of neighboring populations, or of gradients of natural selection. In contrast, allozyme variation at eleven polymorphic loci showed little pattern. This suggests, if allozyme variants are assumed to accurately measure co-ancestry and each character set is assumed to give adequate and similar statistical power, that selection may have predominated over certain neutral processes during the evolution of some floral and life history characters.

Life history characters, being closely tied to fitness, are particularly relevant to the postulated selection gradient. Studies of three representative populations in nature revealed significant differences in the sizes of dormant seed banks and several reproductive characters. These differences correlated with some field measures of soil and biotic variables, and were compared with certain predictions from reproductive strategy models in an attempt to identify any agents of selection. Alternative sets of life history characters were discernable corresponding to varieties identified on the basis of floral morphology, but these sets did not match those predicted the by r and k selection dichotomy; instead alternative selection regimes that may also favor some “bethedging” adaptations are postulated, although we emphasize our measures of habitat and climatic factors are too preliminary to clearly distinguish selective environmental factors.

This is a preview of subscription content, log in to check access.

References

  1. Brown CR, Hauptli H, Jain SK (1979) Variation in Limnanthes alba: a biosystematic survey of germ plasm resources. Econ Bot 33:267–274

  2. Campbell RK, Sorensen FC (1978) Effect of test environment on expression of clines and on delimitation of seed zones in Douglas-fir. Theor Appl Genet 51:233–246

  3. Cohen J (1966) Optimizing reproduction in a randomly varying environment. J Theor Bio 16:10–14

  4. Dixon WJ, Brown MB (eds) (1979) BMDP-79 Biomedical Computer Programs, P Series. Univ of Calif Berkeley

  5. Endler J (1977) Geographic Variation, Speciation, and Clines. Princeton University Press, Princeton, NJ

  6. Evritt B (1978) Graphical Techniques for Multivariate Data. Heinemann Educational Books, London

  7. Gadgil M, Solbrig OT (1972) The concept of r and K selection: evidence from wild flowers and some theoretical considerations. Amer Nat 106:14–31

  8. Gottlieb LD (1977) Electrophoretic evidence and plant systematics. Ann Miss Bot Gard 64:161–180

  9. Grime PJ (1979) Plant Strategies and Vegetational Processes. Wiley, New York

  10. Holland RF, Jain SK (1981) Insular biogeography of vernal pools in the Central Valley of California. Amer Nat 117:24–37

  11. Jain SK (1978) Breeding system in Limnanthes alba: several alternative measures. Amer J Bot 65:272–275

  12. Kaplan R (1983) Temporal heterogeneity of vernal pools in relation to amphibian ecology. Proc 2nd Vernal Pool Symposium, Davis, Calif (in press)

  13. Leverich WJ, Levin DA (1979) Age-specific survivorship and reproduction in Phlox drummondii. Amer Nat 113:881–902

  14. Lewontin RC, Krakauer J (1973) Distribution of gene frequency as a test of the theory of selective neutrality of polymorphisms. Genetics 74:175–195

  15. Mason CT (1952) A systematic study of the genus Limnanthes. Univ Calif Pub Bot 25:455–512

  16. McNeill CI, Jain SK (1983) Genetic differentiation studies and phylogenetic inference in the plant genus Limnanthes (Section Inflexae) Theor Appl Genetics 66:257–269

  17. Morrison DF (1967) Multivariate Statistical Methods. McGraw-Hill, New York

  18. Nei M (1973) The theory and estimation of genetic distance. In: Morton NE (ed) Genetic Structure of Populations. Unv Press, Hawaii

  19. Nei M (1975) Molecular Population Genetic and Evolution. North-Holland Publishing Company, Amsterdam

  20. Ritland K (1983) The joint evolution of seed dormancy and flowering time in annual plants living in variable environments. Theor Pop Biol 24:213–243

  21. Stearns S (1976) Life history tactics: a review of the ideas. Quart Rev Biol 51:3–47

Download references

Author information

Correspondence to Kermit Ritland.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Ritland, K., Jain, S. A comparative study of floral and electrophoretic variation with life history variation in Limnanthes alba (Limnanthaceae). Oecologia 63, 243–251 (1984). https://doi.org/10.1007/BF00379884

Download citation

Keywords

  • Alba
  • Seed Bank
  • Dormant Seed
  • Common Ancestry
  • Floral Morphology