Summary
Two populations of Potentilla glandulosa (Rosaceae) have strongly contrasting abilities to seasonally modify their phenotypic sensitivity to drought by low temperature-induced changes in leaf morphology. One population is native to an inland continental climate with unpredictable droughts occurring at any time during the year. The second population is native to a coastal mediterranean climate with a highly predictable annual cycle of winter rain and summer drought. In response to low temperatures in the autumn, the inland plants produce a compact rosette of small leaves and shed their large summer leaves, thereby reducing the total plant leaf area. The inland plants begin growth in the spring in the compact rosette phenotype and are much less sensitive to drought, maintaining higher values of stomatal conductance and leaf water potential, than when in the largeleaved summer phenotype. The coastal plants do not exhibit the low temperature-induced change in leaf morphology and are relatively sensitive to drought when grown at high or low temperatures. The F1 hybrids of a coastal x inland cross exhibit an intermediate response to low temperature and drought. In the F2 generation the inland parental class of individuals fully responding to low temperature segregates in a 1:63 ratio.
Similar content being viewed by others
References
Billings, W.D., Godfrey, P.J., Chabot, B.F., Bourque, D.P.: Metabolic acclimation to temperature in arctic and alpine ecotypes of Oxyria digyna. Arc. Alp. Res. 3, 277–289 (1971)
Bradshaw, A.D.: Environment and phenotypic plasticity. Brookhaven Symposia in Biol. 25, 75–94 (1974)
Chabot, B.F., Chabot, J.F., Billings, W.D.: Ribulose-1,5-diphosphate carboxylase activity in arctic and alpine populations of Oxyria digyna. Photosynthetica 6, 364–369 (1972)
Chapin, F.S.: Phosphate absorption capacity and acclimation potential in plants along a latitudinal gradient. Science 183, 521–523 (1974)
Clausen, J., Hiesey, W.M.: Experimental studies on the nature of species. IV. Genetic structure of ecological races. Carnegie Institution of Washington Publication No. 615, 1–312 (1958)
Clausen, J., Keck, D.D., Hiesey, W.M.: Experimental studies on the nature of species. I. Effect of varied environments on western North American plants. Carnegie Institution of Washington Publication No. 520, 1–452 (1940)
Cunningham, G.L., Strain, B.R.: An ecological significance of seasonal leaf variability in a desert shrub. Ecology 50, 400–408 (1969)
Kanemasu, E.T., Thurtell, G.W., Tanner, C.B.: Design, calibration and field use of a stomatal diffusion porometer. Plant Physiol. 44, 881–885 (1969)
Kappen, L., Oertli, J.J., Lange, O.L., Schulze, E.-D., Evenari, M., Buschbom, U.: Seasonal and diurnal courses of water relations of the arido-active plant Hammada scoparia in the Negev Desert. Oecologia (Berl.) 21, 175–192 (1975)
Knipling, E.B.: Measurement of leaf water potential by the dye method. Ecology 48, 1038–1041 (1967)
Kramer, P.J., Hellmers, H., Downs, R.J.: SEPEL: New phytotrons for environmental research. BioScience 20, 1201–1208 (1970)
Mooney, H.A., Shropshire, F.: Population variability in temperature-related photosynthetic acclimation. Oecol. Plantar. 2, 1–13 (1967)
Teeri, J.A., Peet, M.M.: Adaptation of malate dehydrogenase to environmental temperature variability in two populations of Potentilla glandulosa Lindl. Oecologia (Berl.) 34, 133–147 (1978)
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Teeri, J.A. Environmental and genetic control of phenotypic adaptation to drought in Potentilla glandulosa Lindl.. Oecologia 37, 29–39 (1978). https://doi.org/10.1007/BF00349989
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00349989