Summary
Multilocus allozyme markers, which were present in background stands but not in two seed orchards, enabled estimation of gene flow into two seed orchards of loblolly pine. Estimates averaged 36% in two orchards over three years. When pollen pool frequencies in the background stands were used rather than gene frequencies in the non-orchard trees, the estimates averaged 60%. In one year, trees in the row on the edge of one orchard received significantly more pollen from background stands. Estimates of gene flow between the two 2-ha orchards average 10%. Implications of the observed levels of gene flow are discussed in terms of population genetics and seed orchard management.
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References
Adams WT, Joly RJ (1980a) Genetics of allozyme variants in loblolly pine (Pinus taeda L.). J Hered 71:33–40
Adams WT, Joly RJ (1980b) Linkage relationships among twelve allozyme loci in loblolly pine. J Hered 71:199–202
Bridgewater FE, Trew IF (1982) Supplemental mass pollination. In: Franklin EC (ed) Pollen management handbook. USDA Agric Handbook 587
Colwell RN (1951) The use of radioactive isotopes in determining spore distribution patterns. Am J Bot 38:511–513
Endler JA (1973) Gene flow and population differentiation. Science 179:243–250
Ehrlich PR, Raven PH (1969) Differentiation of populations. Science 165:1228–1232
Franklin EC (1969) Inbreeding depression in metrical traits of loblolly pine. NC State Univ For Res Techn Rep 40
Friedman ST (1982) Genetic efficiency in two loblolly pine (Pinus taeda L.) seed orchards. PhD Thesis, University of New Hampshire, Durham
Friedman ST, Adams WT(1981) Genetic efficiency in loblolly pine seed orchards. In: Proc 16th South Forest Tree Improv Conf, pp 213–224
Jonsson A, Ekberg I, Ericksson G (1976) Flowering in a seed orchard of Pinus sylvestris. L. Stud For Sues No 135
Lanner RM (1966) Needed: a new approach to the study of pollen dispersion. Silvae Genet 15:50–52
Mayr E (1970) Populations, species and evolution. Belknap Press, Cambridge
McElwee RL (1970) Radioactive tracer techniques for pine pollen flight studies and an analysis of short-range pollen behavior. PhD Thesis, North Carolina State University, Raleigh
Smith DB, Adams WT (1983) Measuring pollen contamination in clonal seed orchards with the aid of genetic markers. In: Proc 17th South Forest Tree Improv Conf, pp 64–73
Snedecor GW, Cochran WG (1967) Statistical methods. Iowa State University Press, Ames Iowa
Sniezko RA (1981) Genetic and economic consequences of pollen contamination in seed orchards. In: Proc 16th South Forest Tree Improv Conf, pp 225–233
Snyder EB (1972) Glossary for forest tree improvement workers. South For Exp Stn, New Orleans
Squillace AE (1967) Effectiveness of 400 foot isolation around a slash pine seed orchard. J For 65:823–824
Squillace AE, Long EM (1982) Proportion of pollen from nonorchard sources. In: Franklin EC (ed) Pollen management handbook. USDA Agric Handb 587
Strand L (1957) Pollen dispersal. Silvae Genet 6:129–136
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Communicated by P. M. A. Tigerstedt
Scientific Contribution No. 1285 from the New Hampshire Agricultural Experiment Station. This work was part of McIntire-Stennis Project 11 ‘Allozyme studies of coniferous forest tree populations’
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Friedman, S.T., Adams, W.T. Estimation of gene flow into two seed orchards of loblolly pine (Pinus taeda L.). Theoret. Appl. Genetics 69, 609–615 (1985). https://doi.org/10.1007/BF00251112
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DOI: https://doi.org/10.1007/BF00251112