Journal Article

The after-effects of reproductive environment in shortleaf pine

R.C. Schmidtling and V. Hipkins

in Forestry: An International Journal of Forest Research

Published on behalf of Institute of Chartered Foresters

Volume 77, issue 4, pages 287-295
Published in print January 2004 | ISSN: 0015-752X
Published online January 2004 | e-ISSN: 1464-3626 | DOI: https://dx.doi.org/10.1093/forestry/77.4.287
The after-effects of reproductive environment in shortleaf pine

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  • Conservation of the Environment (Environmental Science)
  • Environmental Sustainability
  • Plant Sciences and Forestry

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Thirteen identical controlled crosses were made among 22 shortleaf pine (Pinus echinata Mill.) clones growing in two contrasting reproductive environments: a seed orchard in central Arkansas, USA (34.6°N) and a clone bank in south Mississippi (30.5°N). The resulting seedlings from both reproductive environments were planted at both locations where the seed was produced. After 4 years in the field (5 years from seed), trees from seed produced in the two environments differed significantly in height. The reproductive environment × family interaction was also significant, however, indicating that the effect depended upon the genetic background of the parent trees. By age 9 years, differences were no longer statistically significant. Allozymes were assayed in seed produced in the two reproductive environments. Chi-squared tests of heterogeneity of segregation ratios for polymorphic loci showed significant differences between the two environments for many cross/loci combinations. Although the pattern of differences was not obviously linked to differences in growth, gametophytic selection is suggested as a possible explanation for the after-effects.

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Subjects: Conservation of the Environment (Environmental Science) ; Environmental Sustainability ; Plant Sciences and Forestry

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