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GENETIC-VARIATION IN THE SPINNING GUM, EUCALYPTUS-PERRINIANA F-MUELL EX RODWAY

Version 2 2025-01-15, 01:04
Version 1 2023-05-26, 15:24
journal contribution
posted on 2025-01-15, 01:04 authored by Robert Wiltshire, James ReidJames Reid
Two Tasmanian populations of E. perriniana were examined to determine the extent of morphological variation between two gene pools that have been isolated for perhaps thousands of years. Surprisingly few differences were noted despite small population sizes, high levels of disturbance and high levels of hybridisation with E. rodwayi. When compared to mainland E. perriniana, large genotypic differences were noted: e.g. mainland E. perriniana seeds required stratification whereas Tasmanian seeds did not. The growth rates, leaf shape and colour also differed markedly but reproductive characters did not. These differences are possibly the products of differing selective pressures associated with altitudinal differences rather than random genetic drift or introgressive hybridisation. Developmental abnormalities were noted which seem to indicate that the distinctive connate form of the juvenile leaves is under relatively simple control mechanisms. © 1987, CSIRO. All rights reserved.

History

Publication title

Australian Journal of Botany

Volume

35

Issue

1

Article number

1

Number

1

Pagination

33-47:15

ISSN

0067-1924

Department/School

Biological Sciences

Publisher

CSIRO PUBLISHING

Publication status

  • Published

Rights statement

BM Potts. Copyright Copyright 1987 CSIRO

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