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Genetic variation in the spinning gum, Eucalyptus perriniana F. Muell. ex Rodway
journal contribution
posted on 2023-05-26, 15:24 authored by Robert WiltshireRobert Wiltshire, James ReidJames ReidTwo 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.
History
Publication title
Australian Journal of BotanyVolume
35Article number
1Number
1Pagination
33-47ISSN
0067-1924Department/School
Plant SciencePublication status
- Published
Rights statement
BM Potts. Copyright Copyright 1987 CSIRORepository Status
- Restricted