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Partitioning and distribution of RAPD variation in a forest tree species, Eucalyptus globulus (Myrtaceae)

Citation

Nesbitt, KA and Potts, BM and Vaillancourt, RE and West, AK and Reid, JB, Partitioning and distribution of RAPD variation in a forest tree species, Eucalyptus globulus (Myrtaceae), Heredity, 74, (6) pp. 628-637. ISSN 0018-067X (1995) [Refereed Article]

DOI: doi:10.1038/hdy.1995.86

Abstract

Eucalyptus globulus is an important species for pulpwood production in many countries. The pattern and partitioning of variation is important baseline knowledge for tree breeding. Currently the species is divided into four subspecies: globulus, bicostata, pseudoglobulus and maidenii. Random Amplified Polymorphic DNA (RAPD) markers were used to analyse variation in 173 representatives of 37 natural populations of E. globulus: 31 localities of ssp. globulus (148 individuals), two localities each of ssp. bicostata (nine individuals), ssp. maidenii (ten individuals) and ssp. pseudoglobulus (six individuals). Ten 10-mer primers amplified a total of 162 scorable bands, of which 149 (91.9 per cent) were polymorphic, amova analysis of a Euclidean distance matrix based on presence/absence of polymorphic bands found most variation within localities, but significant differences between localities and regions. Principal components analysis (PCA) identified a major latitudinal cline in RAPD phenotype that differentiated southern Tasmanian localities from other ssp. globulus localities on mainland Australia. Many localities previously identified as intermediate between subspecies globulus and other subspecies in morphology were not intermediate in RAPD phenotype. In some cases regions which showed marked differentiation between localities in capsule and juvenile leaf morphology showed little RAPD differentiation between localities. RAPDs also provided new insights into the affinities of outlying localities. Although RAPD technology has not yet been applied to many forest tree species, patterns of variation were similar to those found in other outcrossing species studied using both RAPDs and other molecular markers. © 1995 The Genetical Society of Great Britain.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Evolutionary Biology
Research Field:Plant Systematics and Taxonomy
Objective Division:Plant Production and Plant Primary Products
Objective Group:Other Plant Production and Plant Primary Products
Objective Field:Plant Production and Plant Primary Products not elsewhere classified
Author:Nesbitt, KA (Dr Katherine Nesbitt)
Author:Potts, BM (Professor Brad Potts)
Author:Vaillancourt, RE (Professor Rene Vaillancourt)
Author:West, AK (Professor Adrian West)
Author:Reid, JB (Professor Jim Reid)
ID Code:5468
Year Published:1995
Web of Science® Times Cited:119
Deposited By:Biochemistry
Deposited On:1995-08-01
Last Modified:2010-11-08
Downloads:0

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