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Genetic variation in the juvenile leaf morphology of Eucalyptus globulus Labill. ssp globulus
Citation
Potts, BM and Jordan, GJ, Genetic variation in the juvenile leaf morphology of Eucalyptus globulus Labill. ssp globulus, Forest Genetics, 1, (2) pp. 81-95. ISSN 1335-048X (1994) [Refereed Article]
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Copyright Statement
Copyright 1994 Arbora Publishers
Official URL: http://www.tuzvo.sk/files/fg/volumes/1994/FG01-2_0...
Abstract
The patterns of genetic variation in the length and shape of juvenile leaves of Eucalyptus globulus ssp
globulus are described. Significant additive genetic variation occurred within populations for all traits. The
individual narrow-sense heritabilities estimated for lamina length (h2= 0.37) and two leaf shape traits (relative
lamina width 0.34 and degree of basal lobing 0.29) were significantly greater than the estimate for the
position of the widest point of the lamina (0.19). Significant genetic differences also occur between
populations in both leaf length and shape with the strongest differentiation occurring in leaf length. There
were strong intra- and interpopulation genetic correlations amongst most of the leaf traits. Height and volume
at two years of age were genetically independent of leaf length, but within populations, faster growth was
genetically correlated with increased basal lobing and a shift of the widest point closer to the leaf base. The
intra- and interpopulation genetic correlations were markedly different for some pairs of traits. Leaf length
was genetically independent of the height of transition from the juvenile to the adult leaf form within
populations, yet genetic differences between populations were highly correlated. Growth was more highly
genetically correlated with different facets of leaf shape within populations than between populations. It is
argued that correlated selection is the most likely cause of correlated genetic variation between populations
when traits are genetically independent within populations.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | Eucalyplus globulus, leaf morphology, genetic variation, heritability, genetic correlations |
| Research Division: | Biological Sciences |
| Research Group: | Genetics |
| Research Field: | Population, Ecological and Evolutionary Genetics |
| Objective Division: | Plant Production and Plant Primary Products |
| Objective Group: | Forestry |
| Objective Field: | Native Forests |
| UTAS Author: | Potts, BM (Professor Brad Potts) |
| UTAS Author: | Jordan, GJ (Professor Greg Jordan) |
| ID Code: | 86567 |
| Year Published: | 1994 |
| Deposited By: | Plant Science |
| Deposited On: | 2013-09-24 |
| Last Modified: | 2013-10-01 |
| Downloads: | 248 View Download Statistics |
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