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Maternal inheritance of the chloroplast genome in Eucalyptus globulus and interspecific hybrids

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McKinnon, GE and Vaillancourt, RE and Tilyard, P and Potts, BM (2001) Maternal inheritance of the chloroplast genome in Eucalyptus globulus and interspecific hybrids. Genome, 44. pp. 831-835. ISSN 0831-2796

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Abstract

The utility of chloroplast DNA (cpDNA) in Eucalyptus, either as a molecular marker for genetic studies or as a potential vehicle for genetic manipulation, is based on knowledge of its mode of inheritance. Chloroplast inheritance in angiosperms can vary among and within species, and anomalous inheritance has been reported in some interspecific-hybrid combinations. In Eucalyptus, abnormalities of pollen-tube growth occur in a number of interspecific-hybrid combinations, and this might increase the likelihood of anomalous chloroplast transmission. We used a rapid PCR technique to determine chloroplast heritability in 425 progeny of Eucalyptus, comprising 194 progeny of the premier pulpwood species E. globulus and 231 interspecific hybrids between E. globulus and E. nitens (F1, F2, and backcrosses). At this sampling intensity, no pollen-mediated transmission of cpDNA was found in any of the 40 families tested. The results are discussed with reference to chloroplast engineering and the use of cpDNA as a seed-specific marker in phylogeographic studies of Eucalyptus.

Item Type: Article
Keywords: organelle, plastids, uniparental, maternal inheritance, interspecific hybrids
Journal or Publication Title: Genome
Page Range: pp. 831-835
ISSN: 0831-2796
Identification Number - DOI: 10.1139/gen-44-5-831
Additional Information: BM Potts.
Date Deposited: 15 Sep 2008 03:44
Last Modified: 18 Nov 2014 03:49
URI: http://eprints.utas.edu.au/id/eprint/7378
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