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Forestry 1994 67(1):63-74; doi:10.1093/forestry/67.1.63
© 1994 by Institute of Chartered Foresters
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Monitoring the Output of a Hybrid Larch Seed Orchard Using Isozyme Markers

R. A. ENNOS1 and TANG QIAN2

1Institute of Ecology and Resource Management, University of Edinburgh Darwin Building, King's Buildings, Mayfield Road, Edinburgh EH9 3JU, Scotland
2The Chinese Academy of Forestry Beijing 100091, People's Republic of China

A method was developed for estimating the frequency of hybrids in the seed crop of a multiclonal hybrid larch seed orchard using isozyme genetic markers. The technique was used to monitor the output of a commercial hybrid larch seed orchard. Among the seeds collected from European larch clones, some 65 per cent were hybrid, compared with 19 per cent from Japanese larch clones. Unequal reproductive effort and differences in flowering time between the two parental species may account for the results. Possible application of these techniques for the certification of seed and planting stock are discussed.

Received 31 May 1993.
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