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Early height growth of Scots pine (Pinus sylvestris L.) progenies from Polish clonal seed orchards

100%

Chmura D. J., Giertych M., Rozkowski R.

Dendrobiology

2003

tom 49

Seed orchards are expected to produce geneticaly improved seeds while maintaining a sufficiently large genetic diversity. Field trials comparing open-pollinated Scots pine progeny from seed orchards and commercial seed stands were established at five climaticaly different sites in Poland. The paper presents first height measurements obtained on trees at age 4. Seedlots differed significantly, but there was no strong evidence of better performance of clonal seed orchards progeny over the progeny of production seed stands. There was no distinct geographical trend in the origin of the best growing seedlots, but populations from the northern part of country tend to perform better than south-eastern ones. Progeny of the local production seed stands at their native environment were not the best, except in one case. A strong site effect reflecting a fertility gradient of the planting sites was found.

Ograniczanie wyników

1 Dendrobiology

1 Chmura D. J.

1 Giertych M.

1 Rozkowski R.

1 2003

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Early height growth of Scots pine (Pinus sylvestris L.) progenies from Polish clonal seed orchards