Field performance and early test results of offspring from two Norway spruce seed orchards containing clones transferred to warmer climates
作者： Tore Skrøppa , Ketil Kohmann , Øystein Johnsen , Arne Steffenrem , Øyvind M Edvardsen
DOI: 10.1139/X06-253
关键词:
摘要: We present results from early tests and field trials of offspring two Norway spruce (Picea abies (L.) Karst.) seed orchards containing clones that have been transferred high altitudes to sea level northern southern latitudes. Seedlings seeds produced in the low-altitude orchard developed frost hardiness later at end growth season, flushed trials, grew taller than seedlings natural stands. They had lowest mortality rate frequency injuries trials. Similar were observed orchard. found no adverse effects changed rhythm. crops orchard, years with a warm cold summer, different annual rhythms. The are explained mainly by climatic conditions during reproductive phase. Seed same orc...
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