Contents of lipids and fatty acid composition in Norway spruce (Picea abies L. Karst.) seeds during long-term storage

Stoyhwo, A.; Janson, L.

Prace Instytutu Badawczego Lesnictwa, Seria A ( 874/877): 5-18

1999


Accession: 003078871

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Abstract
A small decrease in the fat content of seeds of Norway spruce was observed over extended storage at -2 degrees C - from an initial 36.6% of the dry mass to 33.5% and 32.5% after of 15 and 20 yr, respectively. Over the same periods germination capacity decreased from 98% for fresh collected seeds to 70% and 30%, respectively. Linoleic acid C18:2 content decreased from 51% of fatty acids in fresh seeds to 49.0% and 48.6%, respectively, after 15 and 20 yr of storage. In the seed oil, two polyunsaturated fatty acids Nl-1 (3.5%) and Nl-2 (24.7%) of unknown structure, were also found.