Zawartość lipidów i skład kwasów tłuszczowych w nasionach świerka pospolitego (Picea abies L. Karst.) przechowywanych dlugoterminowo

Autorzy

• Andrzej Stołyhwo Instytut Badawczy Leśnictwa
  Zaklad Genetyki i Fizjologii Drzew Lesnych
  Sekocin-Las, 05-900 Raszyn
• Lucjan Janson Instytut Bafdawczy Leśnictwa
  Zakład Genetyki i Fizjologii Drzew Leśnych ul. Bitwy Warszawskiej 1920 Roku nr 3, 00-973 Warszawa

Abstrakt

The decrease of fat contents in seeds of Norway spruce was observed when the time
of their storage in the temperature -2 0C extended. It was found that the fat content
in seeds has decreased from the initial 36.6% of the dry mass down to 35.5% and
32.5% in the case of 15 and 20 years storage period, respectively. At the same time
the germination capacity has decreased from 98% for fresh collected seeds to the
levels of 70% and 30% for seeds stored in cool place for 15 and 20 years. The
decrease of linoleic acid C18:2 content from 51% at the beginning to 49.0% and
48.6% was found in the composition of fatty acids after 15 and 20 years of seeds
storage. In spruce seed oil, two polyunsaturated fatty acids NI-1 (3.5%) and NI-2
(24.7%) of unknown structure, were also found.

Słowa kluczowe

• acids
• analysis
• lipids
• storage
• Picea abies (L.) Karst.
• Norway spruce
• seeds
• germination