Es ist mal wieder Zeit für ein paar Quellen...sind nicht die besten, führen aber auf jeden Fall weiter.
I. Zur Entwicklung und Vitalität der Samen:
[1] John E. Kuser, Department of Horticulture and Forestry, Cook College, New Jersey Agricultural Experiment Station, Rutgers University, New Jersey: METASEQUOIA GLYPTOSTROBOIDES IN URBAN FORESTRY
[2] Zdeňka Procházková (2003): Tree seed testing in the Czech Republic. Forestry and Game Management Research Institute, Research Station Uherské Hradiště, 686 04 Kunovice, Czech Republic. In: Proceedings of the ISTA Forest Tree and Shrub Seed Committee Workshop, Prague - Průhonice, Czech Republic, October 20 – 22, 2003.
[3] D. George W. Edwards (2003): Kinetics of water absorption in fir seeds and some implications for tetrazolium tests and excising embryos. FTB Forest Tree Beginnings, Victoria, British Columbia, Canada. In: Proceedings of the ISTA Forest Tree and Shrub Seed Committee Workshop, Prague - Průhonice, Czech Republic, October 20 – 22, 2003.
[4] M. Gradečki, K. Poštenjak (2003): Germination of silver fir seeds (Abies alba Mill. ) from different seed stands in Croatia. Forest Research Institute, Jastrebarsko, Cvjetno naselje 41, 10450 Jastrebarsko, HR – Croatia. In: Proceedings of the ISTA Forest Tree and Shrub Seed Committee Workshop, Prague - Průhonice, Czech Republic, October 20 – 22, 2003.
abstracts:
"Average values of germination energy and germination capacity were low. Average values of germination rate and germination capacity were 14.4 %, and 23.4 %, respectively. Average share of empty seed was 58.4 %. Increased share of empty seed directly influences diminished seed germination. The percentage of sick and rotten seed has significant impact on diminished seed germination and it is 9.7 % on average, for all plots, so the protection of seed from pathogenic fungi has to be intensified."[5] Don Minore (1983): Western Redcedar. A Literature Review. Pacific Northwest Forest and Range Experiment Station. General Technical Report PNW-150.
[6] Dogra, Prem Dutt (1967): Seed sterility and disturbances in embryogeny in conifers with particular reference to seed testing and tree breeding in Pinaceae. Studia forestalia Suecica, ISSN 0039-3150 ; 45. Diss. Stockholm / Skogshögskolan. 97p.
[7] Kanak Sahai (2000): Late embryo mortality – A prime cause of seed sterility in some exotic pine species adapted in Kumaon Himalaya. Current Science, Vol 80, No 3.
[8] Sorensen, F.C. (1969): Embryonic genetic load in coastal Douglas-fir. American Naturalist 103:389-98.
[9] Kanak Sahai (2002): Quality analysis of seeds of Cupressus Linn. species for seed testing and plus tree selection. Dendrology. Vol. 47, Supplement: 101–104 (Eine sehr gelungene knappe Arbeit mit guten Zeichnungen.)
Gute Quellen-Sammlung bei Sorensen @ Forest Service Publications:
http://www.fs.fed.us/pnw/rmp/forest-genetics/publications/sorensen.shtml