Skógræktarritið - 15.12.1993, Síða 37

Tafla 2.
Aætlaöar framkvæmdir við lerkikynbætur 1992-2015
KYNBÆTUR
1992-1995
velja 100 klóna
1993-1998
ágræðsla
hraðaður vöxtur
blómgun
AFKVÆMATILRAUNIR
1995-2000
stýrð víxlfrjóvgun
1996-2001
500 afkvæmahópar
gróðursettir
viðhalda klónum
í klónasafni
2005-2010 -
meta tilraunir
I
2010-2015
önnur kynslóð
2010-2015
velja 100 klóna
FRÆFRAMLEIÐSLA
1996-1998
50 frjósamir klónar
valdir - fjölgun
2000
fræframleiðsla hefst
2005-2010
henda 20-30 klónum
20-30 eftir
HEIMILDIR
ARNO, S.F. 1992. The distinctive
distribution of alpine larch (Larix
lyallii): Clear patterns and enigmas.
Proc. Ecology and Management of
Larix Forests. 5.-9. október 1992.
Whitefish, Montana, USA.
ARNÓR SNORRASON 1987. Lerki á
íslandi. Ársrit Skógræktarfélags
íslands 1987: 3-22.
ARNÓR SNORRASON og SIGURÐUR
BLÖNDAL 1990. Skógur og skógabú-
skapur í Arkhangelskhéraði. Ársrit
Skógræktarfélags íslands 1990:
99-115.
BARNER, H„ og H. CHRISTENSEN
1960. The formation of pollen, the
pollination mechanism, and the
determination of the most favorable
time for controlled pollinations in
Larix. Silv. Genet. 9: 1-11.
BONNET-MASIMBERT, M. 1982.
Effect of growth regulators, girdling
and mulching on flowering of young
European and lapanese larches
underfield conditions. Can. J. For.
Res. 12: 270-279.
CLARK, J.R. 1983. Age-related
changes in trees. lournal of
Arboriculture 9: 201-205.
FRANKLIN, E.C. (Ed.) 1981. Pollen
Management Handbook. USDAAg.
Hbk. no. 581.
FOWLER, D.P. 1986. Strategies for
genetic improvement of important
tree species in the Maritimes. Inf.
Rep. M-X-156. Canadian Forestry
Service-Maritimes. 30 bls.
GREENWOOD, M.S., C.H. O'GWYNN,
og P.G. WALLACE 1979. Management
of an indoor potted loblolly pine
breeding orchard. Proc. 15 SFTiC:
94-98.
GREENWOOD, M.S., C.A. HOPPER,
og K.W. HUTCHISON 1989.
Maturation in Larch: 1. Effect of age
on shoot growth, foliar characteris-
tics and DNA methylation. Plant
Physiol. 90: 406-412.
HANOVER, J.W. 1980. Control of tree
growth. Bioscience 30: 756-762.
IOHNSEN, 0. 1989. Phenotypic
changes in progenies of northern
clones of Picea abies (L.) Karst. grown
in a southern seed orchard. Scand.).
For. Res. 4: 317-330.
LAMBETH, C.C. 1980. luvenile-mat-
ure correlations in Pinaceae and im-
SKÓGRÆKTARRITIÐ 1993
35