... higher levels of cytokinin
ribosides in combination with lowered chlorophyll levels when
compared to fertilized trees from the same forest stand [21].
Table III. Description of spruce seedlings ... artificial
increase of auxin on the root level can induce changes of the
cytokinin content in the shoot.
In discussing the elevated content of cytokinin ribosides in
shoots of se...
... declining spruce
(Picea abies [L. ] Karsten). Plant and Soil, 150: 303–306.
D L. , KŪ J., Jƀ M., V ’ J. (2007): Mineral
nutrition in relation to the Norway spruce forest decline ... manifested
there by homogeneous yellowing of needles (chloro-
sis) and overall diminished vitality of aff ected trees. In
total 19 localities were selected in Loučná nad...
... 1229–1235.
SILVEIRA V., FLOH E.I.S., HANDRO W., GUERRA M.P.,
2004. Effect of plant growth regulators on the cellular
growth and levels of intracellular proteins, starch and
polyamines in embryogenic ... 209–214.
KONG L. , ATTREE S.M., FOWKE L. C., 1998. Effects of poly-
ethylene glycol and methylglyoxal bis(guanylhydrazone)
on endogenous polyamine levels and somatic embryo
matu...
... Malaise trap is a
passive, non-powered and continuously operating
tent-like trap. Its height is 2 m and collecting surface
is approximately 6 m
2
. Collecting sheets are black
and a covering ... Chrysopa perla and Hemerobius humulinus
were very abundant in both localities. Species
Chrysoperla carnea s .l. was abundant only in these
localities. Species Nineta flava, Nineta pal...
... spreading new spe-
cies of bark beetles.Regarding the distribution of
bark beetles and their ability to attack and kill also
living spruce trees the following several species are
economically ... beetle
species preferring dominant and co-dominant trees
to subordinate ones (P. chalcographus, I. amitinus),
and also species attacking particularly dominant
trees (Hylurgops pallia...
... formation and E2, released during intracellular freez-
ing, were recorded on 1 year old needles of potted seedlings of P. c a -
nariensis during controlled freezing treatments (cooling and thawing
rates: ... resistance of expanding current-year
needles of the Canary Island pine and subalpine evergreen
timberline conifers of continental Europe suggest that frost
hardening during sprout...
... halepensis Mill., Silvae Genet. 32 (1983) 4–9.
[19] Gandullo J.M., Ecología de los pinares españoles. III. Pinus
halepensis Mill., Ministerio de Agricultura, Instituto Nacional de
Investigaciones ... M., Loisel R., Réflexions sur le dynamisme
actuel de la régéneration naturelle du pin d’Alep (Pinus halepen-
sis Mill.) dans les pinèdes incendiéés en Provence calcaire (de 1973
à 1979), Ecologia...
... growth and flowering in a certain advance. This
allows to program cultural operations like scion-collection or
controlled pollinations based on automatically registered
meteorological data, reducing ... del Pino Piñonero (Pinus pinea L. ) (II) Valladolid, 2000,
pp. 269–278.
[21] Granier C., Tardieu F., Spatial and Temporal Analyses of
Expansion and Cell Cycle in Sunflower Leaves, P...
...
in
the
chilled
Casentino
seedlings) .
This
suggests
that
in
the
Casentino
seedlings
LD
also
played
a
role
in
removing
dormancy
and/ or
initiating
growth.
The
findings
of
experiment ...
the
wholly
unchilled
seedlings
in
the
green-
house.
Since
in
the
Aspromonte
seedlings
the
dependency
on
chilling
to
break
dor-
mancy
was
almost
total,
insuffic...
...
Prescoller-Tiefenthaler,
1992;
Helmisaari,
1992;
Saur et al,
1992).
Litterfall
and
return
of
nutrients
to
the
soil
The
amounts
of
yearly
litterfall
for
leaf
litter
and
total
litter
(leaves ...
levels
resulted
from
the
high
calcium
content
in
woody
tissues,
especially
with
the
development
of
cell
walls
during
lignification.
The
high
ni-
trogen
level...