annual shoot development dynamics of hybrid aspen: results
TRANSCRIPT
Annual shoot development dynamics of hybrid aspen:
results of
2010, 2011.
Mārtiņš [email protected]
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Progeny trial No. 620 with 15 hybrid aspen clones, represented
by 25 ramets with initial spacing 3 x 3 m, has been established
in former agricultural land in central part of Latvia. Inventory of
phenology and measurements have been carried out in 4th and
5th growing season, starting from middle of April, with an
interval of 1 week on average.
Materials and methodINVESTMENT IN YOUR FUTURE
UPOV 1981.
Materials and methodINVESTMENT IN YOUR FUTURE
Differences between leaf prosperity was 12 day in phase 2 in 2010
But in 2011. only 2 days.
Differences between leaf prosperity was 4 days in phase 5 in 2010
But in 2011. 7 days.
Leaf prosperity phases INVESTMENT IN YOUR FUTURE
Development of tree height increment with different bud burst phenology pattern 2010
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150
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Tree
hei
ght,
cm
Date
early average late
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Development of tree height increment with different bud burst phenology pattern 2011
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550Tr
ee h
eig
ht,
cm
Date
Early Average Late
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Intensity of height growth per day, mm *10, of clones with different bud burst and mean temperature oC 2010.
0,0
5,0
10,0
15,0
20,0
25,0
He
igh
t in
crim
en
t m
m*1
0M
ea
n te
mp
era
ture
oC
Date
Early Average Late Mean temperature
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0,00
5,00
10,00
15,00
20,00
25,00
20.05. 02.06. 08.06. 15.06. 22.06. 29.06. 06.07. 13.07. 20.07. 03.08. 11.08. 17.08. 25.08. 02.09. 09.09. 16.09. 22.09. 10.10.
Hei
gh
t in
crem
ent
in d
ay*1
0M
ean
tem
per
atu
re o
C
Date
Early average Late Tvidperj
Intensity of height growth per day, mm *10, of clones with different bud burst and mean temperature oC 2011INVESTMENT IN YOUR FUTURE
Total length of height increment andlength of used vegetation period forparticular hybrid aspen clones 2010
y = -0,753x + 191,23R² = 0,3925
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He
igh
t in
cre
me
nt,
cm
Use
d v
eg
eta
tio
n p
eri
od
, da
ys
Clone No.
H.incr. Veg.p. Linear (Veg.p.)
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204
188183
174 170 166 164 162 160 159149 148 146 142
136
181 181 181 180 182 181 181 182 182 181 180 180 180 178 178
0
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25 13 22 10 A'95 21 4 16 24 26 30 16'95 30'95 23 28
Hei
gh
t in
crem
ent,
cmU
sed
veg
etat
ive
per
iod
, day
s
Clone No.
Hincr11 KopāVegper.
Total length of height increment andlength of used vegetation period forparticular hybrid aspen clones 2011INVESTMENT IN YOUR FUTURE
Conclusions
�Hybrid aspen clones have 2 height increment culminations – end of May and middle of July;
�Height increment have strong correlation this average temperature of day;
�Clone who have longer used vegetation period have biggerheight increment;
�Growing intensity have bigger influence to total height increment of middle of July in 2010, but in 2011 midle of June.
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Nr. 2009/0200/1DP/1.1.1.2.0/09/APIA/VIAA/146
Thank You for attention!
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