comparison of the properties of seed orchard and stand seeds · 2005-05-09 · seed orchard-n /...

/ METSÄNTUTKIMUSLAITOSSKOGSFORSKNINGSINSTITUTETFINNISH FOREST RESEARCH INSTITUTEwww.metla.fi

Eira-Maija Savonen: seed size, germinationSeppo Ruotsalainen: field experiments

Continuation: the field experiment part

Comparison of the properties of seedorchard and stand seeds


Experiments are repeated in threeyears (2002-04)4 test sites (only

2 in the first year)

Field tests


Field tests: technique


Stand seed

South SO

North SOPunkaharjuJyväskylä

Parkano

Kannus

Solböle

Test sites and origin of the material


Seed orchard types

Seed orchard124 Suokanta

Seed orchard190 Metsä-Ihala


Test results


Plant percentage at the end of 1st growing season - all years and test sites

20

30

40

50

60

70

80

90

100

20 30 40 50 60 70 80 90 100

Germination, 14 days

Mea

n pl

ant-% Stand seed

South SO

North SO

r=0.806**


Plant percentage at the end of 2nd growing season -two years and all test sites

20

30

40

50

60

70

80

90

100

20 30 40 50 60 70 80 90 100

Germination, 14days

Mea

n pl

ant-% Stand seeds

Seed orchard-S

Seed orchard-N

r=0.855**


Scots pine sowing 2002, Punkaharju, development in plant percentage

0

10

20

30

40

50

60

70

1 2 3

Years

%

StandsSeed orchard-SSeed orchard-N


Scots pine sowing 2002, Parkano, development in plant percentage

0

10

20

30

40

50

60

70

1 2 3

Years

%

StandsSeed orchard-SSeed orchard-N


Scots pine sowing 2002, Punkaharju, height growth

0

50

100

150

200

250

300

350

1 2 3

Years

Heig

ht, m

m StandsSeed orchard-SSeed orchard-N


Scots pine sowing 2002, Parkano, height growth

0

20

40

60

80

100

120

1 2 3

Years

Hei

ght,

mm Stands

Seed orchard-SSeed orchard-N


All Stands Seedorchard-

S

Seedorchard-

N

KannusParkano

SolbölePunkaharju

05

1015

20

25

30

35

40

45

%

Scots pine sowing 2003, plant percentage in 2nd year


All Stands Seedorchard-

S

Seedorchard-

N

KannusParkano

PunkaharjuSolböle

05

10

1520

25

30

35

40

45

50

height, mm

Scots pine sowing 2003, height of 2nd year


Scots pine sowing 2003, Punkaharju, development in plant percentage

05

101520253035404550

1 2

Years

%

Stands

Seed orchard-S

Seed orchard-N

Scots pine sowing 2003, Parkano, development in plant percentage

05

1015202530354045

1 2

Years

%

Stands

Seed orchard-S

Seed orchard-N


Scots pine sowing 2002, Parkano, development in plant percentage for individual

seed lots

010203040506070

1 2 3Years

%


Preliminary conclusions:- no clear difference between seed orchard and stand

seeds in plant percentage

- great differences within each seed type in plantpercentage (influenced by germination)

- seed lots from seed orchards with northern originand low germination speed can have delayedgermination

- seed orchard seed (greater) produces greaterseedlings

comparison of the properties of seed orchard and stand seeds · 2005-05-09 · seed orchard-n /...

Documents