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Tree Seed Centre test types

Last updated on May 4, 2023

This table displays the test type and conditions by species. Seedlots are tested periodically and several tests may be performed at or around the same time. For Germination tests, the type of test indicates the type of preparation done on the seed. Preparation methods are ranked in terms of the germination result.

The Test Type code represents the type of test that was performed against a Seedlot. The following table provides a description of each test code.

Not sure what a species code represents? Look it up in the Species code index.

Test types and conditions

Germ. Code

Species Code

Soak (hrs)

Surface dry

Strat. days

Temp. (°C)

Strat. redry

Strat. days

Temp. (°C)

Test days

Germinator temp. (°C)1
GH1 Lw 24   21 2      

21 2

 30/20

G10

Fd, S, Lw

24

y

21

2

n

 

­

21

30­/20
G12 S 24 y 42 2 n     21 30/20

G20

Pl, Py

24

y

28

2

n

 

­

21

30/­20

G31

Hw, Hm

24

y

28

2

n

 

­

28

20/­20

G32

Bg

48

y

28

2

n

 

­

28

30­/20

G34

Ba, Bl, Bp 

48

n

28

2

n

 

 

28

25/15

G44

Ba, Bl, Bp

48

n

56

2

n

 

­

28

25­/15

G52

Yc

48

n

28

20

n

56

2

28

30­/20

G55

Pw

336

n

98

2

n

 

­

28

30­/20

G57

Yc

72

n

28

20

n

77

2

28

30/20
G58 Pa 72 n 56 20 n 112 2 28 30/20

G64

Ba, Bl, Bp

48

n

28

2

y

56

2

28

25­/15

D1

At, Cw, Dr, Ep

0

­

­

­

n

­

­

21

30/­20

W1

Pl, S

24

y

0

­

n

­

­

21

30­/20

SA

all

Species average germination

SE

all

Seedlot estimated germination

PUR

all

Percentage pure seed by weight

MC

all

Moisture content expressed as a percentage

SPG

all

Number of seeds per gram weight

XRY

all

X-ray test

CAL

all

Caloscypha fungal assay test

FUS

all

Fusarium sp. fungal assay test

SIR

all

Sirococcus fungal assay test

1. 8 hours at higher temperature, 16 hours at lower temperature.

2. With 2.5 hrs post-strat 3% H2O2