Handbook of Plant and Crop Physiology

68 CHONG ET AL.

TABLE 2

Continued

Medium temperature (

C)

Plant

Posttransplant

Days to

Light or

Species

type

Germination

(night)

germinate

dark

Pretreatment

Remarks

None if fresh. Chill 0

C 7 days

Sow then refrigerate

3 wk

21

20–40 14–21 7–21 10–14 14–30

15

21–35

Anemone

spp.

AnemoneRanunculaceae

Angelica archangelica

Wild parsnipApiaceae

Antennaria

spp.

PussytoesAsteraceae

Anthemis

spp.

Golden marguerite,ChamomileAsteraceae

Antirrhinum majus

SnapdragonScrophulariaceae

Aquilegia

spp.

ColumbineRanunculaceae

Arabis

spp.

Rock cressBrassicaceae

Arctotis stoechadifolia

African daisyAsteraceae

P B P P

HHP

P P A

18–20 21–25 22–24

20

18–21 20–24

21

15–20

10–15 10–15

(^15) 8–14 8–12 10 10
10–15
L
D or L
L L L
D or L
Rub seed with dry sand to
remove cottony covering.
Use fresh seed. Viability
decreases rapidly with time,i.e., seeds may notgerminate after 6 months ofstorage.
Seed is very fine, cover
lightly.
Sow 6–8 wk before scheduled
outdoor planting. Suscept-ible to damping-off disease.Use a presow fungicidedrench. Keep medium moistat all times duringgermination. Lowertemperature aftergermination. Plants self-sow easily.
Reduce night temp of medium
by 7–8
C during
germination.
Sow 6–8 wk before scheduled
outdoor planting. Use freshseed. Viability decreasesquickly.