Arabidopsis thaliana (Thale Cress)/Catalogs

Growth stages for Arabidopsis under laboratory conditions

Stage	Approx. Days	Description
0.0		Seed germination
0.1	3.0	(on plates) Seed imbibition
0.5	4.3	(on plates) Radicle emerges from seed coat
0.7	5.5	(on plates) Hypocotyl and cotyledon emerge from seed coat
1		Rosette growth
1.0	6.0	(on plates) Cotyledons fully open
1.02	10.3	(on plates) 12.5 2 rosette leaves are greater than 1 mm in length
1.03	14.4	(on plates) 15.9 3 rosette leaves are greater than 1 mm in length
1.04	16.5	4 rosette leaves are greater than 1mm in length
1.05	17.7	5 rosette leaves are greater than 1mm
1.06	18.4	6 rosette leaves are greater than 1mm
1.07	19.4	7 rosette leaves are greater than 1mm
1.08	20.0	8 rosette leaves are greater than 1mm
1.09	21.1	9 rosette leaves are greater than 1mm
1.10	21.6	10 rosette leaves are greater than 1mm
1.11	22.2	11 rosette leaves are greater than 1mm
1.12	23.3	12 rosette leaves are greater than 1mm
1.13	24.8	13 rosette leaves are greater than 1mm
1.14	25.5	14 rosette leaves are greater than 1mm
3		Rosette Growth
3.20	18.9	Rosette is 20% of final size
3.50	24.0	Rosette is 50% final size
3.70	27.4	Rosette is 70% final size
3.90	29.3	Rosette growth is complete
5		Inflorescence emergence
5.10	26.0	First flower buds are visible in the rosette, plant has not yet bolted
6		Flower production
6.00	31.8	First flower is open, petals are at 90 degree angle to the pistil
6.10	35.9	10% flowers to be produced are open
6.30	40.1	30% flowers to be produced are open
6.50	43.5	50 % flowers to be produced are open
6.90	49.4	Flowering complete, flowers are no longer produced.
8		Silique or fruit ripening. Seed pods become brown and then shatter.
8.00	48.0	First silique or seed pod shatters.
9		Whole Plant Senescence begins. Plant starts to lose, pigment becoming brownish.
9.70		Senescense complete