Table 1.

Growth in length (mm) of short and long adventitious roots in aerated nutrient solution or stagnant deoxygenated agar nutrient solution

		Time after treatment (h)
		0	6	12	24	48	120
Short roots
Aerated	Mean	73	74	75	81	110	123
	s.e.	1	4	2	3	4	12
	n	9	5	3	5	11	9
Stagnant	Mean	73	72	74	80	93	107
	s.e.	1	2	1	2	3	2
	n	9	9	9	8	9	7
Long roots
Aerated	Mean	116	129	126	137	151	177
	s.e.	5	3	4	4	8	5
	n	5	6	8	7	5	8
Stagnant	Mean	116	121	117	123	125	133
	s.e.	5	4	3	3	4	6
	n	5	7	7	7	7	11

Short (65–90 mm) and long (105–130 mm) adventitious roots were used (lengths at commencement of treatment). Plants were raised for 3–4 weeks in aerated nutrient solution, prior to transfer to stagnant deoxygenated agar nutrient solution for 0, 6, 12, 24, 48 or 120 h. The samples in this table correspond to the roots in Fig. 5.