Table 6.

Influence of ABA, PEG, AC and maltose concentration on plantlet rooting in P. massoniana.

Medium		Factors				Rooting rate (%)
number		ABA (mg/L)	PEG (g/L)	AC (g/L)	Maltose (g/L)
1		1	110	0.5	20	0
2		1	130	1.0	25	0
3		1	150	1.5	30	0
4		2	110	0.5	30	35.0
5		2	130	1.0	20	34.6
6		2	150	1.5	25	31.3
7		3	110	0.5	25	38.1
8		3	130	1.0	30	50.0
9		3	150	1.5	20	55.2
	yj1	0	73.1	81.3	89.8
	yj2	100.9	84.6	90.2	69.4
	yj3	143.3	86.5	72.7	85
	${\overline{y}}_{j1}$	0	24.4	27.1	29.9
	${\overline{y}}_{j2}$	33.6	28.2	30.1	23.1
	${\overline{y}}_{j3}$	47.8	28.8	24.2	51.7
	Rj	47.8	4.4	5.9	28.6
	Primary and secondary factors			ABA>Maltose>AC>PEG
	Optimal composition			ABA3+PEG3+AC2+Maltose3

ABA, abscisic acid; PEG, polyethylene glycol 8000; AC, activated carbon. y_jk (k=1, 2, 3) is the sum of test results with the same level of k in the j_th column of the table; ${\overline{y}}_{jk}$ is the mean value of the test results with the same level of k in the j_th column of the table; R_j is the range of ${\overline{y}}_{jk}$ . R_j=max( ${\overline{y}}_{jk}$ )- min( ${\overline{y}}_{jk}$ ).