Table 2.

Plackett–Burman design matrix and observed PGR production by Pleurotus eryngii

Run	Independent variables (X)a															Responses (mg/L)
	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	GA3	ABA	IAA
1	3	3	3	3	0	0.3	0	0.3	0.1	0	0	1	25	4	100	594.50	104.62	17.49
2	3	3	3	0	0.3	0	0.3	0.3	0	0	0.1	0	25	4	200	4406.83	433.00	53.21
3	3	3	0	3	0	0.3	0.3	0	0	0.1	0	0	25	7	200	3191.17	389.27	33.28
4	3	0	3	0	0.3	0.3	0	0	0.1	0	0	0	35	7	200	15.83	16.36	2.54
5	0	3	0	3	0.3	0	0	0.3	0	0	0	1	35	7	200	3327.00	344.32	29.74
6	3	0	3	3	0	0	0.3	0	0	0	0.1	1	35	7	100	2609.50	259.62	32.37
7	0	3	3	0	0	0.3	0	0	0	0.1	0.1	1	35	4	200	1582.00	167.27	20.16
8	3	3	0	0	0.3	0	0	0	0.1	0.1	0.1	1	25	7	100	6904.33	741.67	51.29
9	3	0	0	3	0	0	0	0.3	0.1	0.1	0.1	0	35	4	200	2891.17	258.56	22.52
10	0	0	3	0	0	0	0.3	0.3	0.1	0.1	0	1	25	7	200	391.17	44.55	3.56
11	0	3	0	0	0	0.3	0.3	0.3	0.1	0	0.1	0	35	7	100	316.17	29.85	1.82
12	3	0	0	0	0.3	0.3	0.3	0.3	0	0.1	0	1	35	4	100	1562.00	145.23	10.62
13	0	0	0	3	0.3	0.3	0.3	0	0.1	0	0.1	1	25	4	200	4349.50	469.39	28.57
14	0	0	3	3	0.3	0.3	0	0.3	0	0.1	0.1	0	25	7	100	4362.00	533.26	38.01
15	0	3	3	3	0.3	0	0.3	0	0.1	0.1	0	0	35	4	100	2471.17	222.58	12.74
16	0	0	0	0	0	0	0	0	0	0	0	0	25	4	100	0.00	0.00	0.00

^aCarbon source (%): X₁ glucose, X₂ lactose, X₃ sucrose, X₄ fructose; nitrogen source (%): X₅ NaNO₃, X₆ NH₄NO₃, X₇ yeast extract, X₈ tryptone; mineral source (%): X₉ FeSO₄, X₁₀ MgSO₄, X₁₁ KH₂PO₄, others; X₁₂ thiamine (mg/L), X₁₃ temperature (°C), X₁₄ pH, X₁₅ agitation (rpm)