Table 6.

Variance analysis of melanin content in the fruiting body of Inonotus hispidus.

Source	Sum of Squares	Df	Mean Square	F	Significance
Carbon source	0.802	2	0.401	0.280	<0.05 *
Nitrogen source	4.542	2	2.271	1.583	<0.05 *
Solid-liqui ratio	0.096	2	0.048	0.033	<0.05 *
pH	6.036	2	3.018	2.104	<0.05 *
Error	11.48	8

* p < 0.05 means statistical significance.