Table 1.

Different modified media (based on MS medium) tested for improving hazel callus growth.

Treatment	Medium pH = 6.0	Phytagel (3 g l−1)	Spirulina powder (1000 g l−1)	Glutamine (50 mg l−1)	Proline (50 mg l−1)	Alanine (50 mg l−1)	Phenylalanine (50 mg l−1)	Cysteine (50 mg l−1)	Methionine (50 mg l−1)	casein hydrolysate (1000 g l−1)	Glycine (50 mg l−l)	FeEDDHA (96 mg l−1)
M0	—	—	—	—	—	—	—	—	—	—	—	—
M1	*	*	—	—	—	—	—	—	—	—	—	—
M2	*	*	*	—	—	—	—	—	—	—	—	—
M3	*	*	*	*	—	—	—	—	—	—	—	—
M4	*	*	*	*	*	—	—	—	—	—	—	—
M5	*	*	*	*	*	*	—	—	—	—	—	—
M6	*	*	*	*	*	*	*	—	—	—	—	—
M7	*	*	*	*	*	*	*	*	—	—	—	—
M8	*	*	*	*	*	*	*	*	*	—	—	—
M9	*	*	*	*	*	*	*	*	*	*	—	—
M10	*	*	*	—	—	—	—	—	—	*	—	—
M11	*	*	*	—	—	—	—	—	—	*	*	—
M12	*	*	*	—	—	—	—	—	—	*	—	*
M13	*	*	*	*	*	*	*	*	*	*	—	*
M14	*	*	*	—	—	—	—	—	—	*	*	*

Volume of medium in all treatments was 70 ml.