Table 1 - Effects of elicitor and copper sulfate on grindelic acid production in submerged cultures of Grindelia pulchella

Table 1. Growth response of G. pulchella explants on MS media and different plant growth regulator combinations. Concentrations are expressed in µM. Results come from three independent experiments of 40-60 explants in each one.

2,4-D	IBA	NAA	BA	K	Growth results
4.5	-	-	-	-	roots/shoots
2.2	-	-	-	-	N/d*
-	-	5.4	-	2.3	roots
-	-	21.5	-	2.3	calli
-	2.5	-	-	-	shoots
-	2.5	-	2.2	-	shoots
-	5.0	-	-	-	roots
-	5.0	-	2.2	-	calli
-	5.0	-	4.4	-	calli
-	10.0	-	2.2	-	calli
-	20.0	-	-	-	roots
-	20.0	-	2.2	-	friable calli
-	20.0	-	4.4	-	friable calli
-	20.0	-	9.0	-	friable calli
-	20.0	-	18.0	-	friable calli

*N/d: No development.