Root Growth and Enzymes Related to the Lignification of Maize Seedlings Exposed to the Allelochemical L-DOPA

Table 1

Changes in root length, root fresh and dry weights of maize seedlings treated with L-DOPA for 24 h.

L-DOPA (mM)	Root length (cm)	%	Fresh weight (g)	%	Dry weight (g)	%
0	3.38±0.032		2.15±0.052		0.148±0.001
0.1	3.25±0.187^ns		2.06±0.147^ns		0.145±0.004^ns
0.5	2.98±0.140^ns		1.96±0.020^ns		0.138±0.002^ns
1.0	2.47±0.069^∗	26.9	1.89±0.083^∗	11.1	0.134±0.003^∗	9.5
2.0	1.59±0.061^∗	52.9	1.68±0.044^∗	25.6	0.124±0.004^∗	16.32

Means (𝑁 = 5 ± SE) significantly smaller than the experiment control (Dunnett’s multiple comparison test) are marked*. ns: not significant at 0.05 level. The symbol % represents inhibition of statistically significant means when compared to control (0 mM).