Tolerance to Cadmium of Agave lechuguilla (Agavaceae) Seeds and Seedlings from Sites Contaminated with Heavy Metals

Table 2

Seed germination ± standard error of Agave lechuguilla seeds from a contaminated site (Villa de la Paz, SLP) and from a noncontaminated site (Villa de Zaragoza, SLP) under eight cadmium concentrations. Different letters mean statistical differences between sites (𝑃<0.0001).

Treatment (mg/L Cd)	Seed germination (%)
	Villa de Zaragoza	Villa de la Paz
0	87±2.54^a	31±2.91^b
1	76±5.78^a	27±4.63^b
10	73±4.06^a	25±5.70^b
20	77±3.39^a	26±2.44^b
40	72±7.34^a	29±5.10^b
60	72±7.34^a	29±3.31^b
80	71±1.87^a	22±5.14^b
100	73±2.55^a	24±4.00^b