Response of Maize Seedlings to Cadmium Application after Different Time Intervals

Table 3

Correlation among growth and biochemical attributes of two maize (Zea mays L.) lines under different treatments of cadmium after different time intervals.

Attributes

SDW

RDW

LA

Chl. a

Chl. b

Car

RMP

MDA

H2O2

TAA

Proline

Anth.

SDW

1

RDW

0.908***

1

LA

0.938***

0.852***

1

Chl a

−0.450***

−0.410***

−0.390***

1

Chl b

0.037 ns

−0.031 ns

0.057 ns

0.748***

1

Car.

−0.259*

−0.265*

−0.213 ns

0.953***

0.913***

1

RMP

−0.506***

−0.465***

−0.531***

−0.873***

−0.702***

−0.854***

1

MDA

−0.300**

−0.306**

−0.298***

−0.886***

−0.853***

−0.931***

−0.862***

1

H2O2

−0.502***

−0.236**

−0.012 ns

−0.774***

−0.817***

−0.846***

−0.690***

0.855***

1

TAA

0.062 ns

0.094 ns

0.023 ns

−0.742***

−0.845***

−0.839***

−0.758***

0.863***

0.902***

1

Proline

−0.397***

−0.432***

−0.203 ns

−0.361***

−0.041 ns

0.203 ns

0.058 ns

−0.151 ns

−0.194 ns

−0.056 ns

1

Anth.

−0.490***

−0.602***

−0.329**

0.162 ns

−0.184 ns

0.016 ns

−0.044 ns

−0.042 ns

−0.100 ns

0.008 ns

0.786***

1

 ^{*,**,** *}: significant at 0.05, 0.01, and 0.001 levels, respectively; ns: nonsignificant.
SFW: shoot fresh weight; RDW: root dry weight; Chl. a: chlorophyll a; Chl. b: chlorophyll b; Car.: carotenoids; Anth.: anthocyanin.
MDA: malendialdehyde; RMP: relative membrane permeability; H2O2: hydrogen peroxide; TAA: total free amino acids.