Table 2.

Pearson correlation among the plant growth, physiological and biochemical parameters, and Cd concentration in soil and plant tissues.

Variables	PH	SDW	RDW	GW	Pro	Fat	Fib	Ash	G-Fe	G-Zn	Cd-So	Cd-Sh	Cd-R	Cd-G	Ci	An	ET	SPAD
PH	1
SDW	0.987	1
RDW	0.989	0.97	1
GW	0.958	0.973	0.941	1
Pro	0.975	0.988	0.968	0.982	1
Fat	0.988	0.994	0.983	0.977	0.989	1
Fib	0.949	0.965	0.924	0.919	0.939	0.953	1
Ash	0.933	0.948	0.92	0.897	0.906	0.942	0.979	1
G-Fe	0.93	0.959	0.926	0.989	0.971	0.966	0.9	0.896	1
G-Zn	0.946	0.959	0.929	0.888	0.914	0.944	0.976	0.989	0.879	1
Cd-So	−0.909	−0.941	−0.898	−0.961	−0.927	−0.94	−0.876	−0.904	−0.978	−0.891	1
Cd-Sh	−0.83	−0.841	−0.818	−0.782	−0.766	−0.838	−0.866	−0.946	−0.796	−0.928	0.865	1
Cd-R	−0.781	−0.807	−0.77	−0.725	−0.725	−0.788	−0.839	−0.923	−0.75	−0.92	0.831	0.98	1
Cd-G	−0.812	−0.83	−0.802	−0.739	−0.749	−0.809	−0.857	−0.932	−0.755	−0.939	0.83	0.974	0.996	1
Ci	0.849	0.87	0.837	0.749	0.809	0.835	0.899	0.919	0.749	0.957	−0.777	−0.87	−0.915	−0.941	1
An	0.966	0.979	0.948	0.952	0.971	0.978	0.988	0.957	0.932	0.952	−0.89	−0.825	−0.78	−0.799	0.849	1
ET	0.955	0.955	0.944	0.917	0.935	0.951	0.989	0.977	0.9	0.968	−0.873	−0.865	−0.834	−0.856	0.89	0.976	1
SPAD	0.818	0.84	0.791	0.781	0.793	0.828	0.95	0.95	0.771	0.922	−0.759	−0.872	−0.854	−0.857	0.863	0.905	0.939	1

Values in bold shows significant correlation (p = 0.05) among corresponding plant growth, physiological and biochemical parameters, and pea tissues Cd contents under Cd-contaminated soil conditions. PH: plant height; SDW: shoot dry weight; RDW: root dry weight; GW: grains weight; Pro: protein; Fat: fat; Fib: fiber; Ash: ash; G-Fe: Fe concentration in grains; G-Zn: Zn concentration in grains; Cd-So: Cd concentration in soil; Cd-Sh: Cd concentration in shoot; Cd-R: Cd concentration in roots; Cd-G: Cd concentration in grains; Ci: internal carbon dioxide concentration; An: net assimilation rate; ET: evapotranspiration rate; and SPAD: chlorophyll (SPAD) contents.