Table 4.

Correlation coefficients (r) among different physiological traits under water stress condition given in rainout shelters

	Yield	Tap root length	Lateral root length	Root/shoot weight	Canopy temperature	SPAD value	Specific leaf weight	Photosynthesis ratio	Fv/Fm	Wax content
Tap root length	0.85**
Lateral root length	0.58*	0.82**
Root/shoot weight	0.95**	0.89**	0.67**
Canopy temperature	− 0.88**	− 0.85**	− 0.61*	− 0.90**
SPAD value	0.88**	0.66**	0.45*	0.84**	− 0.85**
Specific leaf weight	0.90**	0.82**	0.66**	0.93**	− 0.86**	0.88**
Photosynthesis	0.93**	0.80**	0.59*	0.91**	− 0.88**	0.90**	0.92**
Fv/Fm ratio	0.90**	0.75**	0.42	0.87**	− 0.86**	0.90**	0.90**	0.85**
Wax content	0.81**	0.77**	0.55*	0.81**	− 0.83**	0.82**	0.81**	0.83**	0.81**

*,** Significant at P = 0.05 and P = 0.01, respectively