Assessment of Cowpea (Vigna unguiculata (L.) Walp.) Mutant Lines for Drought Tolerance

Table 4

Correlation between drought tolerance indices and seed yield under nonstressed and water deficient stressed conditions.

			PM	TOL	SSI	STI
	1
	−0.0242	1
PM	0.662	0.7333	1
TOL	0.6817	−0.748	−0.0972	1
SSI	0.5428	−0.8146	−0.2416	0.9566	1
STI	0.4908	0.8474	0.9691	−0.2943	−0.4035	1

MP: mean productivity; TOL: stress tolerance, SSI: Stress Susceptibility Index, STI: Stress Tolerance Index; : yield in nonstress condition; and : yield in stress condition. Significant at 5%.