Table 2.

Relations between the drought resistance index (DRI) and various agronomic factors measured either under fully irrigated conditions (control) or under terminal drought stress (stress) [Adapted from Bidinger et al. (1987b)].

DRI versus:	1981	1982
MID-SEASON STRESS
Control flowering	0.06	0.08
Control yield	0.06	0.06
Stress yield	0.67***	0.58***
Stress/control yield	0.47***	0.46***
TERMINAL STRESS
Control flowering	0.00	−0.05
Control yield	0.05	0.05
Stress yield	0.55***	0.72***
Stress/control yield	0.55***	0.61***

Stress/control represents the ratio of the yields under each respective treatment. ^*P < 0.05; ^**P < 0.01; and

^***P < 0.0001.