Table 2 Stress tolerance indices used for the evaluation of barley genotypes to drought tolerance
From: Mitigation of water stress by compost and arginine application and its impacts on barley production
Stress tolerance indices | Equation | References |
|---|---|---|
Stress susceptibility index | SSI = 1–(Ys/Yp)/1–(Ŷs/Ŷp) | Fischer and Maurer (1978) |
Mean productivity | MP = (Ys + Yp)/2 | Rosielle and Hambline (1981) |
Stress tolerance | TOL = Yp–Ys | Rosielle and Hambline (1981) |
Geometric mean productivity | GMP = (Yp * Ys)1/2 | Fernandez (1992) |
Stress tolerance index | STI = (Yp*Ys)/(Ŷp)2 | Fernandez (1992) |
Yield index | YI = Ys/Ŷs | Gavuzzi et al. (1997) |
Yield stability index | YSI = Ys/Yp | Bouslama and Schapaugh (1984) |
Harmonic means | HM = 2(Ys * Yp)/(Ys + Yp) | Kristin et al. (1997) |