Calculate Stress tolerance index (STI) suggested by Fernandez (1992)

The genotype with high STI values will be tolerant to drought

Usage

st_index(Yp, Ys)

Arguments

Yp

Yield under control condition

Ys

Yield under stress condition

Value

STI

References

Fernandez, G. C. (1993). Effective selection criteria for assessing plant stress tolerance.

Examples

st_index(500, 350)
#> [1] 0.7