Table 3.

Pearson correlation coefficients among years of yield and of high heritability variables under low irrigation.

Variable	Pearson correlation coefficient
GW	0.20**
SW	0.33***
DH	0.47***
GLAU	0.26***
PH	0.30***
Δ	0.22†
YI	0.21**
YS	NS

GW, weight of grains (g); SW, seed weight (g); DH, days from sowing to heading; GLAU, glaucousness (visual scale); PH, plant height (cm); Δ, ¹³C isotopic discrimination (‰); YI, maximum yield under irrigation (irrigation year 2); YS, yield in more stressed environment (rainfed year 1).

^***p ≤ 0.001;

^**p ≤ 0.01;

^*p ≤ 0.05;

^†p ≤ 0.10; NS, not significant (n = 185 except Δ with n = 52).