Fig. 3
Adaptation indices of 1st and 5th generation clones of Sitobion avenae from three areas. Xad > 0, Xad = 0, and Xad < 0 means better, equal, and worse performances, respectively, for S. avenae clones under the original water level (e.g., well-watered for moist area clones), compared with those under alternative water levels (e.g., intermediately or severely stressed for moist area clones)