Figure 1.

Effects of wheat cultivar and successive 1-day transfers to controlled environment cabinets at 20/15 (◦) and 35/30°C (•) day/night temperature (16 h day) on grain yield per pot from all stems (A,B) or only mainstems (C,D). Panels (E,F) give the growth stage distributions of the mainstems at the time of transfer in to the cabinets (boxes are limited by 25 and 75%, whiskers by 10 and 90%; points are outliers beyond 10 and 90%, and the line within the box is the median where appropriate). S.E.D. (358 d.f.) in (A,C) is for comparing temperatures within day and cultivar for both cultivars. Arrows in (E,F) denote the assumed timing of growth stage (GS) 65 (Zadoks et al., 1974). Dashed lines in (A,B) are the mean yields from eight pots per cultivar left outside.