Figure 1.

Drought stress experiment in Woodland CA, 2012. WW (a) and DRT (b) plants at 10 days after drought initiation on June 18, 2012 at 18:00 when the high daily temperature was 40°C. DRT plants showed severe leaf wilting. Overnight DRT plants recovered from stress (c) June 19, 2012 at 10:30 when the low nightly temperature was 16°C. Representative ear images (d) without and with silk at the R1 stage (WW) and DRT ear images (e) with intact silk sampled at the same time as WW ears. Scale bars are 5 cm