Figure 9

Ethylene generation and senescence symptoms in UHb and WT Golden Promise plants. (a). In vivo ethylene generation in barley UHb plants and WT Golden Promise. Ethylene was quantified in whole intact UHb and wild type plants at 20–25% soil relative water content. Data are mean of four replicates + standard error. (b). Spad chlorophyll meter readings (SCMR) of barley UHb plants and WT Golden Promise. SCMR were assessed in the first leaf at 20–25% sRWC. Data are based on five replicates per genotype and treatment and three SCMR per leaf. White bar = watered controls (W); Black bars = plants exposed to drought treatment (D). **, *** indicate significant differences at P < 0.01, and 0.001 with respect to control plants.