and related parameters (Fig. 3) in TAM 112 under WD may be par- tially explained by elevated ABA (Fig. 6). ABA application has also been shown to increase carbohydrate accumulation and remobi- lization to the grain in wheat, rice, and barley (Seiler et al., 2011; Tang et al., 2009; Travaglia et al., 2007; Yang and Zhang, 2006). Thus, elevated ABA might cause a reduction in photosynthesis, but could also provide a means for maintaining grain yield.