FIGURE 6
3.4 The soluble sugar content, starch content, andenzymes activities in grains
In the laboratory incubation experiment of Exp. 3, the soluble sugar content in both superior and inferior grains reduced with time and remained stable from the 30th day after pollination (DAP) to grain physiology maturity (Figure 7a). Similar soluble sugar content was observed among treatments at different stage in both superior and inferior grains with an exception of lower soluble sugar content in DHS treatment on the 10th DAP. For starch content, it showed an increasing trend in both superior grain and inferior grains with time. In stress treatments, starch content in grain was significantly lower compared with CK. On the 40thDAP, it was reduced by 12% in DS, 12% in HS, and 9% in DHS for superior grains.