Effects of Drought Stress on theGro

Effects of Drought Stress on theGrowth of Broomcorn MilletThe phenotype of the two cultivars grown in the controltreatment without drought stress significantly differed (Table 1and Supplementary Table S2). For example, HQR had moreinternodes, wider diameter culms, and shorter panicles thanYL10 (Supplementary Table S2). However, drought stress hada marked effect on plant phenotype (Supplementary Table S2).The drought-exposed plants were shorter than the control plants.The panicle of the former was also shorter than that of the latter.Furthermore, the dry weight of panicles and grains of the formerwas lower than that of the latter, but the number of internodesand culm diameter of the drought-exposed plants were higherthan those of the control plants (Table 1 and SupplementaryTable S2). Two-way ANOVA revealed that only the length ofpanicle was significantly affected by the interactive effect ofdrought stress and cultivar (Table 1). The effect of droughtstress was greater on YL10, which had shorter panicles withlower dry mass than HQR (Supplementary Figure S2). Droughtstress stimulated significantly the diameter of the culm of HQRcompared with that of the control, whereas the diameter of theculm of YL10 was not (Supplementary Table S2).