Fig. 4From: Application of melatonin-mediated modulation of drought tolerance by regulating photosynthetic efficiency, chloroplast ultrastructure, and endogenous hormones in maizeEffect of melatonin on leaf chloroplast ultrastructure at V-9 growth stage of maize under drought stress conditions. In figure of transmission electron micrographs of leaf chloroplast ultrastructure, the abbreviations indicate cell wall (CW), nucleus (n), mitochondria (m), chloroplast (CH), plastid globules (PB), and vacuole (V). The names of the treatments are the same as in Fig. 1Back to article page