Fig. 1

Morphological characteristics of the PGMS MT line CCRI9106 and its WT line CCRI040029. a Intact plants of MT (right) and WT (left). b Chl (a + b) and Car content of leaves in MT and WT (Student’s t-test, *P < 0.05, **P < 0.01). L1-L5, the first to the fifth leaf. c Flower and pollen phenotype of WT and MT. d Paraffin sections in virous development stages of WT and MT anthers. En, endothecium; ePG, empty pollen grain; Mc, mother cells; PG, pollen grain; Td, tetrad; T, tapetum. The red arrows point out the major differences of pollen grains between WT and MT. Bar = 100 μm