Fig. 2.

Differential gene expression of inferior grains of rice subjected to moderate soil drying during grain filling. (A) Number of genes detected in each of the samples. (B) Numbers of genes up- and down-regulated and total number of differentially expressed genes (DEGs) in the comparisons between well-watered controls (CK) and moderate drying (MD) conditions at 12 d after anthesis (DAA), 18 DAA, and 24 DAA. (C) Venn diagram showing the DEGs in the three pairwise comparisons between CK and MD conditions at the three time-points during grain filling. (D) Principal component analysis (PCA) based on all the expressed genes. Three distinct groups are clustered based on the gene expression level of each sample.