Fig. 7

Photosynthetic expression of hybrids relative to their parents changed during the T1 and T2 periods. A A schematic diagram of the expression pattern of photosynthesis. B-D Heat maps of the key genes in the photosynthetic enrichment pathways related to LHC, PSII, and PSI, respectively, in the two periods. Red and blue represent upregulation and downregulation, respectively. The figure shows the expression changes in the hybrids (AM, CM, HM, and HW) relative to the corresponding MPV genes in the two periods. T1: 21 DAS; T2: 24 DAS; MPV, mid-parent value; LHC, light-harvesting complex; PSII, photosystem II; PSI, photosystem I