Fig. 1

OsDPE2 can rescue panicle mutant phenotype of lax1-6 in Dular. a Panicle phenotype of lax1-6 × Dular F2 plants with the lax1-6 mutant genotype divided into osdpe2-d, osdpe2-Dd, and osdpe2-D, scale bar = 4 cm. b Location of OsDPE2 via mapping. OsDPE2 was initially mapped using lax1-6 genotype plants of lax1-6 × Dular F2 population. OsDPE2 was mapped on chromosome 7 between RM2201 and RM1301 via bulked separate analysis. A total of 1600 F2 individuals screened for the lax1-6 mutant genotype were used to fine-map OsDPE2. Finally, OsDPE2 was located on chromosome 7 between Markers S5 and with only one candidate gene LOC_07g46790. c Parental comparative sequencing test for Dular, ZH11, and lax1-6. USR; Upstream region. d The number of secondary panicle branches in OsDPE2-Com, lax1-6, and wild-type. Scale bar of panicle = 4 cm; plant = 20 cm. e–g Yield traits of WT, lax1-6, and OsDPE2-Com. n = 60 biologically independent samples. Bars represent mean ± SE; Tukey's multiple comparisons test. Different letters represent statistically significant differences between data groups