Fig. 3
The structure and transcription level of the different promoters. a The variation sites where the different deletions occur; “∇” indicates the deletions. b Different types of promoters; “-” indicates a 16-bp deletion. The percentage in brackets located after the alleles indicates the frequency of the alleles in the corresponding promoters. c Relative expression level between Promoter-1 and Promoter-4 in young leave and inflorescences. “**” indicates a significance difference (P < 0.01). d Comparison of the number of spikelets per panicle between Promoter-1 and Promoter-4. “**” indicates a significance difference (P < 0.01)