Fig. 7

Major allelic combinations and phenotypes of the four grain shape genes. Alternative alleles: GS3^allele1, GW5^allele1, GL7^allele1, GS5^allele1, GS3^allele2, GS5^allele3, GS5^allele4; according to the grain shape breeding goal of Simiao varieties, the alleles ( GS3^allele3, GW5^allele2, GL7^allele2, GS5^allele2) that produce long or/and slender grain shapes were defined as "favorable alleles". Letters above the bars are ranked by Duncan’s test at P < 0.05; different letters indicate significant differences; n, the number of strains (varieties)