Increased accumulation of the 10-kDa δ-zein in transgenic RNAi seeds. A, Comparison of the 10-kDa δ-zein level in non-transgenic control, βRNAi, γRNAi and βγRNAi in Hi-II background. B, linkage analysis of the 10-kDa δ-zein level and RNAis in seeds from the cross of B73 x γRNAi/-; βRNAi/-. C, linkage analysis of the 10-kDa δ- zein level and RNAis in seeds from the cross of Mo17 x γRNAi/-; βRNAi/-. Kernel genotypes are marked with different symbols. M, protein markers from top to bottom being 37, 25, 20, 15 and 10 kDa. The size of each zein band is indicated with numbers in the “kDa” column.