QTL analysis in introgression lines

(a) Six introgression lines (IL1 to IL6) formed by mating between a domesticated species and a wild species have different patterns of recombination in the region of two QTLs. The difference in trait expression between the trait in the domesticated species and each IL is given as a percentage. (b) Analysis of Brix 9-2-5  in 13 introgression lines identifies SNPs that alter CW invertase activity. The SNP at position 2878 has a substantial influence on CW invertase function(a) Six introgression lines (IL1 to IL6) formed by mating between a domesticated species and a wild species have different patterns of recombination in the region of two QTLs. The difference in trait expression between the trait in the domesticated species and each IL is given as a percentage. (b) Analysis of Brix 9-2-5  in 13 introgression lines identifies SNPs that alter CW invertase activity. The SNP at position 2878 has a substantial influence on CW invertase function

(a) Domesticated species Wild Trait difference (%) speaes from the Produce domesticated species introgression lines. IL1 ' .3 |L2 +15 |L3 +20 1L4 +3 |L5 -18 1L6 +2 -20 0 20 (b) CW invertase SNP activity (%) 100 200 300 Phenotypic introgression line effect 8 7 +3 10 «III-II +12 22 e—' ’ +22 23 WW +20 12 WW“ +16 17 m +16 1 ,, +11 4 , . +21 3 W ~ . ————- +13 13 M +12 6 - ~ ' ~ , , +5 29 —-—~——-——-——M +15 Brix 9-2-5