Figure 4

Quantitative trait loci for S. galapagense RILs. (a) Two QTLs for leaf damage (red line) were found, one on chromosome 6 and one on chromosome 8. A larval mass QTL (black line) was found on chromosome 6. A 95% confidence level was used. (b) Representation of the common region between susceptible IL 6-2 and the QTLs on chromosome 6. The dashed line contains the larvae mass QTL on BIN 6D, and part of the leaf damage QTL in BIN 6E. The approximate position of the flanking markers is shown in centimorgans of the S. lycopersicum genetic map (Tomato Expen 2000 map, www.solgenomics.net). (c) Leaf damage in RILs that were grouped on the basis of having the S. lycopersicum (S.l.) or S. galapagense (S.g.) alleles for the QTL on chromosomes 6 or 8. Bars represent means ± SE. Different letters indicate significant differences, p < 0.05, HSD test. (d) Larval mass in RILs separated by having the S. lycopersicum (S.l.) or S. galapagense (S.g.) allele for the QTL on chromosomes 6. Different letters indicate significant differences, p < 0.05, HSD test. (e) Larval mass, percent survival, and damage score from an independent confirmation of recombinant lines that showed high (1 G and 2 G) or low (4 G, 47 G, 53 G, and 64 G) CPB resistance in Fig. 3. The plant genotype, S. lycopersicum (S.l.), S. galapagense (S.g.), or heterozygous (S.g./S.l.) at the site of the identified resistance QTL is indicated.