Details

Autor(en) / Beteiligte

• Maliepaard, C
• Je Bas, N
• Van Heusden, S
• Kos, J
• Pet, G
• Verkerk, R
• Vrielink, R
• Zabel, P
• Lindhout, P

Titel

Mapping of QTLs for glandular trichome densities and Trialeurodes vaporariorum (greenhouse whitefly) resistance in an F sub(2) from Lycopersicon esculentum x Lycopersicon hirsutum f. glabratum

Ist Teil von

• Heredity, 1995-01, Vol.75 (4), p.425-433

Erscheinungsjahr

1995

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• An F sub(2) of an interspecific cross between cultivated tomato (Lycopersicon esculentum cv. Moneymaker) and L. hirsutum f. glabratum was used to generate an RFLP linkage map. Distortion of single locus segregation (1:2:1) was observed for a number of markers from different chromosomes, always with a prevalence for L. hirsutum f. glabratum alleles. To identify quantitative trait loci (QTLs) for greenhouse whitefly (Trialeurodes vaporariorum) resistance in this F sub(2) population, life history components of the greenhouse whitefly population were evaluated. Two QTLs affecting oviposition rate mapped to chromosome 1 (Tv-1) and 12 (Tv-2). F sub(3) lines homozygous for either the L. esculentum allele or the L. hirsutum f. glabratum allele at one or both loci confirmed the effects of Tv-1 and Tv-2. The F sub(2) population was also evaluated for segregation of type IV and type VI glandular trichome densities. Two QTLs affecting trichome type IV density (TriIV-1 and TriIV-2) and one affecting type VI trichome density (TriVI-1) mapped to chromosomes 5, 9 and 1, respectively. These results do not support the hypothesis that the density of type IV trichomes is involved in whitefly resistance.