Selection of tomato plant resistant to arthropod pests mediated by zingiberene

Abstract

The F₁ (Lycopersicon esculentum ‘Tom - 556’ x L. hirsutum var. hirsutum ‘PI - 127826’) and F₂ populations were obtained seeking to select in this last plants with high zingiberene contents, as indirect selection criterion to arthropod-pests-resistant plants. P₁ ‘Tom - 556’ (45), P₂ ‘PI - 127826’ (50), F₁ (50) and F₂ (295) population plants were evaluated at 50 days of life. During five days, three quantifications in each plant were made by extraction of 4.21cm² of tomato plant leaflets in 2mL of hexane stirred for 40 seconds and quantified in spectrophotometer at 270 nm. The absorbency (Abs) average of zingiberene contents was obtained for individual and population plants and four F₂ genotypes with high zingiberene contents were selected (BPX - 368  179, Abs = 0,775; BPX - 368 ≠ 105, Abs = 0,649; BPX - 368 ≠ 250, Abs = 0,623; BPX - 368 ≠ 92, Abs = 0,605). The efficiency of plant selections with high zingiberene contents as an indirect selection criterion to arthropod pests tomato plants resistance was confirmed