Author:
Abd Bashar Falih,Dhaher Inad
Abstract
Abstract
Tomato Mi-1.2 resists root-knot nematodes. Mi, or a similar gene, may also be responsible for resistance to Bemisia tabaci whitefly in Mi-bearing commercial tomato varieties. Mi-1.2 is the only resistance gene that fights root-knot nematodes, aphids, and whiteflies. Mi is useful in integrated pest control strategies because these pests are the most damaging to tomato crops worldwide. Ten tomato varieties were produced to determine which are resistant to TYLCV and the root-knot nematode Meloidogyne spp. and whether these genes are linked. TYLCV-free nurseries were used to grow these tomato varieties. To assess these cultivars’ sensitivity and resistance to TYLCV, they were transferred to the plastic house and planted during Bemisia tabaci insect activity. These types were planted in soil contaminated with nematode eggs and juvenal, vaccinated, and reported every 15 days for disease incidence. Class H cultivars were vulnerable to nematodes and the virus, while class Gres were TYLCV-resistant. The rest of the cultivars were TYLCV-resistant, nematode-resistant, or both.
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