ExploringTy resistance genes and genetic diversity in improved tomato lines selected from commercial hybrids.

ABSTRACT:

Background

Tomato yellow leaf curl disease (TYLCD), caused by the Tomato Yellow Leaf Curl Virus (TYLCV), threatens global tomato production, making resistance breeding crucial. This study evaluated 17 tomato lines (TLs; F₆ and F₇) derived from F₁ hybrids '65010', 'Nairouz', 'SVTD8320', and 'Tyrmes' for 27 traits related to TYLCD resistance, vegetative growth, yield, and fruit quality under natural whitefly-mediated inoculation during the 2022 and 2023 fall seasons. Genetic diversity was assessed using phenotypic (PCV) and genotypic (GCV) coefficients of variation, heritability (h²_b), and genotypic correlation coefficient (r_g) of the estimated traits.

Results

According to PCR-based specific markers, most TLs ha

SUBMITTER: Mahmoud AMA 

PROVIDER: S-EPMC12459071 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature