Gummy Stem Blight Resistance in Melon: Inheritance Pattern and Development of Molecular Markers.

ABSTRACT: Gummy stem blight (GSB) causes enormous losses to melon (Cucumismelo L.) production worldwide. We aimed to develop useful molecular markers linked to GSB resistance. In this study, 168 F2 plants were obtained from the F₁ population of a cross between the GSB-susceptible 'Cornell ZPPM 339' and the GSB-resistant 'PI482399' lines. A 3:1 ratio of susceptible and resistant genotypes was observed in the F₂ population, indicating control by a single recessive gene. Nucleotide-binding site leucine-rich repeat (NBS-LRR) genes confer resistance against insects and diseases in cucurbits including melon. We cloned and sequenced the TIR-NBS-LRR-type resistance gene MELO3C022157, located on melon chromosome 9, from resistant and susceptible lines. Sequence analysis revealed deletions in the first intron

SUBMITTER: Hassan MZ 

PROVIDER: S-EPMC6213961 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature