CucCAP scientists uncover QTL associated with sulfur tolerance in melon, facilitating disease control options

Elemental sulfur is an effective, inexpensive fungicide widely used to control powdery mildew on cucurbits. Many melon varieties suffer from sulfur phytotoxicity limiting the use of this highly effective method of disease control. CucCAP researchers in Charleston, SC (USDA-ARS and Clemson University) in collaboration with HM.Clause identified a major QTL associated with sulfur tolerance in a melon mapping population. Genetic markers were developed for the major QTL and can be used to incorporate sulfur tolerance in melon breeding programs.


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Published July 22, 2020

DOI: 10.3389/fpls.2020.01097

effects on leaves

Photographs of young plants of the sulfur tolerant (AY) and sensitive (MR-1) parents after vaporized elemental sulfur treatment.

symptoms on leaves

Representative photos of damage ratings (0–100% in 20% increments) of melon leaves after vaporized elemental sulfur treatment.