Sources of Resistance in U.S. Plant Introductions to Watermelon Vine Decline Caused by Squash Vein Yellowing Virus

Sources of Resistance to Race 2WF Powdery Mildew in U.S. Watermelon Plant Introductions

Powdery mildew of cucurbits, incited by Podosphaera xanthii (Castagne) Braun & Shishkoff (syn. Sphaerotheca fuliginea auct. p.p.), is an economically important foliar disease. which is now common in watermelon [Citrullus lanatus (Thunb.) Mastum. & Nakai]. This disease occurs in all watermelon-growing areas and can reduce yields by up to 30%. Finding and breeding for resistance to this disease i...

Mature Watermelon Vine Decline and Similar Vine Decline Diseases of Cucurbits

Since the mid-1980s, watermelon fields in southwestern Indiana have experienced outbreaks of a disease syndrome known as mature watermelon vine decline (originally known as sudden wilt). The disease was a limiting factor in production and reduced yields in many fields in 1989, 1995, and 1999. In 2000, it was especially severe, affecting more than 50 percent of watermelon acreage in southwest In...

Identification and characterization of a novel whitefly-transmitted member of the family potyviridae isolated from cucurbits in Florida.

ABSTRACT A novel whitefly-transmitted member of the family Potyviridae was isolated from a squash plant (Cucurbita pepo) with vein yellowing symptoms in Florida. The virus, for which the name Squash vein yellowing virus (SqVYV) is proposed, has flexuous rod-shaped particles of approximately 840 nm in length. The experimental host range was limited to species in the family Cucurbitaceae, with th...

Study of resistance to cucumber mosaic virus watermelon mosaic virus and zucchini yellow mosaic virus in melon cultivars

Ecology and management of whitefly-transmitted viruses of vegetable crops in Florida.

A variety of fresh market vegetables, including watermelon and tomato are economically important crops in Florida. Whitefly-transmitted Squash vein yellowing virus (SqVYV) was first identified in squash and watermelon in Florida in 2005 and shown to cause a severe decline of watermelon vines as crops approach harvest. Florida is most economically impacted by SqVYV, although the virus has been d...