Protect cucurbit crops from Papaya ringspot virus with resistant hybrids

At Syngenta Vegetable Seeds, we invest heavily in research and development to meet grower needs and help overcome challenges. Papaya ringspot virus (PRSV) threatens papaya and cucurbits in all regions of the world where these crops are cultivated. To help growers address this challenge, recently introduced Syngenta squash varieties including Grandprize, Everglade, Spineless Supreme, San Martin, Ebano and Payload exhibit intermediate resistance to PRSV. This resistance will restrict the growth and development of PRSV in crops, resulting in healthier plants and higher yield and profit potentials.

What is PRSV?

PRSV is a pathogenic plant virus of the genus Potyvirus that is transmitted mechanically and by aphids. Leaves infected with PRSV show intense mosaic with a narrowing of the leaves and stunting. Plants that become infected with PRSV at an early age experience stunted plant growth that often results in limited yields, whereas plants that become infected at a later age tend to produce unmarketable crops of deformed fruit.

Enhanced resistance for higher yields than the competition

Through lab tests comparing Syngenta’s intermediately resistant varieties to competing varieties, our pathologists found that Syngenta varieties exhibited less PRSV infestation, demonstrated better leaf health and produced no distorted fruits. These trial results confirm that growers facing PRSV pressure can confidently choose Syngenta squash varieties over competing products to achieve maximum marketable yields.

PRSV Incidence in Trial Varieties

Source: May 2018, Naples, FL

Source: December 2018, Naples, FL

SUSCEPTIBLE RESPECT EVERGLADE

SUSCEPTIBLE LIONESS GRANDPRIZE

For more information about Syngenta squash varieties, please visit www.SyngentaUS.com/vegetables.All photos are either the property of Syngenta or are used with permission.

©2019 Syngenta. Performance assessments are based upon results or analysis of public information, field observations and/or internal Syngenta evaluations. Some or all of the varieties may be protected under one or more of the following: Plant Variety Protection, United States Plant Patents and/or Utility Patents and may not be propagated or reproduced without authorization. The Alliance Frame, the Purpose Icon and the Syngenta logo are trademarks of a Syngenta Group Company.

GS 4342_2_1 SLC 11494A 01-2019

SYNGENTA SQUASH HYBRID DISEASE RESISTANCE

ZYMV WMV PRSV CMV SLCV Px

Spineless types

Spineless Beauty

Spineless Perfection Yes Yes Yes

Spineless Supreme Yes Yes Yes Yes Yes

Medium green zucchini

Cashflow Yes

Payroll Yes Yes Yes

Paycheck Yes Yes Yes Yes

Payload Yes Yes Yes Yes Yes

Medium-dark

green zucchini

Envy Yes Yes

Everglade Yes Yes Yes Yes Yes

Dark green zucchini

Noche Yes Yes

Contender Yes Yes

Equinox Yes Yes Yes

Ebano Yes Yes Yes Yes Yes Yes

Jacobo Yes Yes Yes

Pascola Yes Yes Yes Yes

Golden zucchiniGolden Delight Yes Yes

Golden Glory Yes Yes Yes

Grey zucchiniSan Martin Yes Yes Yes Yes Yes

San Isidro Yes Yes Yes Yes

Straightneck

yellow squash

Enterprise

Goldprize Yes Yes

Grandprize Yes Yes Yes Yes

Crookneck yellow squashGentry

Gold Star Yes Yes

Scallop Sunburst (yellow)

Round zucchini Brice Yes Yes Yes Yes

DISEASE ABBREVIATION KEY: CMV: Cucumber mosaic virus PRSV: Papaya ringspot virus Px: Powdery mildew caused by specific races of Sphaerotheca fuliginea SLCV: Squash leaf curl virus WMV: Watermelon mosaic virus ZYMV: Zucchini yellow mosaic virus