1 / 15

VIRUS AND VARIETIES – 2009 UPDATE 2010 Empire State Expo

VIRUS AND VARIETIES – 2009 UPDATE 2010 Empire State Expo. Steve Reiners, Jim Ballerstein Associate Professor of Horticultural Sciences NYSAES, Cornell University, Geneva sr43@cornell.edu.

keaira
Download Presentation

VIRUS AND VARIETIES – 2009 UPDATE 2010 Empire State Expo

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. VIRUS AND VARIETIES – 2009 UPDATE2010 Empire State Expo Steve Reiners, Jim Ballerstein Associate Professor of Horticultural Sciences NYSAES, Cornell University, Geneva sr43@cornell.edu

  2. NYS Yield losses since 2001 more than $10 million – most severe in odd numbered years with up to 90% loss! 2001 2003 2005 2007 2009

  3. Snap Bean Issues • Insecticides/seed treatments not effective • Virus effects are compounded by plant stress - temperature, soil moisture • Resistant varieties are long term solution • Until then, determine level of tolerance in existing varieties

  4. At the request of the NY Vegetable Research Council!

  5. 2008 Greenhouse evaluation of foliar response to CMV Planted May 7 Inoculated with virus on May 21 Readings taken on June 6 RatingVisual Symptoms 1 Symptoms absent to very mild 2 Mild chlorosis, slight twisting, 3 Twisted leaves, epinasty 4 Blisters, severe, epinasty on young leaves 5 Severe distortion, blisters, necrosis

  6. RatingVisual Symptoms 1 - Symptoms absent to very mild 2 - Mild chlorosis, slight twisting 3 - Twisted leaves, epinasty 4 - Blisters, severe, epinasty on young leaves 5 - Severe distortion, blisters, necrosis

  7. Field Trials, ’08 and ‘09 – Planting One – June 25 Planting Two – July 16 Hystyle plants grown in greenhouse and inocuated with CMV, used to provide inoculum for field. Half of field plot inoculated with CMV at the first trifoliate stage, then covered with floating row cover. Five feet of row harvested.

  8. 2008 Results – Across all varieties 2009 Results – Across all varieties

  9. 2008

  10. 2008 2009

  11. Of 21 varieties field tested in 2008 and 2009, only five showed a level of tolerance to Cucumber Mosaic Virus Huntington Rogers Large sieve Pensacola Rogers Large sieve Summit Seneca Large sieve Cartegena Seminis Whole Banga Seminis Whole

  12. Plans for 2010 Repeat field trial with tolerant varieties and add new ones. All varieties inoculated with CMV. Several varieties will be inoculated with both CMV and Alfalfa Mosaic Virus (AMV). Greenhouse screen with all varieties to test for resistance to Clover Yellow Vein Virus (Phil Griffiths).

More Related