Hybrid

SOUTHERN PEA (BLACKEYE, COWPEA)

Varieties and Resistance

Variety and Bacterial Root Cercospora Fusarium Blackeye Cowpea (type)* Blight Knot LeafSpot Wilt Mosaic Virus

Erectset (cream) R R - - -

Colossus-80 - R R - - (crowder)

Mississippi Silver - R - R - (crowder)

Magnolia Blackeye - R - - - (blackeye)

Zipper Cream - R - - - (cream)

Mississippi Purple R R - R - (crowder)

Mississippi Cream - R - - - (cream)

California Blackeye - R - - - No. 5 (blackeye)

Pinkeye Purplehull- - - - - R BVR (blackeye)

Mopod - - - - R (blackeye)

White Acre BVR - - - - R (cream)

* types -- crowder, cream and blackeye. Pod color and seed color are not always as indicated. R = Resistant or Tolerant

SPINACH

Reaction of Spinach Varieties to White Rust and Blue Mold

White Blue mold rust race 3 Variety reaction* reaction* Plant type

Green Valley II MR S semi- to full-savoy

Ozarka II MR S semi- to full-savoy

Coho MS R semi-savoy

Fall Green MR MR semi-savoy

Tyee S R semi-savoy

Skookum S R semi-savoy

Chinook II S R semi-savoy to flat

Crystal Savoy S R full-savoy

Melody S S semi-savoy

612 S S full-savoy

Dixie Market S S full-savoy

Iron Duke S S full-savoy

Bloomsdale L.S. S S flat

Wolter S R flat

Femic S R flat

Cascade S R flat

Rainier S R flat

Polka S R flat

St. Helens S R flat

Olympia S R flat

R = resistant; MR = moderately resistant; MS = moderately susceptible; S = susceptible

SWEET POTATO

Root Knot Internal Southern Variety Nematodes Wilt Cork Blight Soil Rot

Jewel R R R I S

Centennial S I I S S

Puerto Rico I-S S S I S

Jasper I-R I-R R - R

Gold Rush S R S - S

Nemagold R - S - I-R

Redgold S - I - S

Topaz R R R R S

R = Resistant or Tolerant I = Intermediate S = Susceptible

GRAPE

General Disease Resistance

According to Texas A&M University tests at Lubbock, American grapes (Vitis labrusca) and French hybrid grapes exhibit general disease resistance. The french grape (Vitis vinifera) has the greatest disease susceptibility. Muscadine grapes (genus Muscadinia), native to the United States, are resistant to most diseases.

Grape Rootstock

 Champanel
   
             Root resistant to:                          Root Knot Nematodes
                                                         Cotton Root Rot
   
             Foliage and fruit resistance to:            Black Rot
   

 Dogdridge
   
             Root resistant to:                          Root Knot Nematodes
                                                         Cotton Root Rot
   
 
 Corderc 1613
   
   Disease resistance unknown but produced superior yields at Lubbock.

Reaction to Black Rot

   
   Thompson Seedless:                                    Very Susceptible
   French and American Hybrids:                          Very Susceptible
   American Varieties:                                   Resistant

Reaction to Powdery Mildew

   Concord                                               Susceptible
   Chenin Blanc                                          Very Susceptible
   Emerald Riesling                                      Very Susceptible
   White Riesling                                        Very Susceptible
   Helena                                                Very Suceptible
   Zinfandel                                             Very Susceptible
   Ruby Seedless                                         Very Susceptible
   Thompson Seedless                                     Very Susceptible