Back to 2000 Annual Report

Sweet Corn Disease Nursery


2000 Annual Report

J.K. Pataky, P.M. Michener, N.D. Freeman, and M.C. Pate

Table 3. Criteria for classifying hybrid reactions to diseases in the 2000 nursery

  Classification of reaction
1 2 3 4 5 6 7 8 9
Common rust (%) < 5   <=10 <=18 <26 <33 <40 <49 >=49
NLB (%) <10 <=15 <=20 <24 <30 <=32 <38 <42 >=42
SLB < 2 <=2.5 < 3 < 4   < 5 < 6 < 7 >=7

Classification: 1 - resistant, 3 - moderately resistant, 5- moderate, 7 - moderately susceptible, 9 - susceptible.

Stewart's wilt classifications based on a cluster analysis of severity ratings and incidence of natural infection.

MDM classifications based on a cluster analysis of incidence in trials with predominantly MDMV-A or SCMV (MDMV-B).


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