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Sweet Corn Disease Nursery

2001 Annual Report

Jerald Pataky, Phil Michener, Andrea Campaña
and Mohammad Babadoost

Table 3. Criteria for classifying hybrid reactions to diseases in the 2001 nursery

  Classification of reaction
RP Resistant Moderately resistant Moderate Moderately susceptible Susceptible
0 1 2 3 4 5 6 7 8 9
Stewart's wilt   less than or equal to 2.5 less than or equal to 3 less than or equal to 3.6 < 4 less than or equal to 4.5 less than or equal to 5 < 5.6 less than or equal to 6.5 > 6.5
Rust -avirulant (%) less than or equal to 5 less than or equal to 10 less than or equal to 15 less than or equal to 21 less than or equal to 25 less than or equal to 31 < 38 less than or equal to 45 < 50 greater than or equal to 50
Rust -virulent (%) 0   < 18 < 24 less than or equal to 30 less than or equal to 33 < 38 < 44 < 50 greater than or equal to 50
NLB (%)   less than or equal to 6 < 12 < 19 < 26 < 33 < 40 < 46 < 53 > 53
SLB (%)   less than or equal to 10 less than or equal to 16 less than or equal to 22 less than or equal to 26 less than or equal to 29 less than or equal to 35 less than or equal to 41   > 41
GLS (%)       < 40   < 60 < 73 < 80 < 88 greater than or equal to 88
Classification: 0 - Rp-resistance, 1 - resistant, 3 - moderately resistant, 5 - moderate, 7 - moderately susceptible, 9 - susceptible.

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* Department of Crop Sciences
* College of Agricultural, Consumer, and Environmental Sciences
* University of Illinois at Urbana-Champaign

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