Table 4: Results from statewide disease resistance comparison of group means between public and private wheat varieties in Texas (2006-2007).

Type of diseaseOwnershipNumber of varietiesMean Statistical significance of difference in group means (at 5%)

PMPublic334.2
Private235.0No
Stripe rustPublic395.7
Private844.5Yes
Leaf rustPublic435.7
Private885.9No

(Source: Texas A&M University, “Variety Testing Information”) Note that the total number of public varieties under trial was 43. However, in case of PM, for many public varieties resistance rankings were not reported and hence excluded from the analysis. Disease resistance rankings range from 1–9, with 9 as the lowest resistance.