Side-by-side burley seedlings in float trays. KY 14 X L8 variety on left and TN 90 on right. Leaf cupping and stunting are more significant in the TN 90 seedlings.

Figure 1. Cold injury symptoms on two varieties of burley seedlings. Leaf cupping is the most common symptom. Note that symptoms are more severe on TN90, as compared to KY14 X L8. These examples are typical of differences in sensitivity among varieties.