There are differences among species in susceptibility to ice damage (Williston 1974). There is also at least one report on within-species variation, where coastal Ioblolly pine was damaged more than interior seed sources in an ice storm (Jones and Wells 1969). Of ail the maladies affecting the growth and s&ival of southern pines. damage from ice storms is one of the most erratic and unpredictable. Incorporating resistance to ice damage in any tree improvement program would be extreme!y difficult, if not impossible. It might be possible, however, to identify useful factors that contribute to genetic susceptibility to ice damage in the event that a progeny test is damaged by ice.
Schmidtling, Ronald C.; Hipkins, Valerie. 2002. Factors Contributing To Genetic Variation In Ice Damage Susceptibility In Shortleaf Pine. Presented at the 26th Southern Forest Tree Improvement Conference, Athens, GA, June 26-29,200l.