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Testing Slash Pine for Rust Resistance in Artificial and Natural Conditions

Field tests to locate southern pines resistant to fusiform rust (Cronartiumfusiforme Hedgc. & Hunt ex Cumm.) are costly, time-consuming, and often unreliable (Henry and Jewell 1963; Kinloch and Kelman 1965; LaFarge and Kraus 1967). Hence, Jewell (1960) devised an inoculation technique in which telia-bearing oak leaves are suspended over pine seedlings in the cotyledon stage grown under controlled conditions of temperature and moisture. The technique was subse-quently modified (Jewell and Mallett 1964, 1967) to increase its capacity and efficiency.


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Author(s): Ronald J. Dinus

Publication: Tree Improvement and Genetics - Southern Forest Tree Improvement Conference - 1969