Abstract
A procedure was developed which demonstrates the expression of differential resistance in pine callus tissues to the fungal pathogen Phytophthora cinnamomi Rands. Callus tissues were maintained on a modified Murashige and Skoog medium with 10−5M 2,4-D and inoculated with hyphae of P. cinnamomi at 26°C in the dark. The number of intracellular hyphae was used as an index of resistance. Loblolly and loblolly × shortleaf pine hybrids were determined to be more resistant to infection and invasion by the fungus than were shortleaf and Virginia pine.
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Abbreviations
- (AL):
-
loblolly pine—Alabama
- (PL):
-
South Carolina
- (AS):
-
shortleaf pine—Alabama
- (CS):
-
Georgia
- (AV):
-
Virginia pine—Alabama
- (H1):
-
loblolly × shortleaf pine hybrids—14–42 × 6-I-43
- (H2):
-
I-523 × 6-D-8
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Communicated by I. K. Vasil
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Jang, J.C., Tainter, F.H. Hyphal growth of Phytophtora cinnamomi on pine callus tissue. Plant Cell Reports 8, 741–744 (1990). https://doi.org/10.1007/BF00272108
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DOI: https://doi.org/10.1007/BF00272108