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Intraspecific response of Pinus taeda L. to Grosmannia huntii and Leptographium terebrantis infection
Author(s) -
Devkota Pratima,
Eckhardt Lori G.
Publication year - 2019
Publication title -
forest pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.535
H-Index - 49
eISSN - 1439-0329
pISSN - 1437-4781
DOI - 10.1111/efp.12512
Subject(s) - intraspecific competition , biology , inoculation , pinus <genus> , botany , seedling , horticulture , zoology
We examined intraspecific and inter‐year variation in tolerance of Pinus taeda to two ophiostomatoid fungi, Leptographium terebrantis and Grosmannia huntii . Containerized seedlings of P. taeda from 27, 32, 17 and 23 different elite genetic families were artificially inoculated with L. terebrantis and G. huntii in years 2013, 2014, 2016 and 2017, respectively. Six connector families were inoculated every year. Eight weeks post‐inoculation, lesion and occlusion were measured on each seedling to determine the relative susceptibility/tolerance of families to these fungi. Pinus taeda families widely differed in these parameters suggesting intraspecific variation in the susceptibility/tolerance to the inoculated pathogens. The overall tolerance of the connector families to these fungi varied among the experimental years. These results showed that intraspecific variation to L. terebrantis and G. huntii exists among P. taeda families and it could be possible to select tolerant families to minimize the potential impact due to these fungi.