Ice Damage in Thinned and Nonthinned Loblolly Pine Plantations Infected with Fusiform Rust
نویسندگان
چکیده
منابع مشابه
Genetic interaction of the fusiform rust fungus with resistance gene fr1 in loblolly pine.
ABSTRACT We propose a method for defining DNA markers linked to Cronartium quercuum f. sp. fusiforme avirulence (Avr) genes. However, before this method can be successfully employed, a spore competition study was needed to determine the genetic composition of single pycnial drops and multiple drops on single galls when using the standard inoculation procedure, whether virulent (avr1) basidiospo...
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Loblolly pines (Pinus taeda L.) thut were 8 to 17 yr old tolerated one to three fus[form rust (Cronartium quercuum [Berk.]Miyabe exShiraij sp. fusiforme) galls in theirstems. Families withfourormore galls in their stems lost 2.5% or more ofthe trees by age 17. In living trees with less thanf<jurstem galls, diameter growth was comparable to that of trees with no galls. Tolerance was indicated by...
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Cutover pine-hardwood s i t es in the Piedmont of central Georgia were prepared by prescribed burning or drum chopping and regenerated to loblolly pine (Pinus taeda L.) by planting or directseeding. Site preparation had Little effect on soil physical properties. After an average of 12 years, trees were larger in dbh and total height, the merchantable stand was greater, and distribution was more...
متن کاملEvaluation of Resistance to Fusiform Rust in Loblolly Pine from East Texas
A set of 21 loblolly pine families produced by crossing trees from east Texas were tested for resistance to fusiform rust disease. The parents of these families were surviving trees in stands that experienced extensive mortality in the 1960s due to southern pine beetle infestation. Seedlings were grown in tubes in a greenhouse and artificially inoculated with C. quercuum from five different sou...
متن کاملMapping Fusiform Rust Resistance Genes within a Complex Mating Design of Loblolly Pine
Fusiform rust resistance can involve gene-for-gene interactions where resistance (Fr) genes in the host interact with corresponding avirulence genes in the pathogen, Cronartium quercuum f.sp. fusiforme (Cqf). Here, we identify trees with Fr genes in a loblolly pine population derived from a complex mating design challenged with two Cqf inocula (one gall and 10 gall mixtures). We used single nuc...
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ژورنال
عنوان ژورنال: Southern Journal of Applied Forestry
سال: 1996
ISSN: 0148-4419,1938-3754
DOI: 10.1093/sjaf/20.3.136