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Sunday, August 2, 2020 | History

2 edition of Promising resistance to fusiform rust from southeastern slash pines found in the catalog.

Promising resistance to fusiform rust from southeastern slash pines

C. H. Walkinshaw

Promising resistance to fusiform rust from southeastern slash pines

by C. H. Walkinshaw

  • 31 Want to read
  • 16 Currently reading

Published by U.S. Dept. of Agriculture, Forest Service, Southern Research Station in Asheville, NC .
Written in English

    Subjects:
  • Slash pine -- Diseases and pests -- Southern States.,
  • Pine fusiform rust -- Southern States.,
  • Slash pine -- Disease and pest resistance -- Southern States.

  • Edition Notes

    StatementC.H. Walkinshaw.
    SeriesResearch paper -- SRS-16., Research paper SRS -- 16.
    ContributionsUnited States. Forest Service. Southern Research Station.
    The Physical Object
    Pagination6 p. :
    ID Numbers
    Open LibraryOL17717114M

    Hosts. Fusiform rust, caused by the fungus Cronartium quercuum f. sp. fusiforme, requires two hosts, southern hard pines and oaks, to complete its life cycle.. Thirty-two species of pines are susceptible to the disease. Slash, loblolly, and South Florida slash pines are highly susceptible; long-leaf and pond pines are less susceptible; and pitch and shortleaf pines are relatively resistant. Resistance to fusiform rust is relatively common in individual slash pines. Keywords: Cronartium quercuum fusiforme, selection for resistance to rust, Pinus diseases. INTRODUCTION Tree-improvement programs initially emphasized growth and form in the selection of southern pines. When rust had obviously become a problem in the 's onward.

    During the last half of the s, fusiform rust became the most devastating disease of slash pine (Pinus elliottii) and loblolly pine (P. taeda) in the southeastern United States (Dinus and Schmidt ).Fusiform rust, caused by Cronartium quercum f. sp. fusiforme, requires both pine and oak (Quercus spp.) species to complete its life cycle.. Infections on pine trees typically result in. Damage or mortality from pathogens can reduce productivity of forest plantations, as well as significantly harm natural forest ecosystems. Genetic resistance within the host species is the first line of defense for tree species. Resistance breeding programs for the native fusiform rust and exotic (to North America) white pine blister rust diseases are two of the longest concerted efforts in.

    Bill Pickens. Conifer Silviculturist, North Carolina Forest Service. Shortleaf pine, Pinus echinata, is the most widely distributed, but perhaps least understood of the four major southern yellow pines. 2 Growing in 22 states from southern New York to eastern Texas, it occupies the largest range (Fig. 1) of any pine in the southeastern United States. 5 Its extensive distribution reflects it. Table Mean fifth-year fusiform-rust data from half-diallel crosses among six loblolly and six slash pines. 1/R = rated resistant, S = rated susceptible to fusiform rust. 2/Within a column, means followed by a common letter do not differ at the level, Duncans Multiple Range Test.


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Promising resistance to fusiform rust from southeastern slash pines by C. H. Walkinshaw Download PDF EPUB FB2

Promising resistance to fusiform rust from southeastern slash pines. Asheville, NC: U.S. Dept. of Agriculture, Forest Service, Southern Research Station, [] (OCoLC) This resistance appears to be stable in a variety of fungus field isolates. Citation: Walkinshaw, Charles H. Promising Resistance to Fusiform Rust from Southeastern Slash Pines.

Res. Pap. SRS Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station. 6 p. Posted Date: April 1, ; Modified Date: August Cited by: 3. Get this from a library. Promising resistance to fusiform rust from southeastern slash pines. [C H Walkinshaw; United States.

Forest Service. Southern Research Station.]. Fortunately, genetic rust resistance is relatively abundant in both slash and loblolly pines and has become the foundation for the management of the disease. Rust resistant half- and full-sib progeny from resistant parents established in seed orchards are routinely planted, especially in high-rust.

In the southeastern USA, fusiform rust resistant loblolly and slash pines may be deployed as 1) ulked seed orchard mixes, 2) half-sibling (sib) family mixtures, 3) single half-sib families, 4. Fusiform rust is a widespread and damaging disease of loblolly pine (Pinus taeda) and slash pine (P. elliottii) in the by the fungus Cronartiium quercuum f.

fusiforme (Cqf), the disease leads to rust galls or cankers on the main stem and/or branches of galls effect wood quality and yield by causing deformed and broken stems in young trees. Rust diseases of forest trees have large economic and ecological impacts in North America.

The two most notable affecting conifers are the native fusiform rust (FR) of the southern pines and the non-native, invasive white pine blister rust (WPBR) of the white pines (also known as 5-needle pines) (Figure 2 and Figure 3).Loblolly (Pinus taeda), slash (P. elliottii) and longleaf (P.

palustris. SCHMIDT, R. A., H. POWERS JR. and G. SNOW (): Application of genetic disease resistance for the control of fusiform rust in intensively managed southern pine. Phytopathology SOHN, S. and R. GODDARD (): Influence of infection percent on improvement of fusiform rust resistance in slash pine.

Silvae Genet. Walkinshaw has written: 'Promising resistance to fusiform rust from southeastern slash pines' -- subject(s): Slash pine, Disease and pest resistance, Diseases and pests, Pine fusiform rust. The fusiform rust fungus is a heteroecious rust, which means that it requires an alternate host in some stages of development.

In addition to infecting pines, the pathogen will use oaks as an alternate host. The pathogen uses wind to disperse from infected to healthy trees. Promising Resistance to Fusiform Rust from Southeastern Slash Pines Abstract Two hundred twenty-four disease-free slash pines with good growth and form were tested for rust resistance.

Trees in Alabama, Florida Louisiana, and Mississippi were selected. After artificial inoculations, a low. Fusiform rust, Cronarium quercuum f sp. fusiforme, is the most damaging disease of slash and loblolly pines throughout the southeastern United disease causes stem and branch cankers (galls) to form on infected trees (Figure ).The majority of infections occur prior to age 5.

Extensive planting of susceptible slash and loblolly pines since the s has resulted in an epidemic of fusiform rust. Infected trees can be found throughout the southern pine region (fig. ), but losses are most serious on Coastal Plain sites from Louisiana to southeastern South Carolina. Dear Colleagues, This is a Special Issue of Forests coinciding with an Information Exchange Group (IEG) Workshop, “Integrating Biological Research and Fusiform Rust Resistance Screening and Breeding“, 14–15 JuneResistance Screening Center, Bent Creek Experimental Forest, Asheville, NC, USA.

New knowledge is being generated by sequencing of pathogen and host genomes, and the. Resistance screening center procedures manual: a step-by-step guide used in the operational screening of southern pines for resistance to fusiform rust Jl Knighten Ch Young.

Fusiform rust, a fungal disease caused by Cronartium quercum f. fusiforme, is the most damaging disease of slash and loblolly pines in the southeastern United States.

There are currently over million acres of slash and loblolly pine timberland in the Southeast, some of the most productive forests in the world. Forest managers rely. Cortical monoterpene composition was determined for 43 relatively resistant and 42 relatively susceptible slash pine (Pinus elliottii var.

elliottii) clones selected on the basis of their fusiform rust (Cronartium quercuum fusiforme [C. fusiforme]) resistance breeding values based on research from Florida's Cooperative Forest Genetics Research Program near Gainesville, Florida. Fusiform rust, Cronartium quercuum f. fusiforme, is the most damaging disease of slash and loblolly pines throughout the southeastern United disease causes stem, branch and trunk cankers (galls) to form on infected trees (Figures 46 and 47).

The majority of infections occur prior to age 5. loblolly and slash pines. All plantings occurred in areas rated as high hazard in region-wide surveys (PhelpsBechtold and others ). Methods Source Studies Fusiform rust resistant slash and loblolly pine seeds were collected in the GFCIUSFS rust resistant orchards and improved slash and loblolly pine seeds.

Fusiform rust of southern pines: a major success for forest disease management. Schmidt RA. ABSTRACT The effective management of fusiform rust in slash and loblolly pine plantations is a major success story for disease management scientists and practitioners in the southeastern United States.

bility of fusiform rust resistance slash pine families. fusiform rust from southeastern slash pines. South. The handy book is fascinating by the comprehensive.Their goal has been to improve volume growth, tree form, disease resistance, and wood quality in southern pines, particularly slash pine (Pinus elliottii) and loblolly pine (P.

taeda). The disease of focus has been fusiform rust, which is caused by the fungus Cronartium quercum f. sp. fusiforme. Prior to the s, fusiform rust existed at.Fusiform-Rust-Hazard Maps Forest Service 0‘cD4s * Southeastern Forest Experiment Station for Loblolly and Slash Pines Robert L. Anderson, Thomas C.

McCartney, Noel D. Cost, Hugh Devine, and Martin Botkinl Research Note SE December ABSTRACT Rust-hazard saps made from Forest Inventory and Analysis plot data show that fusiform rust on slash.