Resistance of loblolly pine sources to fusiform rust in field progeny tests

Resistance of loblolly pine sources to fusiform rust in field progeny tests by H. R Powers Download PDF EPUB FB2

Resistance of loblolly pine sources to fusiform rust in field progeny tests. Asheville, N.C.: U.S. Dept. of Agriculture, Forest Service, Southeastern Forest Experiment Station, [] (OCoLC)   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.

The study of relative fusiform rust resistance in pine families and sources in field plots is the final indicator that the trait is valuable. Greenhouse inoculations with the concentrated basidiospore spray (CBS) system (Matthews and Rowan ) or the forced air system (Snow and Kais ) are useful techniques in rust resistance by: 2.

Correspondence of Loblolly Pine Family Performance for Fusiform Rust Resistance from Two Field Testing Methods in the Southern United States. In review at For.

Sci. In this study, we compared rust breeding values of 56 loblolly pine families estimated from two independent sets of trials. Nearly two decades of research on the host-pathogen interaction in fusiform rust of loblolly pine is detailed.

Results clearly indicate that pathotype-specific genes in the host interacting with pathogen avirulence cause resistance as defined by the non-gall phenotype under favorable environmental conditions for disease development.

@article{osti_, title = {Two-stage selection in slash pine produces good gains in fusiform rust resistance}, author = {Sluder, E R}, abstractNote = {The best 6 of 21 progeny-tested first-generation slash pine selections were crossed in a half diallel to study inheritance patterns of their superior fusiform rust resistance (5 trees) and height (1 tree).

Fusiform rust gall Photo credit: G. Blakeslee - SFRC, Univ. of Florida. Fusiform rust is a disease caused by a fungus. This disease deforms or kills pine trees throughout the South, including north Florida. Since the late s and early s, fusiform rust has caused extensive damage in.

AbstractA 3-year progeny test of shortleaf X loblolly pine hybrids bred to recombine the high resistance of shortleaf pine to fusiform rust with the rapid growth rate of loblolly pine confirms the findings of an earlier artificial inoculation study.

Progeny of selected F2 hybrids backcrossed to loblolly pine were signifi. 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 Cited by: Fusiform rust incidence observed for the local nonimproved (checklot) trees in second-cycle progeny tests of loblolly pine. Percentage of local checklot trees infected was generally less in.

Project Methods Population Management Schemes with Focus on Sawtimber Quality: Progeny of the Atlantic Coastal Elite Breeding Population have been screened for fusiform rust resistance at the Resistance Screening Center.

Disease-free seedlings will be hedged, and rooted cuttings will be produced. Clonal field tests of elite populations will be established starting in and evaluated for. Forests5 Figure 3. Large, dying western white pine with hundreds of blister rust cankers on branches and main stem (left), and whitebark pine seedling with many stem infections, 13 months after artificial inoculation with C.

ribicola (right). A comparison of the underlying nature and challenges of increasing genetic resistance to the rusts in. CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Presence of major genes affecting rust-resistance of loblolly pine was investigated in a progeny population that was generated with a half-diallel mating of six parents.

A Bayesian complex segregation analysis was used to make inference about a mixed inheritance model that included polygenic effects and a single major. 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. Major gene detection for fusiform rust resistance using Bayesian complex segregation analysis in loblolly pine.

Li H(1), Ghosh S, Amerson H, Li B. Author information: (1)Department of Forestry and Environmental Resources, North Carolina State University, Campus BoxRaleigh, NCby: Much of the tissue culture work has been done on radiata pine.

Field testing results are considered. The aims and the advantages of forest biotechnology are discussed under the following headings. 1) Disease resistance: research is being carried out on a loblolly pine which would be resistant to fusiform rust.

six very susceptible or very resistant open-pollinated families, as determined in field progeny trials and/or greenhouse tests. The average rust indices (Hatcher et al. ) w 28, 77 and 32 for RS, SS, RL and SL family mixtures, respectively (Table 1).

Table 1. Average fusiform rust index for family mixtures of susceptible or resistant. The incidence of fusiform rust disease, caused by Cronartium quercuum (Berk.) Miyabe ex Shirai f. fusiforme increased to epidemic proportions in the southeastern United States in the late s and early s, coincident with in-creased land area converted to pine plantations and more intensive forest management (Schmidt ).Fusiform rust was the most economically important Author: Trevor D.

Walker, Steven E. McKeand. Correspondence of Loblolly Pine Response for Fusiform Rust Disease from Local and Wide-Ranging Tests in the Southern United States Forest Science, 63 (5), – By: J.

Spitzer, F. Isik, R. Whetten, A. Farjat & S. McKeand. Browsing subject area: Loblolly pine -- Diseases and pests Resistance of loblolly pine sources to fusiform rust in field progeny tests / (Asheville, N.C.: U.S.

Dept. of Agriculture, Forest Service, Southeastern Forest Experiment Station, []). Plant materials. Hybrid seeds used for this study were made by crossing rust-susceptible slash pineas the female, with pollen derived from loblolly pine which is heterozygous for fusiform rust resistance gene ly pine seeds used as a control/check were obtained from a full-sib cross of loblolly treeas the female, with pollen from a highly rust-susceptible Cited by: 2.Resistance Fertilizer-Induced Changes in Susceptibility to Fusiform Rust Vary Among Families of Slash and Loblolly Pine S.

J. Rowan Principal Research Plant Pathologist, U.S. Department of Agriculture, Southeastern Forest Experiment Station, Forestry Sciences Laboratory, Carlton .The field progeny tests are managed like normal pine plantations, and each tree is measured for its growth and disease resistance.

The data are analyzed, and the tests are screened to locate new plus-tree selections that have received the best genes from their parents.