Marker associations for fusiform rust resistance in a clonal population of loblolly pine (Pinus taeda, L.)

2020 ◽  
Vol 16 (6) ◽  
Author(s):  
W. Patrick Cumbie ◽  
Dudley A. Huber ◽  
Victor C. Steel ◽  
William Rottmann ◽  
Christina Cannistra ◽  
...  
1988 ◽  
Vol 12 (4) ◽  
pp. 259-261 ◽  
Author(s):  
J. David Lenhart ◽  
W. Thomas McGrath ◽  
Terry L. Hackett

Abstract Five surveys of pine plantations in East Texas over an 18-year period (1969-1987) indicated that fusiform rust (Cronartium quercuum [Berk.] Miyabe ex Shirai f. sp. fusiforme Birdsall and Snow) infection rates have increased to current levels of about 50% on slash pine (Pinus elliottii Engelm.) and are continuing to increase on loblolly pine (Pinus taeda L.) to 10-15% levels. South. J. Appl. For. 12(4):259-261.


1986 ◽  
Vol 10 (2) ◽  
pp. 84-87
Author(s):  
H. R. Powers

Abstract Seedlings of Livingston Parish (Louisiana) loblolly pine (Pinus taeda L.) have been widely used across the Gulf and south Atlantic Coastal Plain to reduce the damage caused by the fusiform rust disease. Since this seed-source material provided the first rust-resistant seedlings available to forestland managers, it was used wherever rust damage was heavy, in some cases into the Piedmont north of the recommended area of planting. This paper evaluates the performance of ten-year-old Livingston Parish trees in such an area. The rust resistance of the Livingston Parish trees was outstanding, with 83% being free of disease as compared with only 14% of the commercial controls. There was no difference in growth between the two groups of trees, and ice breakage was not significantly greater in the Livingston Parish trees. South. J. Appl. For. 10:84-87, May 1986.


1984 ◽  
Vol 8 (4) ◽  
pp. 231-232
Author(s):  
Walter D. Kelley

Abstract No differences were found between mornings (0800-1000 h) and afternoon (1600-1800 h) applications of triadimefon on loblolly pine (Pinus taeda L.) seedlings for control of fusiform rust in nursery beds. Also, rates of 4, 6, 8, and 12 oz/ac were equally effective in protecting seedlings. Results indicate that a lesser rate than the standard 8 oz/ac/application can be used and that time of application is not important.¹


1977 ◽  
Vol 1 (4) ◽  
pp. 8-10
Author(s):  
D. H. Van Lear ◽  
N. B. Goebel ◽  
J. G. Williams

Abstract The performance of adjacent unthinned plantations of loblolly (Pinus taeda L.) and slash pine (P. elliottii Engelm.) on three sites in South Carolina was evaluated after 16 growing seasons. Sites ranged from a noneroded Piedmont soil to an excessively drained sandy soil of the Sandhills physiographic region. Growth and survival varied widely among sites, with greatest productivity occurring in the Piedmont and the lowest in the Congaree Sandhills. Despite the droughty nature of the latter site, survival after 16 growing seasons was over 80 percent for both species. On a volume basis, loblolly pine outperformed slash pine at the upper Pidemont and Aiken Plateau sites, while slash pine was superior on the dry Sandhills site. Incidence of fusiform rust was much higher for both species at the Aiken Plateau than at the other sites.


1986 ◽  
Vol 10 (4) ◽  
pp. 195-197 ◽  
Author(s):  
John F. Kraus

Abstract A fusiform rust-resistant strain of loblolly pine (Pinus taeda L.) is being developed by interspecific hybridization with shortleaf pine (P. echinata Mill.). Backcrosses of the hybrid to loblolly pine have early height growth equal to loblolly pine and retain a high level of fusiform rust resistance. Previous breeding results are reviewed and updated, and new data from a developing hybrid seedling seed orchard are presented. Breeders are encouraged to develop their own hybrid programs for production of rust-resistant seedlings. South. J. Appl. For. 10:195-197, Nov. 1986.


1978 ◽  
Vol 2 (2) ◽  
pp. 55-59 ◽  
Author(s):  
Ron Hunt ◽  
Glenn Cleveland

Abstract At age five, disk cultivation between trees, the maximum-care treatment, produced a statistically significant height increase for sycamore (Platanus occidentalis L.), sweetgum (Liquidambar styraciflua L.), and loblolly pine (Pinus taeda L.) as compared to trees grown on minimum-care (shear and burn) plots. Volume index (dbh² x height) of loblolly pine was significantly larger with cultivation than with the minimum treatment. Fusiform rust incidence (Cronartium fusiforme Hedgc and Hunt ex Cumm.) on loblolly pine was 1.5 to 3.0 times greater on maximumcare plots than on minimum-care plots. The hardwoods on less than the maximum-care plots experienced heavy mortality and very little growth.


1986 ◽  
Vol 10 (4) ◽  
pp. 215-216 ◽  
Author(s):  
Ellis V. Hunt ◽  
J. David Lenhart

Abstract Four surveys of pine plantations in East Texas between 1969 and 1984 indicate that fusiform rust (Cronartium quercuum (Berk.) Miyabe ex Shirai f. sp. fusiforme) infection rates are increasing on slash pine (Pinus elliottii Engelm. var. elliottii) and either decreasing or about constant on loblolly pine (Pinus taeda L.). Currently, stem infections occur on about 1 in 2 slash pines and 1 in 14 loblolly pines. South. J. Appl. For. 10:215-216, Nov. 1986.


Forests ◽  
2015 ◽  
Vol 6 (12) ◽  
pp. 2739-2761 ◽  
Author(s):  
Henry Amerson ◽  
C. Nelson ◽  
Thomas Kubisiak ◽  
E. Kuhlman ◽  
Saul Garcia

1988 ◽  
Vol 12 (1) ◽  
pp. 18-20
Author(s):  
Walter D. Kelley

Abstract Protection from fusiform rust, caused by Cronartium quercuum (Berk.) Miyabe ex Shirai f. sp. fusiforme Burdsall and Snow, on emerging seedlings of loblolly pine (Pinus taeda L.) was not diminished by storing the treated seeds up to 24 days before sowing. Young seedlings were inoculated with basidiospores of C quercuum f. sp. fusiforme 31 days after seeds were sown, and seedlings were examined for rust galls 7 months later. No galls were found on seedlings from seed dressed with triadimefon, regardless of length of storage. Percentages of seedlings with galls from seeds subjected to the triadimefon seed soak ranged from 12% (0 days storage) to 2% (24 days storage). Sixty-three percent of the seedlings from nontreated control seeds had galls. South. J. Appl. For. 12(1):18-20


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