scholarly journals Biomass Losses Caused by Teratosphaeria Leaf Disease in Eucalyptus globulus Short Rotation Forestry

Forests ◽  
2017 ◽  
Vol 8 (11) ◽  
pp. 447 ◽  
Author(s):  
Severiano Pérez ◽  
Carlos Renedo ◽  
Alfredo Ortiz ◽  
Félix Ortiz ◽  
Agustín Santisteban
Keyword(s):  
Eucalyptus Globulus ◽  
Leaf Disease ◽  
Short Rotation

Genetic variation for resistance to Mycosphaerella leaf disease and Eucalyptus rust on Eucalyptus globulus in Uruguay

2013 ◽  
Vol 43 (1) ◽  
pp. 97-107 ◽  
Author(s):  
Gustavo Balmelli ◽  
Sofía Simeto ◽  
Virginia Marroni ◽  
Nora Altier ◽  
Julio J. Diez
Keyword(s):  
Genetic Variation ◽  
Eucalyptus Globulus ◽  
Leaf Disease ◽  
Eucalyptus Rust ◽  
Mycosphaerella Leaf Disease

Association of Eucalyptus globulus leaf anatomy with susceptibility to Teratosphaeria leaf disease

2017 ◽  
Vol 48 (2) ◽  
pp. e12395 ◽  
Author(s):  
A. H. Smith ◽  
B. M. Potts ◽  
D. A. Ratkowsky ◽  
E. A. Pinkard ◽  
C. L. Mohammed
Keyword(s):  
Leaf Anatomy ◽  
Eucalyptus Globulus ◽  
Leaf Disease

Genetic control of Eucalyptus globulus harvest traits

2015 ◽  
Vol 45 (6) ◽  
pp. 615-624 ◽  
Author(s):  
Matthew G. Hamilton ◽  
Mauricio Acuna ◽  
John C. Wiedemann ◽  
Rick Mitchell ◽  
David J. Pilbeam ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Eucalyptus Globulus ◽  
Genetic Correlations ◽  
Basal Area ◽  
Field Trials ◽  
Slight Reduction ◽  
Growth And Survival ◽  
Short Rotation ◽  
Stem Straightness ◽  
Tree Genetics

The cost of harvesting short-rotation plantation eucalypts can be in excess of AU$2500·ha−1. Despite this high cost, the extent to which harvesting productivity is affected by tree genetics is not well understood. We address this issue in a study of two 10-year-old genetic field trials of Eucalyptus globulus Labill. in Australia. Standing-tree traits analysed were survival, diameter at breast height, basal area, and stem straightness and forking. Harvest traits analysed were volume, time, and productivity. Genetic group and within-group genetic variation (additive and dominance), stand-level family variation, phenotypic and genetic correlations, and the effects of inbreeding were estimated for these traits. The different scenarios studied showed that plantation harvest productivity was affected by tree genetics to some degree but was mainly affected through positive covariation with stem diameter. Harvest productivity is thus unlikely to have been adversely affected by past selection. Although no significant additive or dominance genetic variation in stem forking or straightness was detected, weak phenotypic correlations were consistent with harvest productivity being higher in straighter trees with no forking. High inbreeding depression was evident for growth and survival; however, in open-pollinated progeny, this resulted in only a slight reduction in harvest productivity (5.5%) compared with out-crossed progeny.

Genetic control of coppice and lignotuber development in Eucalyptus globulus

2003 ◽  
Vol 51 (1) ◽  
pp. 57 ◽  
Author(s):  
S. P. Whittock ◽  
L. A. Apiolaza ◽  
C. M. Kelly ◽  
B. M. Potts
Keyword(s):  
Genetic Diversity ◽  
Tree Growth ◽  
Artificial Selection ◽  
Eucalyptus Globulus ◽  
Cotyledonary Node ◽  
Subsequent Growth ◽  
Seedling Traits ◽  
Short Rotation ◽  
Vigorous Growth ◽  
Number Of Stems

The economics of short-rotation pulpwood plantations of Eucalyptus globulus as a coppice crop are influenced by stump survival and subsequent coppice growth rates. This study revealed significant genetic diversity in coppicing traits, both within and between subraces, following felling in a progeny trial after 9 years of growth. A total of 67% of trees coppiced after 14 months, but subraces varied from 43 to 73%. Heritabilities for coppice success (0.07) and subsequent growth (0.16–0.17) were low but statistically significant. Strong genetic correlation between presence/absence of coppice, the number of stems coppicing from the stump and modal coppice height, indicate that selection is possible by using the binary trait. The ability of a tree to coppice was genetically correlated with tree growth prior to felling (rg = 0.61) and with nursery-grown seedling traits, where large genetic differences were observed in the development of lignotubers. Coppicing was genetically correlated with the number of nodes with lignotubers (rg = 0.66) and seedling stem diameter at the cotyledonary node (rg = 0.91). These traits were uncorrelated with later age growth and with each other. The results suggest that coppicing is influenced by three independent mechanisms—lignotuber development, enlargement of the seedling stem at the cotyledonary node and vigorous growth—which enhance ability to survive catastrophic damage, and indicate that both lignotuber and coppice development can be altered by both natural and artificial selection.

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