scholarly journals History and Technological Significance of Hevea Rubber Production in Guatemala

1992 ◽  
Vol 2 (3) ◽  
pp. 321-323
Author(s):  
Ray F. Dawson ◽  
F.W. Owen Smith
Keyword(s):  
Leaf Blight ◽  
South American ◽  
The Pacific ◽  
Regional Markets ◽  
Microcyclus Ulei ◽  
Tropical America ◽  
The Caribbean ◽  
Blight Disease ◽  
Technological Significance ◽  
Successful Production

Production of rubber from Hevea brasiliensis (Willd. ex A. Juss) Muell.-Arg. (Euphorbiaceae) is greatest in southeastern Asia where the South American leaf blight disease is absent. Except for the Pacific Piedmont of Guatemala, plantation production in the Americas is limited severely by the now widespread presence of the pathogen Microcyclus ulei (P. Henn.) Arx. Mean latex yields from trees growing on the Piedmont approximate those of Indonesia and Malaysia, with little evidence of damage from leaf blight. The scope and scale of the Guatemalan anomaly suggest that environmentally modulated escape rather than previously assumed disease resistance may be the key to successful production of natural rubber in this hemisphere. The Guatemalan industry is presently well-organized to service regional markets in Mexico and the Caribbean Basin. Given due attention to environmental analysis, it may serve also as a model for the development of regional production facilities in other parts of tropical America.

Molecular mapping of genes conferring field resistance to South American Leaf Blight (Microcyclus ulei) in rubber tree

2003 ◽  
Vol 108 (1) ◽  
pp. 160-167 ◽  
Author(s):  
V. Le Guen ◽  
D. Lespinasse ◽  
G. Oliver ◽  
M. Rodier-Goud ◽  
F. Pinard ◽  
...  
Keyword(s):  
Molecular Mapping ◽  
Rubber Tree ◽  
Field Resistance ◽  
Leaf Blight ◽  
South American ◽  
Microcyclus Ulei

scholarly journals Assessment of rubber tree panels under crowns resistant to South American leaf blight

2011 ◽  
Vol 46 (5) ◽  
pp. 466-473 ◽  
Author(s):  
Larissa Alexandra Cardoso Moraes ◽  
Adônis Moreira ◽  
José Roberto Antoniol Fontes ◽  
Everton Rabelo Cordeiro ◽  
Vicente Haroldo de Figueiredo Moraes
Keyword(s):  
Nutritional Status ◽  
Rubber Tree ◽  
Leaf Blight ◽  
Physiological Characteristics ◽  
Yield Potential ◽  
South American ◽  
Efficient Technology ◽  
Simultaneous Evaluation ◽  
Microcyclus Ulei ◽  
Selection Of

The objective of this work was to assess the performance of panel clones under crowns resistant to South American leaf blight (Microcyclus ulei). The experiment was carried out with 18 panel clones crown-budded with Hevea pauciflora x H. guianensis, in a Xanthic Ferralsol (Oxisol) in Manaus, AM, Brazil. The following parameters were evaluated: dry rubber yield, plant nutritional status, and anatomical and physiological characteristics of the latex vessels. In the first three years of evaluation, the panel clones IAN 2878, IAN 2903, CNS AM 7905, CNS AM 7905 P1, and PB 28/59 showed the highest dry rubber yield potential, while the clones IAN 6158, IAN 6590, and IAN 6515 should not be recommended for crown budding. Higher potassium and copper foliar content in panel clones were associated to an increase in dry rubber yield. The simultaneous evaluation of anatomical and physiological characteristics of latex is fundamental for the selection of panel clones in the Amazon region. Crown budding is an efficient technology for South American leaf blight management in endemic regions.

Performance of different rubber tree clones against South American leaf blight (Microcyclus ulei)

2013 ◽  
Vol 44 (3) ◽  
pp. 211-218 ◽  
Author(s):  
L. G. Silva ◽  
W. C. J. Junior ◽  
A. F. Souza ◽  
F. R. Alves ◽  
E. L. Furtado
Keyword(s):  
Rubber Tree ◽  
Leaf Blight ◽  
South American ◽  
Microcyclus Ulei

Identification of QTLs involved in the resistance to South American leaf blight (Microcyclus ulei) in the rubber tree

2000 ◽  
Vol 100 (6) ◽  
pp. 975-984 ◽  
Author(s):  
D. Lespinasse ◽  
L. Grivet ◽  
V. Troispoux ◽  
M. Rodier-Goud ◽  
F. Pinard ◽  
...  
Keyword(s):  
Rubber Tree ◽  
Leaf Blight ◽  
South American ◽  
Microcyclus Ulei

Eruption of El Ruiz Volcano, Colombia

1986 ◽  
Vol 2 (1-4) ◽  
pp. 50-53
Author(s):  
Miguel Gueri
Keyword(s):  
Volcanic Eruptions ◽  
South American ◽  
The Earth ◽  
Richter Scale ◽  
The Pacific ◽  
History Of ◽  
Combined Action ◽  
The Caribbean ◽  
The Republic ◽  
Eastern Seaboard

The Republic of Colombia is situated in the northern part of South America, with coasts to both the Atlantic and the Pacific Oceans. It has a long history of natural disasters: hurricanes from the Caribbean sea have lashed the eastern seaboard more than once, while the western part of the country belongs to the so called “Pacific Fire Belt.” Being in the zone of contact between the Nazca and the South American Techtonic Plates, where the former gets under the latter, it suffers from volcanic eruptions and earthquakes (Figures 1 and 2). The more recent major earthquakes were those in Tumaco in 1979 and Popayan in 1983. In Tumaco, the combined action of the earth movement (magnitude 7.9 in the Richter scale) and the subsequent Tsunami caused an estimated 500 deaths (Gueri et al). Popayan was almost totally destroyed by an earthquake of 5.3 magnitude in which over 100 people died (Gueri and Alzate).

Sign in / Sign up

Export Citation Format

Share Document