scholarly journals Epidemiology and Management of South American Leaf Blight on Rubber in Brazil

2020 ◽  
Author(s):  
Edson Luiz Furtado ◽  
Willian Bucker Moraes ◽  
Waldir Cintra de Jesus Junior ◽  
Breno Benvindo dos Anjos ◽  
Lilianne Gomes da Silva
Keyword(s):  
Leaf Blight ◽  
South American

scholarly journals Erasing the Past: A New Identity for the Damoclean Pathogen Causing South American Leaf Blight of Rubber

PLoS ONE ◽  
2014 ◽  
Vol 9 (8) ◽  
pp. e104750 ◽  
Author(s):  
Braz Tavares da Hora Júnior ◽  
Davi Mesquita de Macedo ◽  
Robert Weingart Barreto ◽  
Harry C. Evans ◽  
Carlos Raimundo Reis Mattos ◽  
...  
Keyword(s):  
Leaf Blight ◽  
South American ◽  
The Past

scholarly journals Development parameters of the latent period as a response of rubber tree resistance to South American leaf blight

2021 ◽  
Vol 47 (2) ◽  
pp. 103-109
Author(s):  
João Alberto Zago Bevenuto ◽  
José Raimundo de Souza Passos ◽  
Edson Luiz Furtado
Keyword(s):  
Latent Period ◽  
Rubber Tree ◽  
Leaf Blight ◽  
Slight Variation ◽  
South American ◽  
Infection Frequency ◽  
Breeding Programs ◽  
Lesion Diameter ◽  
Complete Resistance ◽  
Traditional Breeding

ABSTRACT The major phytosanitary problem for rubber tree cultivation in Brazil is the disease known as South American leaf blight, caused by the fungus Microcyclus ulei. Its symptoms manifest in young leaves and cause intense defoliation, resulting in reduced latex production and even the death of susceptible plants. Thus, this disease consists in a constant threat to East Asian plantations. As worldwide traditional breeding programs have evolved, interspecific hybrid clones have currently been used for planting. They are more productive and show better resistance to pathogens. However, traditional breeding programs have not led to significant progress in resistance to South American leaf blight since the selection is directed to clones with complete resistance. In this pathosystem, horizontal or partial resistance (HR) and vertical or complete resistance (VR) can act simultaneously, evidencing their complexity and difficult quantification. This study aimed to: characterize the foliar lesion type in Hevea sp. X M. ulei pathosystem; verify the clonal susceptibility to pathogens; analyze the infection frequency for resistance quantification in Hevea sp. x M. ulei pathosystem, and recommend differentiating rubber tree clones to quantify M. ulei races in Brazil. The monocyclic parameters (latent period and lesion diameter) are applicable for resistance quantification in Hevea sp. x M. ulei pathosystem. Latent period had slight variation among clones. Lesion diameter had wide variation among clones and was a discriminating parameter for horizontal resistance and vertical resistance.

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 Role of ascospores and conidia in the initiation and spread of South American leaf blight in a rubber tree plantation

2013 ◽  
Vol 63 (3) ◽  
pp. 510-518 ◽  
Author(s):  
J. Guyot ◽  
V. Condina ◽  
F. Doaré ◽  
C. Cilas ◽  
I. Sache
Keyword(s):  
Rubber Tree ◽  
Leaf Blight ◽  
South American ◽  
Tree Plantation

scholarly journals Bayesian random regression for genetic evaluation of South American leaf blight in rubber trees

2017 ◽  
Vol 48 ◽  
Author(s):  
Victor Javier Cevallos Sandoval ◽  
Fabyano Fonseca Silva ◽  
Marcos Deon Vilela de Resende ◽  
Leandro Roberto de Macedo ◽  
Paulo Roberto Cecon
Keyword(s):  
Genetic Evaluation ◽  
Leaf Blight ◽  
Random Regression ◽  
South American
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