Revealing the Diversity of Introduced Coffea canephora Germplasm in Ecuador: Towards a National Strategy to Improve Robusta

Hemileia vastatrix caused a severe epidemic in Central America in 2012-13. The gradual development of that epidemic on nearly a continental scale suggests that dispersal at different scales played a significant role. Shade has been proposed as a way of reducing uredospore dispersal. The effect of sh...

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Main Authors: Loor Solórzano, Rey Gastón, Bellis, Fabien de, Leroy, Thierry, Plaza, Luis, Guerrero, Hilton, Subía G., Cristian, Calderón Peña, Esteban Darío, Fernández A., Fabián, Garzón, Iván, López, Diana, Vera, Danilo
Format: Artículos
Language:en
Published: 2018
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Online Access:http://repositorio.iniap.gob.ec/handle/41000/5067
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spelling ir-:41000-50672018-08-03T13:46:01Z Revealing the Diversity of Introduced Coffea canephora Germplasm in Ecuador: Towards a National Strategy to Improve Robusta The Scientific World Journal : 1-13 Loor Solórzano, Rey Gastón Bellis, Fabien de Leroy, Thierry Plaza, Luis Guerrero, Hilton Subía G., Cristian Calderón Peña, Esteban Darío Fernández A., Fabián Garzón, Iván López, Diana Vera, Danilo CAFÉ COFFEA ROYA DEL CAFE AGROFORESTERÍA COSTA RICA Hemileia vastatrix caused a severe epidemic in Central America in 2012-13. The gradual development of that epidemic on nearly a continental scale suggests that dispersal at different scales played a significant role. Shade has been proposed as a way of reducing uredospore dispersal. The effect of shade (two strata: Erythrina poeppigiaiia below and Chloroleucon eurycyclum above) and full sun on H. vastatrix dispersal was studied with Burkard traps in relation to meteorological records. Annual and daily patterns of dispersal were observed, with peaks of uredospore capture obtained during wet seasons and in the early afternoon. A maximum of 464 uredospores in 1 day (in 14.4 m3 of air) was recorded in October 2014. Interactions between shade/full sun and meteorological conditions were found. Rainfall, possibly intercepted by tree cover and redistributed by raindrops of higher kinetic energy, was the main driver of uredospore dis-persal under shade. Wind gusts reversed this effect, probably by inhibiting water accumulation on leaves. Wind gusts also promoted dispersal under dry conditions in full sun, whereas they had no effect under shaded conditions, probably because the canopy blocked the wind. Our results indicate the importance of managing shade cover differentially in rainy versus dry periods to control the dispersal of airborne H. vastatrix uredospores. 2018-08-02T13:31:52Z 2018-08-02T13:31:52Z 2017 Revista Artículo *EC-INIAP-BEECA-NM. Joya de los Sachas (The Scientific World Journal : 1-13.2017) http://repositorio.iniap.gob.ec/handle/41000/5067 en Atribución-NoComercial-SinDerivadas 3.0 Ecuador http://creativecommons.org/licenses/by-nc-nd/3.0/ec/ p. 1-13 application/pdf E. E. Central Amazónica
institution INIAP
collection Repositorio INIAP
biblioteca Biblioteca INIAP
language en
format Artículos
topic CAFÉ
COFFEA
ROYA DEL CAFE
AGROFORESTERÍA
COSTA RICA
spellingShingle CAFÉ
COFFEA
ROYA DEL CAFE
AGROFORESTERÍA
COSTA RICA
Loor Solórzano, Rey Gastón
Bellis, Fabien de
Leroy, Thierry
Plaza, Luis
Guerrero, Hilton
Subía G., Cristian
Calderón Peña, Esteban Darío
Fernández A., Fabián
Garzón, Iván
López, Diana
Vera, Danilo
Revealing the Diversity of Introduced Coffea canephora Germplasm in Ecuador: Towards a National Strategy to Improve Robusta
description Hemileia vastatrix caused a severe epidemic in Central America in 2012-13. The gradual development of that epidemic on nearly a continental scale suggests that dispersal at different scales played a significant role. Shade has been proposed as a way of reducing uredospore dispersal. The effect of shade (two strata: Erythrina poeppigiaiia below and Chloroleucon eurycyclum above) and full sun on H. vastatrix dispersal was studied with Burkard traps in relation to meteorological records. Annual and daily patterns of dispersal were observed, with peaks of uredospore capture obtained during wet seasons and in the early afternoon. A maximum of 464 uredospores in 1 day (in 14.4 m3 of air) was recorded in October 2014. Interactions between shade/full sun and meteorological conditions were found. Rainfall, possibly intercepted by tree cover and redistributed by raindrops of higher kinetic energy, was the main driver of uredospore dis-persal under shade. Wind gusts reversed this effect, probably by inhibiting water accumulation on leaves. Wind gusts also promoted dispersal under dry conditions in full sun, whereas they had no effect under shaded conditions, probably because the canopy blocked the wind. Our results indicate the importance of managing shade cover differentially in rainy versus dry periods to control the dispersal of airborne H. vastatrix uredospores.
author Loor Solórzano, Rey Gastón
Bellis, Fabien de
Leroy, Thierry
Plaza, Luis
Guerrero, Hilton
Subía G., Cristian
Calderón Peña, Esteban Darío
Fernández A., Fabián
Garzón, Iván
López, Diana
Vera, Danilo
author_facet Loor Solórzano, Rey Gastón
Bellis, Fabien de
Leroy, Thierry
Plaza, Luis
Guerrero, Hilton
Subía G., Cristian
Calderón Peña, Esteban Darío
Fernández A., Fabián
Garzón, Iván
López, Diana
Vera, Danilo
author_sort Loor Solórzano, Rey Gastón
title Revealing the Diversity of Introduced Coffea canephora Germplasm in Ecuador: Towards a National Strategy to Improve Robusta
title_short Revealing the Diversity of Introduced Coffea canephora Germplasm in Ecuador: Towards a National Strategy to Improve Robusta
title_full Revealing the Diversity of Introduced Coffea canephora Germplasm in Ecuador: Towards a National Strategy to Improve Robusta
title_fullStr Revealing the Diversity of Introduced Coffea canephora Germplasm in Ecuador: Towards a National Strategy to Improve Robusta
title_full_unstemmed Revealing the Diversity of Introduced Coffea canephora Germplasm in Ecuador: Towards a National Strategy to Improve Robusta
title_sort revealing the diversity of introduced coffea canephora germplasm in ecuador: towards a national strategy to improve robusta
publishDate 2018
url http://repositorio.iniap.gob.ec/handle/41000/5067
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score 11,871979