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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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 |
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CAFÉ COFFEA ROYA DEL CAFE AGROFORESTERÍA COSTA RICA |
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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 |
_version_ |
1635512263684128768 |
score |
11,871979 |