Managing potato biodiversity to cope with frost risk in the high Andes: a modeling perspective.

Austral summer frosts in the Andean highlands are ubiquitous throughout the crop cycle, causing yield losses. In spite of the existing warming trend, climate change models forecast high variability, including freezing temperatures. As the potato center of origin, the region has a rich biodiversity w...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Bruno Condori, Robert J Hijmans, Jean Francois Ledent, Roberto Quiroz
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2014
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/222651ff39574c1abe6a2f47a13d87e7
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:222651ff39574c1abe6a2f47a13d87e7
record_format	dspace
spelling	oai:doaj.org-article:222651ff39574c1abe6a2f47a13d87e72021-11-18T08:34:55ZManaging potato biodiversity to cope with frost risk in the high Andes: a modeling perspective.1932-620310.1371/journal.pone.0081510https://doaj.org/article/222651ff39574c1abe6a2f47a13d87e72014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24497912/?tool=EBIhttps://doaj.org/toc/1932-6203Austral summer frosts in the Andean highlands are ubiquitous throughout the crop cycle, causing yield losses. In spite of the existing warming trend, climate change models forecast high variability, including freezing temperatures. As the potato center of origin, the region has a rich biodiversity which includes a set of frost resistant genotypes. Four contrasting potato genotypes--representing genetic variability--were considered in the present study: two species of frost resistant native potatoes (the bitter Solanum juzepczukii, var. Luki, and the non-bitter Solanum ajanhuiri, var. Ajanhuiri) and two commercial frost susceptible genotypes (Solanum tuberosum ssp. tuberosum var. Alpha and Solanum tuberosum ssp. andigenum var. Gendarme). The objective of the study was to conduct a comparative growth analysis of four genotypes and modeling their agronomic response under frost events. It included assessing their performance under Andean contrasting agroecological conditions. Independent subsets of data from four field experiments were used to parameterize, calibrate and validate a potato growth model. The validated model was used to ascertain the importance of biodiversity, represented by the four genotypes tested, as constituents of germplasm mixtures in single plots used by local farmers, a coping strategy in the face of climate variability. Also scenarios with a frost routine incorporated in the model were constructed. Luki and Ajanhuiri were the most frost resistant varieties whereas Alpha was the most susceptible. Luki and Ajanhuiri, as monoculture, outperformed the yield obtained with the mixtures under severe frosts. These results highlight the role played by local frost tolerant varieties, and featured the management importance--e.g. clean seed, strategic watering--to attain the yields reported in our experiments. The mixtures of local and introduced potatoes can thus not only provide the products demanded by the markets but also reduce the impact of frosts and thus the vulnerability of the system to abiotic stressors.Bruno CondoriRobert J HijmansJean Francois LedentRoberto QuirozPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 1, p e81510 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Bruno Condori Robert J Hijmans Jean Francois Ledent Roberto Quiroz Managing potato biodiversity to cope with frost risk in the high Andes: a modeling perspective.
description	Austral summer frosts in the Andean highlands are ubiquitous throughout the crop cycle, causing yield losses. In spite of the existing warming trend, climate change models forecast high variability, including freezing temperatures. As the potato center of origin, the region has a rich biodiversity which includes a set of frost resistant genotypes. Four contrasting potato genotypes--representing genetic variability--were considered in the present study: two species of frost resistant native potatoes (the bitter Solanum juzepczukii, var. Luki, and the non-bitter Solanum ajanhuiri, var. Ajanhuiri) and two commercial frost susceptible genotypes (Solanum tuberosum ssp. tuberosum var. Alpha and Solanum tuberosum ssp. andigenum var. Gendarme). The objective of the study was to conduct a comparative growth analysis of four genotypes and modeling their agronomic response under frost events. It included assessing their performance under Andean contrasting agroecological conditions. Independent subsets of data from four field experiments were used to parameterize, calibrate and validate a potato growth model. The validated model was used to ascertain the importance of biodiversity, represented by the four genotypes tested, as constituents of germplasm mixtures in single plots used by local farmers, a coping strategy in the face of climate variability. Also scenarios with a frost routine incorporated in the model were constructed. Luki and Ajanhuiri were the most frost resistant varieties whereas Alpha was the most susceptible. Luki and Ajanhuiri, as monoculture, outperformed the yield obtained with the mixtures under severe frosts. These results highlight the role played by local frost tolerant varieties, and featured the management importance--e.g. clean seed, strategic watering--to attain the yields reported in our experiments. The mixtures of local and introduced potatoes can thus not only provide the products demanded by the markets but also reduce the impact of frosts and thus the vulnerability of the system to abiotic stressors.
format	article
author	Bruno Condori Robert J Hijmans Jean Francois Ledent Roberto Quiroz
author_facet	Bruno Condori Robert J Hijmans Jean Francois Ledent Roberto Quiroz
author_sort	Bruno Condori
title	Managing potato biodiversity to cope with frost risk in the high Andes: a modeling perspective.
title_short	Managing potato biodiversity to cope with frost risk in the high Andes: a modeling perspective.
title_full	Managing potato biodiversity to cope with frost risk in the high Andes: a modeling perspective.
title_fullStr	Managing potato biodiversity to cope with frost risk in the high Andes: a modeling perspective.
title_full_unstemmed	Managing potato biodiversity to cope with frost risk in the high Andes: a modeling perspective.
title_sort	managing potato biodiversity to cope with frost risk in the high andes: a modeling perspective.
publisher	Public Library of Science (PLoS)
publishDate	2014
url	https://doaj.org/article/222651ff39574c1abe6a2f47a13d87e7
work_keys_str_mv	AT brunocondori managingpotatobiodiversitytocopewithfrostriskinthehighandesamodelingperspective AT robertjhijmans managingpotatobiodiversitytocopewithfrostriskinthehighandesamodelingperspective AT jeanfrancoisledent managingpotatobiodiversitytocopewithfrostriskinthehighandesamodelingperspective AT robertoquiroz managingpotatobiodiversitytocopewithfrostriskinthehighandesamodelingperspective
_version_	1718421607556317184

Managing potato biodiversity to cope with frost risk in the high Andes: a modeling perspective.

Ejemplares similares