TY - CHAP
T1 - Exploration and collection of Quinoa's wild ancestor in Argentina
AU - Curti, Ramiro N.
AU - Ortega-Baes, Pablo
AU - Sajama, Jesús
AU - Jarvis, David
AU - Jellen, Eric
AU - Tester, Mark A.
AU - Bertero, Daniel
N1 - KAUST Repository Item: Exported on 2023-06-06
Acknowledged KAUST grant number(s): OSR-2016-CRG5-2966
Acknowledgements: The authors thank Ale Lavih who assisted with the English version of the manuscript and Gordon Wellman (KAUST University) for suggestions about graphs. The C. hircinum collection trip was supported by grant OSR-2016-CRG5-2966 from KAUST University.
PY - 2023/2/28
Y1 - 2023/2/28
N2 - In this paper we tested the performance of the Species Distribution Models (SDMs) to provide reliable guidelines for planning a collection mission for quinoa's wild ancestor, Chenopodium hircinum, across Argentina. A model was constructed by combining a prediction of the species' geographic distribution based on biocli-matic variables and herbarium specimen records. Annual temperature and precipi-tation seasonality, and mean temperature of the wettest quarter were the bioclimatic variables with the highest mean contribution to the model. Northwest and Central Argentina were the regions predicted with the highest habitat suitability. Then, SDMs predictions were tested by conducting a field-collection trip during February 2017 to previously unsampled localities. In each locality we determined whether or not C. hircinum was present. The model performed relatively poorly, as a significant number of collected populations came from localities with a low estimated proba-bility of occurrence. On the other hand, the Humid Pampas, a region with abundant previous reports, yielded just one sample. This result is relevant for the development of new SDMs to plan subsequent field-collection trips for C. hircinum and points to further improvement of these models based on information gathered here. The field-collection trip produced 59 samples of C. hircinum populations covering a wide range of contrasting environments in terms of latitude, elevation, temperature and precip-itation regimes. Moreover, a large number of collected populations came from Dry Chaco and High Monte ecoregions, which are very hot environments with maximum temperatures often higher than 25 °C during C. hircinum's growing season (spring- summer). A comparative analysis of adaptability ranges between quinoa cultivars from the whole range of the species distribution and collected wild C. hircinum populations from Argentina reveals that quinoa's wild ancestor explores a hotter range and suggests it can increase quinoa's adaptation range and yield stability by providing new allelic variation to breeding programs.
AB - In this paper we tested the performance of the Species Distribution Models (SDMs) to provide reliable guidelines for planning a collection mission for quinoa's wild ancestor, Chenopodium hircinum, across Argentina. A model was constructed by combining a prediction of the species' geographic distribution based on biocli-matic variables and herbarium specimen records. Annual temperature and precipi-tation seasonality, and mean temperature of the wettest quarter were the bioclimatic variables with the highest mean contribution to the model. Northwest and Central Argentina were the regions predicted with the highest habitat suitability. Then, SDMs predictions were tested by conducting a field-collection trip during February 2017 to previously unsampled localities. In each locality we determined whether or not C. hircinum was present. The model performed relatively poorly, as a significant number of collected populations came from localities with a low estimated proba-bility of occurrence. On the other hand, the Humid Pampas, a region with abundant previous reports, yielded just one sample. This result is relevant for the development of new SDMs to plan subsequent field-collection trips for C. hircinum and points to further improvement of these models based on information gathered here. The field-collection trip produced 59 samples of C. hircinum populations covering a wide range of contrasting environments in terms of latitude, elevation, temperature and precip-itation regimes. Moreover, a large number of collected populations came from Dry Chaco and High Monte ecoregions, which are very hot environments with maximum temperatures often higher than 25 °C during C. hircinum's growing season (spring- summer). A comparative analysis of adaptability ranges between quinoa cultivars from the whole range of the species distribution and collected wild C. hircinum populations from Argentina reveals that quinoa's wild ancestor explores a hotter range and suggests it can increase quinoa's adaptation range and yield stability by providing new allelic variation to breeding programs.
UR - http://hdl.handle.net/10754/692354
UR - https://link.springer.com/10.1007/978-3-031-24279-3_8
UR - http://www.scopus.com/inward/record.url?scp=85159840004&partnerID=8YFLogxK
U2 - 10.1007/978-3-031-24279-3_8
DO - 10.1007/978-3-031-24279-3_8
M3 - Chapter
SN - 9783031242793
SP - 167
EP - 178
BT - Biosaline Agriculture as a Climate Change Adaptation for Food Security
PB - Springer International Publishing
ER -