Cargando…

Physiological, Biochemical and Yield-Component Responses of Solanum tuberosum L. Group Phureja Genotypes to a Water Deficit

Water deficits are the major constraint in some potato-growing areas of the world. The effect is most severe at the tuberization stage, resulting in lower yield. Therefore, an assessment of genetic and phenotypic variations resulting from water deficits in Colombia germplasm is required to accelerat...

Descripción completa

Detalles Bibliográficos
Autores principales: Diaz-Valencia, Paula, Melgarejo, Luz Marina, Arcila, Ivon, Mosquera-Vásquez, Teresa
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8065493/
https://www.ncbi.nlm.nih.gov/pubmed/33801743
http://dx.doi.org/10.3390/plants10040638
_version_ 1783682354417500160
author Diaz-Valencia, Paula
Melgarejo, Luz Marina
Arcila, Ivon
Mosquera-Vásquez, Teresa
author_facet Diaz-Valencia, Paula
Melgarejo, Luz Marina
Arcila, Ivon
Mosquera-Vásquez, Teresa
author_sort Diaz-Valencia, Paula
collection PubMed
description Water deficits are the major constraint in some potato-growing areas of the world. The effect is most severe at the tuberization stage, resulting in lower yield. Therefore, an assessment of genetic and phenotypic variations resulting from water deficits in Colombia germplasm is required to accelerate breeding efforts. Phenotypic variations in response to a water deficit were studied in a collection of Solanum tuberosum Group Phureja. A progressive water deficit experiment on the tuberization stage was undertaken using 104 genotypes belonging to the Working Collection of the Potato Breeding Program at the Universidad Nacional de Colombia. The response to water deficit conditions was assessed with the relative chlorophyll content (CC), maximum quantum efficiency of PSII (F(v)/F(m)), relative water content (RWC), leaf sugar content, tuber number per plant (TN) and tuber fresh weight per plant (TW). Principal Component Analysis (PCA) and cluster analysis were used, and the Drought Tolerance Index (DTI) was calculated for the variables and genotypes. The soluble sugar contents increased significantly under the deficit conditions in the leaves, with a weak correlation with yield under both water treatments. The PCA results revealed that the physiological, biochemical and yield-component variables had broad variation, while the yield-component variables more powerfully distinguished between the tolerant and susceptible genotypes than the physiological and biochemical variables. The PCA and cluster analysis based on the DTI revealed different levels of water deficit tolerance for the 104 genotypes. These results provide a foundation for future research directed at understanding the molecular mechanisms underlying potato tolerance to water deficits.
format Online
Article
Text
id pubmed-8065493
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-80654932021-04-25 Physiological, Biochemical and Yield-Component Responses of Solanum tuberosum L. Group Phureja Genotypes to a Water Deficit Diaz-Valencia, Paula Melgarejo, Luz Marina Arcila, Ivon Mosquera-Vásquez, Teresa Plants (Basel) Article Water deficits are the major constraint in some potato-growing areas of the world. The effect is most severe at the tuberization stage, resulting in lower yield. Therefore, an assessment of genetic and phenotypic variations resulting from water deficits in Colombia germplasm is required to accelerate breeding efforts. Phenotypic variations in response to a water deficit were studied in a collection of Solanum tuberosum Group Phureja. A progressive water deficit experiment on the tuberization stage was undertaken using 104 genotypes belonging to the Working Collection of the Potato Breeding Program at the Universidad Nacional de Colombia. The response to water deficit conditions was assessed with the relative chlorophyll content (CC), maximum quantum efficiency of PSII (F(v)/F(m)), relative water content (RWC), leaf sugar content, tuber number per plant (TN) and tuber fresh weight per plant (TW). Principal Component Analysis (PCA) and cluster analysis were used, and the Drought Tolerance Index (DTI) was calculated for the variables and genotypes. The soluble sugar contents increased significantly under the deficit conditions in the leaves, with a weak correlation with yield under both water treatments. The PCA results revealed that the physiological, biochemical and yield-component variables had broad variation, while the yield-component variables more powerfully distinguished between the tolerant and susceptible genotypes than the physiological and biochemical variables. The PCA and cluster analysis based on the DTI revealed different levels of water deficit tolerance for the 104 genotypes. These results provide a foundation for future research directed at understanding the molecular mechanisms underlying potato tolerance to water deficits. MDPI 2021-03-27 /pmc/articles/PMC8065493/ /pubmed/33801743 http://dx.doi.org/10.3390/plants10040638 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) ).
spellingShingle Article
Diaz-Valencia, Paula
Melgarejo, Luz Marina
Arcila, Ivon
Mosquera-Vásquez, Teresa
Physiological, Biochemical and Yield-Component Responses of Solanum tuberosum L. Group Phureja Genotypes to a Water Deficit
title Physiological, Biochemical and Yield-Component Responses of Solanum tuberosum L. Group Phureja Genotypes to a Water Deficit
title_full Physiological, Biochemical and Yield-Component Responses of Solanum tuberosum L. Group Phureja Genotypes to a Water Deficit
title_fullStr Physiological, Biochemical and Yield-Component Responses of Solanum tuberosum L. Group Phureja Genotypes to a Water Deficit
title_full_unstemmed Physiological, Biochemical and Yield-Component Responses of Solanum tuberosum L. Group Phureja Genotypes to a Water Deficit
title_short Physiological, Biochemical and Yield-Component Responses of Solanum tuberosum L. Group Phureja Genotypes to a Water Deficit
title_sort physiological, biochemical and yield-component responses of solanum tuberosum l. group phureja genotypes to a water deficit
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8065493/
https://www.ncbi.nlm.nih.gov/pubmed/33801743
http://dx.doi.org/10.3390/plants10040638
work_keys_str_mv AT diazvalenciapaula physiologicalbiochemicalandyieldcomponentresponsesofsolanumtuberosumlgroupphurejagenotypestoawaterdeficit
AT melgarejoluzmarina physiologicalbiochemicalandyieldcomponentresponsesofsolanumtuberosumlgroupphurejagenotypestoawaterdeficit
AT arcilaivon physiologicalbiochemicalandyieldcomponentresponsesofsolanumtuberosumlgroupphurejagenotypestoawaterdeficit
AT mosqueravasquezteresa physiologicalbiochemicalandyieldcomponentresponsesofsolanumtuberosumlgroupphurejagenotypestoawaterdeficit