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DIFFERENTIAL BEHAVIOR TO DROUGHT OFTWO ELITE POTATO CULTIVARS GROWNIN SOUTHEASTERN PAMPEAN REGION OF ARGENTINAINA

Indian Agricultural Research Journals

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Title DIFFERENTIAL BEHAVIOR TO DROUGHT OFTWO ELITE POTATO CULTIVARS GROWNIN SOUTHEASTERN PAMPEAN REGION OF ARGENTINAINA
 
Creator Tagliotti, Martin
Giuliano, Sergio
Puricelli, Marino
Zambelli, Andrés
Bedogni, Maria Cecilia
 
Subject drought tolerance
Spunta
Newen INTA
drought stress indices
proline content
 
Description Potatoes production requires large inputs of water for which development of drought tolerant cultivarsis particularly relevant to ensure or even increase its productivity. Two elite cultivars, Newen INTA and Spunta, wereevaluated in the field under contrasting water regimes. After drought treatment, the yield of marketable tubers decreased53% in Spunta and 22% in Newen INTA while the number of marketable tubers decreased 32% in both cultivars. Yield oftuber > 90 mm only decreased in Spunta (62.81%, p < 0.05). Newen INTA showed a greater reduction in the shoot and rootdry biomass than Spunta, while the root/shoot ratio was higher in Newen INTA. Proline content increased 61% in bothcultivars under drought treatment. Drought tolerance indices (GMP and DTI) were higher in Newen INTA, and the droughtsusceptibility index was higher in Spunta. Proline content was correlated with root dry biomass and the marketable tubernumber in both cultivars. Dry root biomass correlated with the yield of marketable tubers and the number of marketabletubers. In drought conditions, Newen INTA showed greater tolerance to drought. Therefore, Newen INTA emerges as auseful genotype to contribute to increasing crop productivity in areas subject to water stress.
 
Publisher Indian Potato Association (IPA)
 
Date 2024-04-04
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
 
Format application/pdf
 
Identifier https://epubs.icar.org.in/index.php/PotatoJ/article/view/145268
 
Source Potato Journal; Vol. 50 No. 2 (2023): Potato Journal
0973-5909
0970-8235
 
Language eng
 
Relation https://epubs.icar.org.in/index.php/PotatoJ/article/view/145268/54279
 
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