Chlorophyll Fluorescence and Drought Tolerance in a Mapping Population of Durum Wheat

Autor: Larouk Chafia, Gabon Fatima, Kehel Zakaria, Djekoun Abdelhamid, Nachit Miloudi, Amri Ahmed
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Contemporary Agriculture, Vol 70, Iss 3-4, Pp 123-134 (2021)
Druh dokumentu: article
ISSN: 2466-4774
DOI: 10.2478/contagri-2021-0018
Popis: This study was conducted to compare and estimate the genetic variability among durum wheat lines in response to drought according to their grain yields and physiological traits. The use of fluorescence parameters as drought selection criteria for durum wheat was investigated in a population of 249 recombinant inbred lines (RILs) derived from a cross between two cultivars of durum wheat: ‘Svevo’ and ‘Kofa’. The durum wheat RILs considered were analyzed to determine the relationship between their grain yields and chlorophyll fluorescence parameters at the grain filling stage under drought stress (rainfed) and supplemental irrigation (irrigated) conditions during the 2004 and 2005 seasons at the ICARDA center. The results obtained show that the durum wheat line performance was influenced by drought stress, indicating significant differences between the grain yields and fluorescence parameters recorded under drought rainfed (RF) and irrigation (IR) conditions. Significant differences between the experimental groups of durum wheat RILs (P
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