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© 2022 by the authors. 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 (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.

Abstract

This study assessed the variations in grain yield (GY) and protein content (PC) within two commercial durum wheat cultivars (Svevo and Maestrale) and evaluated their responses to intra-cultivar selection for both traits. We investigated whether the variations are exploitable and could result in concurrent GY and PC upgrading. The experiments were conducted in the IPBGR, Thessaloniki, Greece (2018–2020). The first year included two identical honeycomb design trials under ultra-low plant density (ULD) where the divergent selection was applied based on single plant yield and protein content. In the second year, progeny evaluation under typical crop density (TCD) for GY and PC occurred in a randomized complete block (RCB) and with three replications for each cultivar selected line. This revealed considerable variation within already improved commercial cultivars. Single-plant selection for GY and PC simultaneously resulted in: (a) one high-yielding line that significantly outperformed the original cultivar Svevo while maintaining high PC, and (b) two high-grain PC lines that outperformed the original cultivar Maestrale significantly while maintaining high GY. ULD allowed efficient selection for GY and PC simultaneously within narrow gene pools by maximizing phenotypic expression and differentiation among individual plants.

Details

Title
Utilization of Intra-Cultivar Variation for Grain Yield and Protein Content within Durum Wheat Cultivars
Author
Ninou, Elissavet 1   VIAFID ORCID Logo  ; Mylonas, Ioannis 2 ; Karagianni, Ioulia 3 ; Michailidou, Sonia 3 ; Tsivelikas, Athanasios 4 ; Sistanis, Iosif 3 ; Avdikos, Ilias 1 ; Korpetis, Evangelos 2   VIAFID ORCID Logo  ; Papathanasiou, Fokion 3   VIAFID ORCID Logo 

 Department of Agriculture, International Hellenic University, Sindos, 57400 Thessaloniki, Greece; [email protected] (E.N.); [email protected] (I.A.) 
 Hellenic Agricultural Organization-Dimitra, Institute of Plant Breeding and Genetic Resources, Thermi, 57001 Thessaloniki, Greece; [email protected] 
 Department of Agriculture, University of Western Macedonia, 53100 Florina, Greece; [email protected] (I.K.); [email protected] (S.M.); [email protected] (I.S.) 
 International Center for Agricultural Research in the Dry Areas (ICARDA), Al-Irfane, Rabat 10090, Morocco; [email protected] 
First page
661
Publication year
2022
Publication date
2022
Publisher
MDPI AG
e-ISSN
20770472
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2670044595
Copyright
© 2022 by the authors. 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 (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.