Translational Genomics for Wheat Quality Improvement

A special issue of Agronomy (ISSN 2073-4395). This special issue belongs to the section "Crop Breeding and Genetics".

Deadline for manuscript submissions: closed (25 March 2021) | Viewed by 5014

Special Issue Editors

Department of Plant Sciences, North Dakota State University, Fargo, ND, USA
Interests: plant genetics; plant breeding; application of genomics for crop improvement

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Guest Editor
Agriculture and Agri-Food Canada, Manitoba, Canada
Interests: plant genetics; plant breeding; plant physiology; molecular biology; plant genomics

Special Issue Information

Dear Colleagues,

Wheat, the most widely grown crop in the world, plays a major role in acheieving food and nutritional security. In recent times, to meet requirements of domestic and export markets, end use quality has become one of the major targets of various wheat breeding programs around the world. However, the direct estimation of several quality traits (e.g., bread-making quality) through full-scale tests is expensive, time-consuming and requires a large amount of grain, which is usually not available in early breeding generation, resulting in screening of only a limited number of advanced “candidate” lines.

The application of modern breeding tools may help in accurately estimating the end use performance and other quality characteristics and potential of individual wheat lines in early generations without conducting direct tests for quality. 

Thus, modern breeding tools based on plant genomics research have a major role to play in speeding up the genetic gain for wheat quality through many ways, including discovery of desirable alleles/genetic variatiants and increasing the efficiency of plant breeding. Therefore, in this issue, we welcome research papers and review articles which focus on developing genetic resources and applying translational genomics for improvement of wheat quality parameters.

Dr. Ajay Kumar
Dr. Santosh Kumar
Guest Editors

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Keywords

  • genomic selection
  • genome wide association mapping
  • marker assisted selection
  • quantitative trait loci (QTL) mapping, wheat quality

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Published Papers (1 paper)

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Research

14 pages, 1389 KiB  
Article
Field Screening of Wheat Advanced Lines for Salinity Tolerance
by Ehab S. A. Moustafa, Mohamed M. A. Ali, Mohamed M. Kamara, Mohamed F. Awad, Abdallah A. Hassanin and Elsayed Mansour
Agronomy 2021, 11(2), 281; https://doi.org/10.3390/agronomy11020281 - 3 Feb 2021
Cited by 38 | Viewed by 4505
Abstract
Salinity in soil or irrigation water requires developing genetically salt-tolerant genotypes, especially in arid regions. Developing salt-tolerant and high-yielding wheat genotypes has become more urgent in particular with continuing global population growth and abrupt climate changes. The current study aimed at investigating the [...] Read more.
Salinity in soil or irrigation water requires developing genetically salt-tolerant genotypes, especially in arid regions. Developing salt-tolerant and high-yielding wheat genotypes has become more urgent in particular with continuing global population growth and abrupt climate changes. The current study aimed at investigating the genetic variability of new breeding lines in three advanced generations F6–F8 under salinity stress. The evaluated advanced lines were derived through accurate pedigree selection under actual saline field conditions (7.74 dS/m) and using saline water in irrigation (8.35 dS/m). Ninety-four F6 lines were evaluated in 2017–2018 and reduced by selection to thirty-seven F7 lines in 2018–2019 and afterward to thirty-four F8 lines in 2019–2020 based on grain yield and related traits compared with adopted check cultivars. Significant genetic variability was detected for all evaluated agronomic traits across generations in the salt-stressed field. The elite F8 breeding lines displayed higher performance than the adopted check cultivars. These lines were classified based on yield index into four groups using hierarchical clustering ranging from highly salt-tolerant to slightly salt-tolerant genotypes, which efficiently enhance the narrow genetic pool of salt-tolerance. The detected response to selection and high to intermediate broad-sense heritability for measured traits displayed their potentiality to be utilized through advanced generations under salinity stress for identifying salt-tolerant breeding lines. Full article
(This article belongs to the Special Issue Translational Genomics for Wheat Quality Improvement)
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