Characterizing bread wheat genotypes of Pakistani origin for grain zinc biofortification potential

Abdul Rehman, Muhammad Farooq, Ahmad Nawaz, Abdullah M. Al-Sadi, Khalid S. Al-Hashmi, Faisal Nadeem, Aman Ullah

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

BACKGROUND: Zinc (Zn) is essential for all life forms and its deficiency is a major issue of malnutrition in humans. This study was carried out to characterize 28 wheat genotypes of Pakistani origin for grain zinc biofortification potential, genetic diversity and relatedness. RESULTS: There was low genetic differentiation among the tested genotypes. However, they differed greatly in yield-related traits, grain mineral (Zn, calcium (Ca) and protein) concentrations and Zn bioavailability. Zinc application increased the concentration of Zn in wheat grain (32.1%), embryo (19.8%), aleurone (47%) and endosperm (23.7%), with an increase in bioavailable Zn (22.2%) and a reduction in phytate concentration (6.8%). Application of Zn also enhanced grain protein and Ca concentrations. Among wheat genotypes, Blue Silver had the highest concentration of Zn in grain, embryo, aleurone and endosperm, with high bioavailable Zn, while Kohinoor-83 had low phytate concentration. CONCLUSION: Wheat genotypes of Pakistan are genetically less diverse owing to continuous focus on the development of high-yielding varieties only. Therefore genetically diverse wheat genotypes with high endospermic Zn concentration and better grain yield should be used in breeding programs approaches, aiming at improving Zn bioavailability.

Original languageEnglish
JournalJournal of the Science of Food and Agriculture
DOIs
Publication statusAccepted/In press - Jan 1 2018

Fingerprint

biofortification
Bread
Triticum
Zinc
zinc
Genotype
wheat
genotype
Endosperm
Phytic Acid
phytic acid
Biological Availability
endosperm
Biofortification
bioavailability
embryo (animal)
Embryonic Structures
Calcium
calcium
genetic variation

Keywords

  • Bioavailability
  • Bread wheat
  • Genetic diversity
  • Phytate

ASJC Scopus subject areas

  • Biotechnology
  • Food Science
  • Agronomy and Crop Science
  • Nutrition and Dietetics

Cite this

Characterizing bread wheat genotypes of Pakistani origin for grain zinc biofortification potential. / Rehman, Abdul; Farooq, Muhammad; Nawaz, Ahmad; Al-Sadi, Abdullah M.; Al-Hashmi, Khalid S.; Nadeem, Faisal; Ullah, Aman.

In: Journal of the Science of Food and Agriculture, 01.01.2018.

Research output: Contribution to journalArticle

Rehman, Abdul ; Farooq, Muhammad ; Nawaz, Ahmad ; Al-Sadi, Abdullah M. ; Al-Hashmi, Khalid S. ; Nadeem, Faisal ; Ullah, Aman. / Characterizing bread wheat genotypes of Pakistani origin for grain zinc biofortification potential. In: Journal of the Science of Food and Agriculture. 2018.
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abstract = "BACKGROUND: Zinc (Zn) is essential for all life forms and its deficiency is a major issue of malnutrition in humans. This study was carried out to characterize 28 wheat genotypes of Pakistani origin for grain zinc biofortification potential, genetic diversity and relatedness. RESULTS: There was low genetic differentiation among the tested genotypes. However, they differed greatly in yield-related traits, grain mineral (Zn, calcium (Ca) and protein) concentrations and Zn bioavailability. Zinc application increased the concentration of Zn in wheat grain (32.1{\%}), embryo (19.8{\%}), aleurone (47{\%}) and endosperm (23.7{\%}), with an increase in bioavailable Zn (22.2{\%}) and a reduction in phytate concentration (6.8{\%}). Application of Zn also enhanced grain protein and Ca concentrations. Among wheat genotypes, Blue Silver had the highest concentration of Zn in grain, embryo, aleurone and endosperm, with high bioavailable Zn, while Kohinoor-83 had low phytate concentration. CONCLUSION: Wheat genotypes of Pakistan are genetically less diverse owing to continuous focus on the development of high-yielding varieties only. Therefore genetically diverse wheat genotypes with high endospermic Zn concentration and better grain yield should be used in breeding programs approaches, aiming at improving Zn bioavailability.",
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AB - BACKGROUND: Zinc (Zn) is essential for all life forms and its deficiency is a major issue of malnutrition in humans. This study was carried out to characterize 28 wheat genotypes of Pakistani origin for grain zinc biofortification potential, genetic diversity and relatedness. RESULTS: There was low genetic differentiation among the tested genotypes. However, they differed greatly in yield-related traits, grain mineral (Zn, calcium (Ca) and protein) concentrations and Zn bioavailability. Zinc application increased the concentration of Zn in wheat grain (32.1%), embryo (19.8%), aleurone (47%) and endosperm (23.7%), with an increase in bioavailable Zn (22.2%) and a reduction in phytate concentration (6.8%). Application of Zn also enhanced grain protein and Ca concentrations. Among wheat genotypes, Blue Silver had the highest concentration of Zn in grain, embryo, aleurone and endosperm, with high bioavailable Zn, while Kohinoor-83 had low phytate concentration. CONCLUSION: Wheat genotypes of Pakistan are genetically less diverse owing to continuous focus on the development of high-yielding varieties only. Therefore genetically diverse wheat genotypes with high endospermic Zn concentration and better grain yield should be used in breeding programs approaches, aiming at improving Zn bioavailability.

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