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Physiological Screening for Drought Tolerance Traits in Vegetable Amaranth ( Amaranthus tricolor ) Germplasm

Author

Listed:
  • Norain Jamalluddin

    (Future Food Beacon, School of Biosciences, University of Nottingham Malaysia, Jalan Broga, Semenyih 43500, Selangor, Malaysia)

  • Festo J. Massawe

    (Future Food Beacon, School of Biosciences, University of Nottingham Malaysia, Jalan Broga, Semenyih 43500, Selangor, Malaysia)

  • Sean Mayes

    (Future Food Beacon, School of Biosciences, University of Nottingham Malaysia, Jalan Broga, Semenyih 43500, Selangor, Malaysia
    Plant and Crop Sciences, Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough LE12 5RD, UK
    Crops for the Future (UK) CIC, NIAB, 93 Lawrence Weaver Road, Cambridge CB3 0LE, UK)

  • Wai Kuan Ho

    (Future Food Beacon, School of Biosciences, University of Nottingham Malaysia, Jalan Broga, Semenyih 43500, Selangor, Malaysia
    Crops for the Future (UK) CIC, NIAB, 93 Lawrence Weaver Road, Cambridge CB3 0LE, UK)

  • Ajit Singh

    (Future Food Beacon, School of Biosciences, University of Nottingham Malaysia, Jalan Broga, Semenyih 43500, Selangor, Malaysia)

  • Rachael C. Symonds

    (School of Biological and Environmental Sciences, Liverpool John Moores University, Byrom St, Liverpool L3 3AF, UK)

Abstract

Amaranth ( Amaranthus tricolor ), an underutilized climate smart crop, is highly nutritious and possesses diverse drought tolerance traits, making it an ideal crop to thrive in a rapidly changing climate. Despite considerable studies on the growth and physiology of plants subjected to drought stress, a precise trait phenotyping strategy for drought tolerance in vegetable amaranth is still not well documented. In this study, two drought screening trials were carried out on 44 A. tricolor accessions in order to identify potential drought-tolerant A. tricolor germplasm and to discern their physiological responses to drought stress. The findings revealed that a change in stem biomass was most likely the main mechanism of drought adaptation for stress recovery, and dark-adapted quantum yield (Fv/Fm) could be a useful parameter for identifying drought tolerance in amaranth. Three drought tolerance indices: geometric mean productivity (GMP), mean productivity (MP) and stress tolerance index (STI) identified eight drought-tolerant accessions with stable performance across the two screening trials. The highly significant genotypic differences observed in several physiological traits among the amaranth accessions indicate that the amaranth panel used in this study could be a rich source of genetic diversity for breeding purposes for drought tolerance traits.

Suggested Citation

  • Norain Jamalluddin & Festo J. Massawe & Sean Mayes & Wai Kuan Ho & Ajit Singh & Rachael C. Symonds, 2021. "Physiological Screening for Drought Tolerance Traits in Vegetable Amaranth ( Amaranthus tricolor ) Germplasm," Agriculture, MDPI, vol. 11(10), pages 1-21, October.
    • Handle: RePEc:gam:jagris:v:11:y:2021:i:10:p:994-:d:654789
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    References listed on IDEAS

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    1. Louis J. Irving, 2015. "Carbon Assimilation, Biomass Partitioning and Productivity in Grasses," Agriculture, MDPI, vol. 5(4), pages 1-19, November.
    2. Leylufer Aliyeva & 1В.М.Аббасов, 1Э.К.Гасанов, 1Л.И.Алиева, 1,2С.А.Мамедханова ,1 Е.Д.Агазаде,, 2014. "Получение Консервационных Жидкостей На Основе Турбинного Масла ,Солей Нефтяных Кислот И N-Производных Высших Олефинов," 2nd International Conference on Energy, Regional Integration and Socio-Economic Development 7481, EcoMod.
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    Cited by:

    1. Yuan-Kai Tu & Chin-En Kuo & Shih-Lun Fang & Han-Wei Chen & Ming-Kun Chi & Min-Hwi Yao & Bo-Jein Kuo, 2022. "A 1D-SP-Net to Determine Early Drought Stress Status of Tomato ( Solanum lycopersicum ) with Imbalanced Vis/NIR Spectroscopy Data," Agriculture, MDPI, vol. 12(2), pages 1-17, February.

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