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Response of Different Potato Genotypes to Drought Stress

Author

Listed:
  • Muhammad Waqar Nasir

    (Georgikon Campus Keszthely, Institute of Agronomy, Hungarian University of Agriculture and Life Sciences, 2100 Gödöllő, Hungary)

  • Zoltan Toth

    (Georgikon Campus Keszthely, Institute of Agronomy, Hungarian University of Agriculture and Life Sciences, 2100 Gödöllő, Hungary)

Abstract

A pot trial was established to evaluate the response of different potato genotypes to drought stress. Two potato genotypes (Demon and Hopehely) were exposed to two water levels (80% and 50% water holding capacity). The trial was replicated 16 times and 4 replications were harvested at 36 DAS, 54 DAS, 72 DAS, and 90 DAS. The results revealed that drought significantly reduced the growth and plant development of Demon (G1). Hopehely (G2) produced a higher yield in control as well as drought condition. Tuber yield positively correlated with tubers number, and root weight that was significantly higher in Hopehely under both experimental conditions. Hopehely produced a higher number of tubers (18) than Demon whereas Demon produced 11 tubers per plant. Moreover, under drought conditions, the relative water content of leaves and nitrogen content in foliage increased in Hopehely while decreased in Demon. Drought stress caused a 40% reduction in plant height and a 24.3% reduction in the number of leaves in Demon that was significantly higher than the 11% plant height reduction and 9.1% leaf count reduction in Hopehely. It was observed that the morphology of Hopehely (producing dwarf plants, fewer leaves, maintaining water content of leaves, producing more tubers) helped it to be a better drought-tolerant genotype compared to Demon.

Suggested Citation

  • Muhammad Waqar Nasir & Zoltan Toth, 2021. "Response of Different Potato Genotypes to Drought Stress," Agriculture, MDPI, vol. 11(8), pages 1-13, August.
    • Handle: RePEc:gam:jagris:v:11:y:2021:i:8:p:763-:d:612513
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    References listed on IDEAS

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    1. Ahmadi, Seyed Hamid & Andersen, Mathias N. & Plauborg, Finn & Poulsen, Rolf T. & Jensen, Christian R. & Sepaskhah, Ali Reza & Hansen, Søren, 2010. "Effects of irrigation strategies and soils on field-grown potatoes: Gas exchange and xylem [ABA]," Agricultural Water Management, Elsevier, vol. 97(10), pages 1486-1494, October.
    2. Zerihun Kebede & Firew Mekbib & Tesfaye Abebe & Asrat Asfaw, 2019. "Evaluation of Leaf-Water Relation Traits, as Selection Criterion for Developing Drought Resistant Potato (Solanum Tuberosum L.) Genotypes," Review of Plant Studies, Conscientia Beam, vol. 6(1), pages 1-10.
    3. Ahmadi, Seyed Hamid & Andersen, Mathias N. & Plauborg, Finn & Poulsen, Rolf T. & Jensen, Christian R. & Sepaskhah, Ali Reza & Hansen, Søren, 2010. "Effects of irrigation strategies and soils on field grown potatoes: Yield and water productivity," Agricultural Water Management, Elsevier, vol. 97(11), pages 1923-1930, November.
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