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Effective Treatments for the Successful Establishment of Milkweed ( Calotropis procera L.) under Water Deficit

Author

Listed:
  • Mojtaba Dolatkordestani

    (Department of Ecological Engineering, Faculty of Natural Resources, University of Jiroft, Jiroft 78671-61167, Iran)

  • Mansour Taghvaei

    (Department of Plant Production and Genetics, School of Agriculture, Shiraz University, Shiraz 71441-65186, Iran)

  • Andrea Mastinu

    (Department of Molecular and Translational Medicine, University of Brescia, Viale Europa 11, 25123 Brescia, Italy)

Abstract

The application of superabsorbents to soils and seed coatings is a pre-sowing seed treatment method that is commonly used to improve early vigor and establish stability and uniformity under water deficit conditions. To evaluate the interaction of seed coating and superabsorbent on Calotropisprocera L. (milkweed) under water deficit conditions, a greenhouse experiment was conducted. The experiment was conducted with four coating material levels (non-coated seeds and seeds coated with peat moss, vermicompost, and canola residue), four growth medium levels (soil, sand + soil, soil + 2 g superabsorbent, and soil + 4 g superabsorbent), and three field capacity regimes (25, 50%, and 100%) in a completely randomized design factorial arrangement with four replications. Reducing the field capacity from 100 to 25% led to decreased growth (shoot and root dry weights and leaf area) and chlorophyll content. The activities of SOD, CAT, APX antioxidant enzymes, and proline increased under drought stress. The use of superabsorbent polymers in growth media enhanced growth indices and chlorophyll content and decreased the activity of antioxidant enzymes and proline under water deficit conditions. The highest chlorophyll and growth indices were observed when 4 g of superabsorbent was added to the growth medium under drought stress. The application of 4 g of superabsorbent to the growth medium reduced the activity of antioxidant enzymes and proline. The use of seed coatings improved the growth indices, antioxidant enzyme activity, and chlorophyll content under drought stress. The most adaptive morphological and physiological responses to water stress were observed in the vermicompost-coated seeds. The vermicompost coating containing a superabsorbent polymer (4 g/kg soil) proved to be the best for establishing milkweed under mild (50% FC) and severe water deficits (25% FC).

Suggested Citation

  • Mojtaba Dolatkordestani & Mansour Taghvaei & Andrea Mastinu, 2023. "Effective Treatments for the Successful Establishment of Milkweed ( Calotropis procera L.) under Water Deficit," Land, MDPI, vol. 12(11), pages 1-15, October.
    • Handle: RePEc:gam:jlands:v:12:y:2023:i:11:p:1987-:d:1269860
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    References listed on IDEAS

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    1. Esmaeil Zangani & Kamran Afsahi & Farid Shekari & Eileen Mac Sweeney & Andrea Mastinu, 2021. "Nitrogen and Phosphorus Addition to Soil Improves Seed Yield, Foliar Stomatal Conductance, and the Photosynthetic Response of Rapeseed ( Brassica napus L.)," Agriculture, MDPI, vol. 11(6), pages 1-10, May.
    2. AbdAllah, Ahmed M. & Mashaheet, Alsayed M. & Burkey, Kent O., 2021. "Super absorbent polymers mitigate drought stress in corn (Zea mays L.) grown under rainfed conditions," Agricultural Water Management, Elsevier, vol. 254(C).
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