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Models of turfgrass seed germination related to water content

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  • Ying Jiang
  • Derong Su

Abstract

Turfgrasses have been widely utilized by humans to enhance the environment for more than several centuries. Seed germination is of great importance in the development of the turfgrass industry. In this study, the seed germination models of the responses of three types of turfgrasses to water were studied. The results indicated that irrigation water was mainly related to the variation of seed volume rather than a fixed value in this experiment. The maximum k value of tall fescue, Kentucky bluegrass and perennial ryegrass is 1.1548, 1.6946 and 4.0940, respectively. The optimal value of k is 1.0617 for tall fescue, 1.4610 for Kentucky bluegrass, and 1.6614 for perennial ryegrass. Perennial ryegrass seeds are more sensitive to water than those of tall fescue and Kentucky bluegrass, and this turfgrass is the fastest to reach the maximum value of the germination rate. Based on the results from the present experiment, the seed germination function can describe the response of turfgrass seed germination to external water content variation and their sensitivities. The function obtained could be used to perform quantitative studies on the dynamic changes of seed germination under different water conditions that will contribute to improved predictions of the optimal fitting curves of the germination over a range of water.

Suggested Citation

  • Ying Jiang & Derong Su, 2018. "Models of turfgrass seed germination related to water content," PLOS ONE, Public Library of Science, vol. 13(10), pages 1-13, October.
    • Handle: RePEc:plo:pone00:0204983
    DOI: 10.1371/journal.pone.0204983
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    References listed on IDEAS

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    1. Mesgaran, Mohsen B. & Onofri, Andrea & Mashhadi, Hamid R. & Cousens, Roger D., 2017. "Water availability shifts the optimal temperatures for seed germination: A modelling approach," Ecological Modelling, Elsevier, vol. 351(C), pages 87-95.
    2. Oweis, T.Y. & Farahani, H.J. & Hachum, A.Y., 2011. "Evapotranspiration and water use of full and deficit irrigated cotton in the Mediterranean environment in northern Syria," Agricultural Water Management, Elsevier, vol. 98(8), pages 1239-1248, May.
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