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Influence of superabsorbent polymer rates on growth of saffron replacement corms

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Abstract

Mother corm size is the most important factor for production of replacement corms, flower, and stigma yield in saffron. In semi-arid regions, water shortage is a deterrent agent for appropriate corm growth of saffron. Therefore, in this experiment the effects of six levels of superabsorbent polymer (SAP) including 0, 10, 20, 30, 40, and 50 kg ha-1 was investigated on growth indices of replacement corms of saffron. For this purpose, an experiment was evaluated at the research farm of the Saffron Research Group, Sarayan Faculty of Agriculture, University of Birjand, Iran, during 2013-2015. Results showed that SAP application did not considerable effect on corm growth indices in the first life cycle of saffron. Nevertheless, consumption of 30-40 kg ha-1 SAP somewhat improved the number and total weight of replacement corms per clone. In the second life cycle of saffron, the positive impact of SAP was clearly observed on the growth of replacement corms. The application of 40 kg ha-1 SAP increased the amount of number of replacement corms per clone by 13%, total weight of replacement corms per clone by 36%, and scale weight of corms per clone by 50% compared with control. In addition, the amount of mean weight of replacement corms and mean number of buds per corm in treatment of application of 40 kg ha-1 SAP were 29 and 27% higher than the control treatment, respectively. SAP application decreased the amount of non-standard (< 8 g) corm production while significantly increased the percentage of corms with standard weight. Overall, the increasing effect of SAP application on corm weight, bud number, and standard corm yield was higher than the number of produced corms per clone. In addition, water-use efficiency in SAP application treatments (6.1 kg standard corm m-3) was more than the control (4.34 kg m-3) treatment. In total, SAP application is an appropriate strategy for production of standard saffron corms in semi-arid regions.

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Authors and Affiliations

  1. Saffron Research Group, Department of Agronomy and Plant Breeding, Faculty of Agriculture, University of Birjand, Birjand, Iran

    Hamid-Reza Fallahi, Gholamreza Zamani & Alireza Samadzadeh

  2. Departement of Agronomy and Plant Breeding, Sarayan Faculty of Agriculture, University of Birjand, Birjand, Iran

    Mokhadereh Mehrabani

  3. Departement of Agroecology, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran

    Mahsa Aghhavani-Shajari

Authors
  1. Hamid-Reza Fallahi
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  2. Gholamreza Zamani
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  3. Mokhadereh Mehrabani
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  4. Mahsa Aghhavani-Shajari
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  5. Alireza Samadzadeh
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Correspondence to Hamid-Reza Fallahi.

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Fallahi, HR., Zamani, G., Mehrabani, M. et al. Influence of superabsorbent polymer rates on growth of saffron replacement corms. J. Crop Sci. Biotechnol. 19, 77–84 (2016). https://doi.org/10.1007/s12892-015-0083-z

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  • DOI: https://doi.org/10.1007/s12892-015-0083-z

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