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Electrospun polyvinyl alcohol (PVA) nanofibers as carriers for hormones (IAA and GA3) delivery in seed invigoration for enhancing germination and seedling vigor of agricultural crops (groundnut and black gram)

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Abstract

In the present study, nanofibers were developed from biodegradable polymer polyvinyl alcohol (PVA). PVA at 10% has produced fiber with required size (111 nm to 176 nm). The nanofiber was infused with plant growth promoting hormones, gibberellic acid (GA3) and indole acetic acid (IAA) and was characterized using SEM and UV–Vis spectroscopy. Topography of hormones-loaded electrospun fiber revealed that the diameter of the fiber was increased due to loading of hormones. GA3-loaded nanofibers had the diameter ranges from 131 to 296 nm, and IAA-loaded fibers had the diameter size ranges from 106 to 275 nm after loading. The UV–Vis spectra confirmed the hormonal loading in e-spun nanofiber. Hormones-infused PVA nanofibers were evaluated for its bio-efficacy on seed quality under in vitro condition, and the results revealed that IAA incorporated nano-fiber-coated seeds such as groundnut and black gram had registered higher germination at 88% and 86%, seedling vigor at 3458 and 3431, respectively. The nano-fibers-coated seeds were also tested under different PEG-induced moisture regimes. The data indicated that groundnut and black gram seeds coated with IAA-infused nanofibers were found to be registered higher germination and seedling vigor under higher moisture stress.

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Acknowledgements

The author KR gratefully acknowledged to Department of Science and Technology, Ministry of Science and Technology, Government of India, New Delhi, for financial assistance. The authors thank Tamil Nadu Agricultural University (TNAU), Coimbatore, for support in research activities.

Funding

Funding was provided by Department of Science and Technology (DST), Government of India (IN) (CRG/2019/002871 Dated 11.02.2020).

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Authors and Affiliations

  1. Department of Nanoscience and Technology, Tamil Nadu Agricultural University, Coimbatore, 641 003, India

    K. Raja & K. S. Subramanian

  2. Oil Seeds Research Station, Tamil Nadu Agricultural University, Tindivanam, India

    C. Prabhu

  3. Centre for Ocean Research (DST-FIST Sponsored Centre), Sathyabama Institute of Science and Technology, Chennai, 600 119, India

    K. Govindaraju

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  1. K. Raja
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  2. C. Prabhu
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  3. K. S. Subramanian
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  4. K. Govindaraju
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Correspondence to K. Raja.

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Raja, K., Prabhu, C., Subramanian, K.S. et al. Electrospun polyvinyl alcohol (PVA) nanofibers as carriers for hormones (IAA and GA3) delivery in seed invigoration for enhancing germination and seedling vigor of agricultural crops (groundnut and black gram). Polym. Bull. 78, 6429–6440 (2021). https://doi.org/10.1007/s00289-020-03435-6

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  • DOI: https://doi.org/10.1007/s00289-020-03435-6

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