Effects of Polyamines on Seed Germination Charactristics of Okra (Abelmoschus esculentus L. Basenti) under Different Time and Temperatures

Esmaielpour, Behrooz; Bahadori, Somayeh; Khoramdel, Seror

doi:10.22034/iuvs.2020.72727.1019

Effects of Polyamines on Seed Germination Charactristics of Okra (Abelmoschus esculentus L. Basenti) under Different Time and Temperatures

Document Type : Original Article

Authors

Behrooz Esmaielpour ¹

Somayeh Bahadori ²

Seror Khoramdel ³

¹ Associate Professor, Department of Horticultural Sciences, Faculty of Agriculture, University of Mohaghegh Ardabili, Ardebil, Iran

² Ph.D. Student, Department of Horticulture Sciences, Faculty of Agriculture, University of Mohaghegh Ardebil, Ardebil, Iran

³ Associate Professor, Department of Horticultural Sciences, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran

10.22034/iuvs.2020.72727.1019

Abstract

In order to investigate the effects of seed priming by polyamines on germination and seedling growth charecteristic of okra (Abelmoschus esculentus L .Basenti) at different temperatures two laboratory experiments were conducted as factorial layout based on a completely randomized design with four replications in 2014. In the first experiment, treatments were consisted two times (12 and 24 hours) and seed priming with five concentrations of spermine and spermidine (0, 0.5, 1, 1.5 and 2 mM). To determine the optimal time for okra seeds priming. The optimal seeds priming was occurred at 12 hours for all concentrations of spermine and spermidine. There after, seed germination and seedling growth study of primed seeds were carried out at temperatures of 10, 15, 20 and 25 °C in the second. Results showed that both seed germination and seedling growth of okra decreased by decreasing of temperature. The highest seed germination was observed at 25 °C. In addition, seed priming by spermine and spermidine caused significant increase in all germination and seedling growth characteristics of okra at 25 °C. Seed priming at 0.5 and 1 mM concentrations of spermine and spermidine were more efficient to improve seed germination and seedling growth charactristics of okra under different temperatures.

Keywords

Spermidine

Spermine

Chilling stress

Seed germination

Hormone-priming

20.1001.1.26764814.1398.3.2.10.8

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