Iranian Journal of Horticultural Science

Iranian Journal of Horticultural Science

Effects of benzyl adenine and potassium nitrate on some morpho-physiological traits of Narcissus (Narcissus tazetta L.)

Document Type : Full Paper

Authors
Seyedeh Raziyeh Mousavi Matin 1
Seyyed Najmmaddin Mortazavi 2
Mokhtar Heidari 3
1 Former M. Sc. Student, Faculty of Agriculture, University of Zanjan, Iran
2 Assistant Professor, Faculty of Agriculture, University of Zanjan, Iran
3 Associate Professor, Ramin Agriculture and Natural Resources University, Khuzestan, Iran
10.22059/ijhs.2016.59814
Abstract
Several plant growth regulators are used to improve the quality of cut flower in bulb plants, but their effectiveness depends on genotype and plant growth conditions such as nutrition status. A pot experiment was conducted under farm condition to study Benzyl Adenine (BA) and potassium nitrate interaction on floret diameter, stem diameter, flower height, flower number per bulb, fresh and dry weight of flower, cut flower vase life and soluble carbohydrates and proteins in leaves of Narcissus. Different levels of BA (0, 100, 200 and 500 mgl-1) were applied by two approaches of soaking bulbs for 24 hours before planting and spraying at early stages of inflorescence emerge. Potassium nitrate levels of (0, 1, 2 and 4 gKg-1 soil) were applied in two stages of trifoliate and swelling of the inflorescence among leaves as soil application. The results showed that all evaluated traits affected significantly by Benzyl Adenine treatments, which indicated Narcissus plants were positive sensitive to cytokinines. There were no statistically-significant difference between control plants and those undergoing potassium nitrate treatments in terms of flower number per bulb, fresh and dry weight of flower and cut flower vase life. Interaction of Benzyl Adenine and potassium nitrate at high levels caused significant increase in floret diameter, stem diameter, fresh and dry weight of flower, cut flower vase life, soluble carbohydrates and proteins. Results showed that the alteration in morphological and biochemical characters because of Benzyl Adenine and nitrogen positively affected cut flower quality of Narcissus.
Keywords
cut flower
flowering quality
growth regulater
nitrogen
ornamental plant
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Iranian Journal of Horticultural Science
Volume 47, Issue 3 - Serial Number 3
Autumn 2016
Pages 521-529

  • Receive Date 26 December 2014
  • Revise Date 17 April 2015
  • Accept Date 17 May 2015