Iranian Journal of Horticultural Science

Iranian Journal of Horticultural Science

The effects of gibberellic acid on some morpho-physiological characteristics of two varieties of white and yellow flowers (Alba and Apollo) Snapdragon (Antirrhinum majus)

Document Type : Full Paper

Authors
Mehrangiz Chehrazi 1
Hamid Reza Hosseini 2, 3
Elahe Hashemi Dehkordi 4, 5
1 Assistant Professor, University of Shahid Chamran, Ahvaz, Iran
2 Former M.Sc. Student, University of Shahid Chamran, Ahvaz, Iran
3 Ph. D. Candidate, University of Shiraz, Iran
4 Former M. Sc. Student, University of Shahid Chamran, Ahvaz, Iran
5 Ph. D. Candidate, University of Zanjan, Iran
10.22059/ijhs.2017.130996.834
Abstract
The evaluate the effect of gibberellic acid (zero, 100, 200 and 400 milligrams per liter) on quantitative growth characteristics of two varieties of Snapdragon (Antirrhinum majus) a factorial experiment  base on a completely randomized block design with three replications were designed. Seedlings 50 days after sowing seed (6 to 8 true leaf stage) was exposure treated with gibberellic acid levels (as foliar). The results showed increased concentrations of gibberellic acid was enhanced significantly traits. The largest number, length and diameter of the branches of flowering, inflorescence length, floret number, number of leaves, vase life and also shoot fresh weight was obtained of the interaction between 400 and 200 ppm gibberellic acid and the yellow varieties (Apollo) and were then white varieties (Alba). Among different concentrations of gibberellic acid maximum diameter of the floret, leaf area, chlorophylls a, b and total and shoot dry weight was obtained of 400 mg/liter GA and the lowest in the control. The leaf area and shoot dry weight in yellow variety was higher than the white variety.
Keywords
Chlorophyll
durability
gibberellin
flowering branch
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Iranian Journal of Horticultural Science
Volume 48, Issue 2 - Serial Number 2
Summer 2017
Pages 265-273

  • Receive Date 31 August 2015
  • Revise Date 05 January 2016
  • Accept Date 31 January 2016