Effects of plant growth regulators (PGRs) on morphological traits and essential oil of daffodil (Narcissus tazetta L.)

Subject Areas : Agroecology Journal

Fatemeh Nakhaei ¹ , ahmad khalili ² , mohammad ali naseri ³ , parviz abromand ⁴

1 - Assistant Professor, Birjand Branch Islamic Azad University, Birjand, Iran.
2 - Prof. in Horticulture , Science and Reasearch Branch, Islamic Azad University, Tehran, Iran, respectively.
3 - Assistant Prof. of Chemistry Department, Birjand University.
4 - Assistant Prof. in chemistry, Science and Reasearch Branch, Islamic Azad University, Tehran, Iran, respectively.

Received: 2008-12-16 Accepted : 2009-11-17 Published : 2011-01-21

Keywords: GA3, Essential Oil, IBA, BA, CCC, Daffodil, Flower diameter, flowers Number, Morrphological traits,

Abstract :

Daffodil (Narcissus tazetta) not only is known as a cut flower and ornamental plant, but also has high advantages in perfume industry. Effect of four kinds of plant growth regulators including gibberelic acid (GA3) 100 ppm, banzyladenine (BA) 500 ppm, indole butyric acid (IBA) 200 ppm and Cycocel CCC 800 ppm) onmorphological traits and essential oil of daffodil were investigated. Plant growth regulators were sprayed at two stages including bulbs and foliage parts atinflorescence. The essential oil of fresh flowers was extacted using solvent extraction method. The results showed that GA3 and BA treatments had significant effects on increasing stem length, flower diameter and number of flowers in each inflorescence and also accelerated flowering. IBA application elongated flowering stem length but CCC decreased stem length. BA and IBA applications caused significant increase in essential oil, CCC had no effect on that, but GA3 decreased its quantity.

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