Effect of indole acetic acid and benzyl amino purine on growth indices of evening primrose

Subject Areas : Agroecology Journal

Yaghoub Mikaeili ¹ , Hassan Nourafcan ^{2 *} , Jalil Ajalli ³

1 - Horticultural Sciences Department, Miyaneh Branch, Islamic Azad University, Miyaneh, Iran
2 - Department of Horticultural Sciences, Miyaneh Branch, Islamic Azad University, Miyaneh, Iran
3 - Agronomy Department, Miyaneh Branch, Islamic Azad University, Miyaneh, Iran

Received: 2018-01-08 Accepted : 2018-05-23 Published : 2018-05-22

Keywords:  plant growth regulator,  auxin,  benzyl adenine,  cytokinin,  plant hormone,

Abstract :

Plant growth regulators effect on plants by different ways regulating their growth and development. Auxins and cytokinins are usually known to be stimulator for cell division and differentiation and plant organ development. The current study has been carried out to investigate the effect of foliar spraying of indole acetic acid (IAA) and benzyl amino purine (BAP) in concentrations of 100, 200, and 300 mg/L based on completely randomized design on evening primrose as a pot experiment. Spraying with both plant hormones especially BAP could be positively efficient on most of evaluated traits improvement. Higher concentrations were more effective on plant growth indices. The improving effect of BAP on aerial organs growth was more conspicuous; however, IAA was more effective on underground part.  Therefore, to improve evening primrose growth, spraying with 300 mg/L of BAP or IAA would be recommendable.