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Plant Growth Regulators Improve the Production of Volatile Organic Compounds in Two Rose Varieties

Plant Growth Regulators Improve the Production of Volatile Organic Compounds in Two Rose Varieties

Mohammed Ibrahim, Manjree Agarwal, Jeong Oh Yang, Muslim Abdulhussein, Xin Du, Giles Hardy, Yonglin Ren

Plants (Basel). 2019 Jan 31;8(2):35.

PMID: 30709057

Abstract:

The study focused on the influence of the plant growth regulators (PGRs) benzyladenine (BA) and naphthalene acetic acid (NAA) on the production of volatile organic compounds (VOCs) from the flowers of two modern rose varieties, Hybrid Tea and Floribunda. Thirty-six plants of Hybrid Tea and Floribunda were tested. Benzyladenine and naphthalene acetic acid were applied at 0, 100 and 200 mg/L to both rose varieties. Gas chromatography, coupled with flame ionization detection and mass spectrometry, was used to analyze and identify the volatile organic compounds from the flowers. A three-phase fiber 50/30 µm divinylbenzene/carboxen/polydimethylsiloxane was used to capture VOCs, at 2, 4 and 8 weeks, and 4 weeks was selected as it had the highest peak area. In total, 81 and 76 VOCs were detected after treatment of both rose varieties with BA and NAA, respectively. In addition, 20 compounds, which had significant differences between different treatments, were identified from both rose varieties. The majority of VOCs were extracted after the application of 200 mg (BA and NAA) /L of formulation, and four important compounds, cis-muurola-4(141)5-diene, y-candinene, y-muurolene and prenyl acetate, increased significantly compared to the controls. These compounds are commercially important aroma chemicals. This study used the rapid and solvent-free SPME method to show that BA and NAA treatments can result in significant VOC production in the flowers of two rose varieties, enhancing the aromatic value of the flowers. This method has the potential to be applied to other valuable aromatic floricultural plant species.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP1191168	Prenyl acetate		1191-16-8	Price

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