title: Radiolytically depolymerized sodium alginate improves physiological activities, yield attributes and composition of essential oil of Eucalyptus citriodora Hook.
abstract: Eucalyptus citriodora Hook. is highly valued for its citronellal-rich essential oil (EO) extracted from its leaves. Hence, escalated EO production of eucalyptus is the need of hour. Marine polysaccharides (sodium alginate) are processed through gamma radiation of particular intensity, to obtain the irradiated sodium alginate (ISA). A pot experiment was conducted to study the effect of foliar application of ISA on growth, biochemical, physiological, EO yield and composition of E. citriodora. The treatments were applied as: foliar spray of deionized water only (control), seed soaked with ISA (90 mg L(-1)) and foliar spray of ISA with 30, 60, 120 and 240 mg L(-1). The treatment 6 (spray of ISA at 120 mg L(-1)) showed the highest value for most of the parameters studied. It also enhanced the EO content (33.3%), EO yield (86.7%), citronellal content (63.4%) and citronellal yield (205.5%) as compared to the control.
authors.affiliation: Plant Physiology Section, Department of Botany, Aligarh Muslim University, Aligarh, 202 002, UP, India. Electronic address: akbar.agra.alig@gmail.com.
authors.forename: Akbar
authors.initials: A
authors.lastname: Ali
authors.affiliation: Plant Physiology Section, Department of Botany, Aligarh Muslim University, Aligarh, 202 002, UP, India.
authors.forename: M Masroor A
authors.initials: MM
authors.lastname: Khan
authors.affiliation: Plant Physiology Section, Department of Botany, Aligarh Muslim University, Aligarh, 202 002, UP, India.
authors.forename: Moin
authors.initials: M
authors.lastname: Uddin
authors.affiliation: Plant Physiology Section, Department of Botany, Aligarh Muslim University, Aligarh, 202 002, UP, India.
authors.forename: M
authors.initials: M
authors.lastname: Naeem
authors.affiliation: Plant Physiology Section, Department of Botany, Aligarh Muslim University, Aligarh, 202 002, UP, India.
authors.forename: Mohd
authors.initials: M
authors.lastname: Idrees
authors.affiliation: Plant Physiology Section, Department of Botany, Aligarh Muslim University, Aligarh, 202 002, UP, India.
authors.forename: Nadeem
authors.initials: N
authors.lastname: Hashmi
authors.affiliation: Plant Physiology Section, Department of Botany, Aligarh Muslim University, Aligarh, 202 002, UP, India.
authors.forename: Tariq Ahmad
authors.initials: TA
authors.lastname: Dar
authors.affiliation: Head, RTDD, Isotope Group, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India.
authors.forename: Lalit
authors.initials: L
authors.lastname: Varshney
mesh_terms: D000080462:Acyclic Monoterpenes; D000447:Aldehydes / Q000032:analysis; D000464:Alginates / Q000737:chemistry* / Q000494:pharmacology* / Q000528:radiation effects; D002256:Carbonic Anhydrases / Q000378:metabolism; D005052:Eucalyptus / Q000737:chemistry* / Q000187:drug effects* / Q000254:growth & development; D020723:Glucuronic Acid / Q000737:chemistry / Q000494:pharmacology / Q000528:radiation effects; D006603:Hexuronic Acids / Q000737:chemistry / Q000494:pharmacology / Q000528:radiation effects; D039821:Monoterpenes / Q000032:analysis; D050901:Nitrate Reductase / Q000378:metabolism; D009822:Oils, Volatile / Q000737:chemistry*; D010860:Pigments, Biological / Q000378:metabolism; D018515:Plant Leaves / Q000187:drug effects / Q000378:metabolism
chemical_list: D000080462:Acyclic Monoterpenes; D000447:Aldehydes; D000464:Alginates; D006603:Hexuronic Acids; D039821:Monoterpenes; D009822:Oils, Volatile; D010860:Pigments, Biological; D020723:Glucuronic Acid; D050901:Nitrate Reductase; D002256:Carbonic Anhydrases; C108217:citronellal
keywords: Citronellal; Essential oil; Eucalyptus citriodora; Irradiated sodium alginate; Plant promoter