Effect of oligomeric sodium alginate and chitosan on Growth Attributes, Physiology and Essential Oil Composition in Mentha arvensis L. in Northern Himalayas

Journal of Functional and Environmental Botany Pub Date : 1900-01-01 DOI:10.5958/2231-1750.2017.00012.9

M. Fazili, A. Wani, Z. Bhat

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引用次数: 2

Abstract

Mentha is a genus of plants in the family Lamiaceae. It is estimated that 13 to 18 species exist. The oil derived from Mentha is of great economical use. Natural occurring marine polysaccharides such as sodium alginate, chitosan, carrageenan after undergoing depolymerisation by different techniques have shown positive influence on growth, morphological and yield attributes of plants. In this study, the gamma-degraded polysaccharides like sodium alginate and chitosan have been applied to check the effect on growth, physiological and essential oil composition. A pot experiment was conducted to evaluate the influence of different doses of irradiated sodium alginate (ISA) and chitosan on the growth, physiological and biochemical attributes as well as essential oil composition in Mentha arvensis L. A single dose of ISA was used (80 mg L−1) in combination with six doses of irradiated chitosan (20, 40, 60, 80, 100, 120 mg L−1). It was found from the results that the treatment T4 (ISA80+ IC80) proved to be optimum and enhanced most of the growth parameters. The plant height was recorded higher by 16.88%, fresh weight increase by 41.62%, and dry weight by 31.74% over the control, at the treatment T4 (ISA80+ IC80) respectively. Similar trend was noticed while analysing the physiological and biochemical parameters where the total chlorophyll content and carotenoid content was increased by 40.25% and 37.30%. The carbonic anhydrase (CA) activity increased by 16.26 %.Total nitrogen (N) content showed the maximum increase by 27.60% P content by 14.34% and K content by almost 5.01% over the control plants. The combined treatment (ISA80+ IC80) enhanced the oil yield (as revealed by the Gas Chromatography GC/GC-MS (Mass Spectroscopy) analysis) by 2.89% in menthol content, 39.74% in menthol content, Lmenthone content by 80.05%, L-menthone yield by 319.28%, isomenthone content by 31.73%, menthylacetate content by 36.32%, menthylacetate yield by 200% over the control in M. arvensis L.

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低聚海藻酸钠和壳聚糖对北喜马拉雅地区薄荷生长特性、生理及精油成分的影响

薄荷是薄荷科植物的一个属。据估计现存13到18种。从薄荷中提取的油具有很大的经济用途。海藻酸钠、壳聚糖、卡拉胶等天然海洋多糖经过不同的解聚技术，对植物的生长、形态和产量属性都有积极的影响。本研究以海藻酸钠、壳聚糖等γ -降解多糖为研究对象，考察其对植物生长、生理及精油成分的影响。采用盆栽试验研究了不同剂量海藻酸钠(ISA)和壳聚糖(chitosan)对薄荷(Mentha arvensis L.)生长、生理生化特性及精油成分的影响。采用单剂量海藻酸钠(80 mg L−1)与6剂量壳聚糖(20、40、60、80、100、120 mg L−1)联合处理。结果表明，T4 (ISA80+ IC80)处理效果最佳，对大部分生长参数均有促进作用。与对照相比，T4 (ISA80+ IC80)处理的株高、鲜重和干重分别提高了16.88%、41.62%和31.74%。在生理生化参数分析中也发现了类似的趋势，总叶绿素含量和类胡萝卜素含量分别提高了40.25%和37.30%。碳酸酐酶(CA)活性提高了16.26%。全氮(N)含量最高，比对照植株提高27.60%，P含量提高14.34%，K含量提高近5.01%。经ISA80+ IC80联合处理后，薄荷醇、薄荷醇、薄荷酮、L-薄荷酮、异薄荷酮、乙酸乙酯、乙酸乙酯的收率分别比对照提高了2.89%、39.74%、80.05%、319.28%、31.73%、36.32%、200%。

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Journal of Functional and Environmental Botany

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