EFFECTS OF OSMOTIC-STRESS ON THE ESSENTIAL OIL CONTENT AND COMPOSITION OF PEPPERMINT
EFFECTS OF OSMOTIC-STRESS ON THE ESSENTIAL OIL CONTENT AND COMPOSITION OF PEPPERMINT
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DOI：
10.1016/0031-9422(90)87087-b
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发表时间：
1990-01-01
期刊：
影响因子：
3.8
通讯作者：
SIMON, JE
中科院分区：
文献类型：
--
作者：
CHARLES, DJ;JOLY, RJ;SIMON, JE
水培生长的薄荷（Mentha. piperita L.）植物（29和36天龄的插条）各自受到生长溶液势（psi.s）和暴露于轻度和中度渗透胁迫的持续时间的影响。处理一周后，叶的精油含量从44.0 μ l g-1增加到61.1 μ l g-1叶干重，因为psi.s从-0.05降低到-0.6 MPa，并且在这些处理水平下生长的植物中，芽生物量、叶面积或叶的总油产量没有明显差异。相同水平的.psi.s施加两周导致植物生长和叶油含量的较大差异。当植物经受增加水平的渗透胁迫时，叶精油含量从44.0 μ l g-1干重线性增加至70.8 μ l g-1干重，但茎生物量和叶面积各自呈指数下降。经过两周处理的植物的总精油产量随着胁迫的增加而显著降低。精油的主要成分，薄荷酮和薄荷醇，一起占约80%的总单萜，这一比例是不受治疗。几个一致的趋势，在油成分之间的压力处理是明显的，虽然倍半萜类的相对比例增加，渗透胁迫。
The essential oil content and composition of hydroponically-grown peppermint (Mentha .times. piperita L.) plants (29- and 36-day-old cuttings) were each affected by growth solution potential (.psi.s) and duration of exposure to mild and moderate osmotic stress. After one week of treatment, the essential oil content of leaves increased from 44.0 to 61.1 .mu.l g-1 leaf dry wt as .psi.s decreased from -0.05 to -0.6 MPa, and no differences in shoot biomass, leaf area, or total oil production by leaves were evident in plants grown at these treatment levels. The same levels of .psi.s applied for two weeks resulted in larger differences in plant growth and leaf oil content. When plants were subjected to increasing levels of osmotic stress, leaf essential oil content increased linearly from 44.0 to 70.8 .mu.l g-1 dry wt, but shoot biomass and leaf area each decreased exponentially. Total essential oil yield of plants subjected to two weeks of treatment was significantly reduced as stress increased. The major constituents of essential oil, menthone and menthol, together accounted for ca 80% of the total monoterpenes, and this proportion was unaffected by treatment. Few consistent trends in oil composition among stress treatments were evident, although the relative proportion of sesquiterpenes increased with osmotic stress.