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Effects of drought stress on the alkaloid contents and growth parameters of catharanthus roseus

机译：干旱胁迫对长春花生物碱含量和生长参数的影响

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摘要

In the present investigation Catharanthus roseus , an important herb used in traditional as well as modern medicine, exposed to water deficit stress and possible changes in chlorophyll contents, photosynthesis rate, transpiration rate, growth parameters as well as total alkaloid content and vincristine and vinblastine levels were studied. Seedlings subjected to 4 different water-regimes. Experimental samples irrigated once every week or every second and third week and the control irrigated every day. Drought had adverse effect on height, weight and Relative water content of periwinkle. The photosynthetic activity and transpiration rate significantly decreased with increasing drought level. Total protein decreased to 77% and total chlorophyll decreased by 27%. Total alkaloid content significantly increased to maximum 187% compared to the control. Vincristine and vinblastine content of the seedlings grown under treatments3 increased to 175% and 171% compared to the control, respectively.
机译：在本次调查中，长春花（Catharanthus roseus）是传统和现代医学中使用的重要草药，暴露于缺水胁迫下，叶绿素含量，光合作用，蒸腾速率，生长参数以及总生物碱含量和长春新碱和长春碱水平可能发生变化被研究了。幼苗受到4种不同的水分调节。实验样品每周或每第二，第三周灌溉一次，而对照则每天灌溉。干旱对长春花的身高，体重和相对含水量有不利影响。随着干旱水平的提高，光合作用和蒸腾速率明显降低。总蛋白质减少到77％，总叶绿素减少27％。与对照相比，总生物碱含量显着增加至最大187％。与对照相比，在处理3下生长的幼苗的长春新碱和长春碱含量分别增加到175％和171％。

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