首页|连作地黄的生理生态响应与品质评价

连作地黄的生理生态响应与品质评价

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目的:以盆栽正茬、重茬和连作2年的"温85-5"地黄品种为实验材料,分析地黄生理生态及品质变化情况,探讨连作自毒作用对地黄生理生化特性及其品质形成的影响.方法:测定分析不同连作条件下地黄光合作用、根系活力、植株体内保护酶系统及MDA含量等相关指标,并应用HPLC法分析评价了地黄品质.结果:连作致使下荐地黄的叶绿素含量降低,光合作用能力下降,根系活力减弱;地黄植株内由于连作造成的自由基增多,引起植株内保护酶POD,SOD,CAT活性增强,MDA含量升高,且药效成分含量降低;且伴随着连作年限增加,这种影响作用更强.结论:连作影响了地黄根系对水分和养分的吸收及光合作用能力,引起植株的抗氧化系统紊乱,导致地黄的生长受阻,致使药材品质下降.
Responses of physiological ecology and quality evaluation of Rehmannia gltinosa in continuous cropping
Objective: To study responses of physiological ecology and quality evaluation of Rehmannia glutinosa in continuous cropping. Method: The potted plant R. glutinosa which consists of first cropping, 1 year continuous cropping and 2 year continuous cropping were used as experimental materials. The photosynthetic activity, descending axis vitality, the protective enzymes system and MDA content were measured, the quality was evaluated by FTIR and HPLC. Result: Continuous cropping reduced the content of chlorophyll in the non-first cropping R. glutinos, the photosynthetic activity and descending axis vitality were weakened. Because of the increase of the free radical in the R. glutinos due to the continuous cropping, the activity of protective enzymes including POD, SOD and CAT were enhanced and MDA content were increased, more importantly the medical potency declined. And along with the increasing years of the continuous cropping, this effect becomes even stronger. Conclusion: Continuous cropping affects the descending axis abihty of absorbing water and nutrition and photosynthesis are inhibited R. glutinosa, at the same time, it also causes the disorders of antioxidation systems in R. glutinos, resulting in continuous cropping obstacle and decline of the medicinal materials quality.

Rehmannia glutinosacontinuous croppingphotosynthetic parametersthe system of protective enzymesphysiological ecologyquality evaluation

张重义、李改玲、牛苗苗、范华敏、李娟、林文雄

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河南农业大学,中药材研究所,河南,郑州,450002

福建农林大学,作物生理生态研究所,福建,福州,350002

地黄 连作 光合指标 保护酶系统 生理生态 品质评价

国家自然科学基金国家自然科学基金国家自然科学基金国家科技支撑计划

3077272930973875810729832006BA109B03

2011

10.4268/cjcmm20110905

中国中药杂志
中国药学会

中国中药杂志

CSTPCDCSCD北大核心
影响因子：1.718
ISSN：1001-5302
年,卷(期)：2011.36(9)
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