摘要
自毒作用是同种植物个体之间的一种化学作用,是植物经过长期环境适应与进化选择而获得的一种避免种内竞争的机制。药用牡丹皮是中国著名的道地中药材,连作障碍会影响药用牡丹皮的产量、质量及产品安全,在药用牡丹皮的GAP生产中明确提出禁止连作和重茬。综述了自毒作用的定义、特点、自毒物质的种类、释放途径及作用机理,并结合药用牡丹的生物学特征及研究现状等问题分析了药用牡丹连作障碍中的自毒作用。认为药用牡丹的自毒作用是连作障碍的主要原因之一,自毒作用可以通过牡丹根系分泌产生自毒物质、植株残体分解释放有害物质及专性或兼性病虫害产生的毒素来实现,并在此基础上提出连作障碍的防治措施和研究展望,以期实现药用牡丹皮生产的可持续发展。
Autotoxicity is a chemical interaction among intraspecific plant individuals. It is a mechanism that plants avoid the intraspecific competition by adapting environment and evolving selection in the long time. Peony root-bark is famous and traditional Chinese medicinal materials in China. The yield, quality and product safety of peony root-bark can be affected by continuous cropping obstacles in planting. Continuous cropping has been forbidden in GAP planting of medical peony. The concept, occurrence regularity, characteristics, substance categories, releasing approaches, and mechanism of autotoxicity,and analyzing the autotoxicity in continuous cropping obstacles with the biological characteristics and research status of medical peony were summarized. Autotoxicity is a main way of continuous cropping obstacles in medical peony planting. Autotoxicity is realized by toxins from root exudates, plants residual decomposition and obligate of half-obligate parasitism pathogen. The control measures and research prospects are put forward at last, and expected to build up the sustainable development in medical peony planting.
出处
《生物学杂志》
CAS
CSCD
2009年第6期76-79,共4页
Journal of Biology
基金
"生物环境与生态安全"安徽省重点实验室基金
安徽省科学与技术后备人才选基金项目(2006-5)
关键词
药用牡丹
连作障碍
自毒作用
防治措施
medical peony
continuous cropping obstacles
autotoxicity
control measures
