作 者：
戢小梅;许林;谢焰锋;王湛昌;陈法志;陈卫东;杨守坤;罗智勇
单 位：
南漳县森林病虫防治检疫站;武汉市林业果树科学研究所
关键词：
紫露草;石菖蒲;水涝胁迫;生理生化特性;乡土植物
摘 要：
研究了紫露草和石菖蒲在水涝胁迫下所发生的生理生化响应,旨在探讨2种植物耐涝性与生理参数的关系,以期为它们的科学栽培和管理提供依据,同时为草本植物耐涝机理提供理论参考。以石菖蒲和紫露草的盆栽苗为试验材料,人工模拟正常状态、根系淹水、植株1/5淹水、植株1/2淹水等4种不同程度水涝胁迫,试验周期为45 d,调查2种植物在不同水涝胁迫下的受害症状,并对其生理指标进行测定。结果表明,1 2种植物都具有不同程度的耐涝能力。在正常状态和根系淹水的情况下,2种植物体内的超氧化物歧化酶(SOD)和过氧化物歧化酶(POD)活性,以及叶绿素(Ch1)含量、可溶性蛋白(SP)含量、丙二醛(MDA)含量皆呈上升趋势。2 2种植物的耐涝能力存在显著差异,其中石菖蒲的耐涝能力最强,紫露草次之。在45 d水涝胁迫中,石菖蒲体内的POD等5个指标的平均增量显著超过紫露草,而且前者可保持连续增长并维持在较高水平,而紫露草在处理2后呈现出下降趋势。因此,2种植物的耐涝机制可能与形态建成、酶促反应等生理适应性调节有关。
译 名：
Effects of Flooding Stress on Physiological Adaption Metabolism of Two Species of Native Herbage
作 者：
JI Xiao-mei;XU Lin;XIE Yan-feng;WANG Zhan-chang;CHEN Fa-zhi;CHEN Wei-dong;YANG Shou-kun;LUO Zhi-yong;Wuhan Science Research Institute of Forestry&Fruit-tree;Nanzhang Forest Pest Control and Quarantine Station;
关键词：
Tradescantia albiflora;;Acorus tatarinowii Schot;;Waterlogging and flooding stress;;Physiological-biochemical characteristics;;Indigenous plant
摘 要：
The research of physiological and biochemical response of Tradescantia albiflora and Acorus tatarinowii Schott occurred under soil waterlogging. The relationship between waterlogging resistant ability and physiological parameters of the two plants was discussed in the present study. The aim was to supply the evidence for scientific cultivation management of the two plants,meanwhile,to provide the theory information for the waterlogging resistant mechanism of herbage. Based on artificial experiment of potted transplants during 45 days,the water tress conditions were simulated with normal state,root waterlogged,1 /5 plant height waterlogged and 1 /2 plant height waterlogged. The damage symptoms of two plants had been investigated,and some physiological indices were determined.( i) In different level,the two plants species all showed perfect tolerant ability tolerant to waterlogging. the two plants species all showed perfect ability tolerant to waterlogging. In the normal condition of normal state and root waterlogged,superoxide dismutase( SOD) activity,ascorbic acid peroxidase( POD) activity,chlorophyll( Chl) content,soluble protein( SP) content and Malondialdehyde( MDA) content in the leaves or roots of the two plant species,both showed an increasing tendency.( ii) However,there was a remarkable difference in their watelogging or flooding resistant ability among the two plant species. Acorus tatarinowii Schott had the strongest tolerance to waterlogging or flooding,and Tradescantia albiflora the weakest.During 45 days of waterlogging or flooding stress,the average increment of POD,SOD activeness,and Chl,SP and MDA content in in the leave of A. tatarinowii Schott were not only greatly higher than the ones in T. albiflora,but also kept the continuing growth tendency and maintained at high levels,while those indexes in T. albiflora showed a trend of sharp decline. For the two plants,water resistant mechanism was probably related to their regulation ability of seedling structure and enzymatic reaction,etc.
