Correlation between phytotoxicity on annual ryegrass (Lolium rigidum) and production dynamics of allelochemicals within root exudates of an allelopathic wheat
Correlation between phytotoxicity on annual ryegrass (Lolium rigidum) and production dynamics of allelochemicals within root exudates of an allelopathic wheat
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DOI：
10.1023/a:1026222414059
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发表时间：
2003-10-01
影响因子：
2.3
通讯作者：
Pratley, J
中科院分区：
文献类型：
--
作者：
Huang, ZQ;Haig, T;Pratley, J
一年生黑麦草根生长生物测定的化感作用与植物毒性的相关性研究和浓度的选择动态产生的化感物质定量的根分泌物的CV。哈普利小麦（小麦）硬脑膜（Desf.）Husn.）在无菌琼脂-水培养基中，在小麦幼苗生长的前15天期间监测。超过15天的生长期的变化，同时使用GC/MS/MS测定5渗出的苯并恶嗪酮和7酚酸的量。证实纯化合物的剂量-反应测量进行了一系列的浓度范围内的小麦分泌物中的假定化感物质。一个基于协同作用的建议，使用监测的化合物来解释所观察到的低渗出液浓度的植物毒性进行了探讨，但被发现是实验不足。
An improved allelopathic correlation between phytotoxicity measured in root growth bioassay upon annual ryegrass ( Lolium rigidum Gaud.) and the concentrations of a selection of dynamically produced allelochemicals quantified in the root exudates of cv. Khapli wheat ( Triticum turgidum ssp. durum (Desf.) Husn.) monitored during the first 15 days of wheat seedling growth in a sterile, agar - water medium, has been established. Changes over the 15-day growth period in the quantities of five exuded benzoxazinones and seven phenolic acids were measured simultaneously using GC/MS/MS. Substantiating pure compound dose - response measurements were conducted over a range of concentrations for the putative allelochemicals within the wheat exudates. One synergism-based proposal using the monitored compounds to explain the observed low-exudate-concentration phytotoxicity was explored, but was found to be experimentally inadequate.