摘要
根系分泌物是引起连作障碍的原因之一。为解决线辣椒栽培中连作障碍问题,以陕西关中地区线辣椒主栽品种陕椒2006为试材,采用水培收集、气质联用仪(GC-MS)检测,分析陕椒2006在不同生长发育阶段根系分泌物的组成成分和相对含量。结果表明,线辣椒根系分泌物由多种有机化合物组成,在苗期水培30d、苗期水培60d以及开花期水培30d的根系分泌物中分别检出相似度(或称匹配度)在70%以上的有机化合物21、27和31种,其中相对含量在0.20%以上的分别为21、24和29种。3个生育阶段的有机化合物可分为酸类、酚类、烃类、酯类、醇类、胺类、酮类和苯及其他杂环类8个类型,以酯类化合物所占比例最大,总相对含量分别为67.29%、56.07%和59.51%。3个阶段共有的物质13种,3个阶段独有的物质依次为3种、5种和12种。依据前人的研究结果和理论判断,该试验所检出的有机化合物中,17种具有化感作用,其中3个阶段共有的物质为9种,苗期30d或60d与开花期30d共有的物质为3种,苗期60d独有的物质为两种,开花期30d独有的物质为3种。
Abstract： Root exudates are one of the important factors causing continuous cropping obstacles. In order to resolve the problem of continuous cropping obstacles in chili pepper, the composition and con- tent of the root exudates of chili pepper Shaanjiao 2006 with hydroponics in different growth stages were determined by means of GC-MS. The results showed that the chili pepper root exudates various organic compounds. The 21,27 and 31 kinds of organic compounds, of which similarity （or matching） in more than 70%, were determined in seedling 30 d, seedling 60 d and flowering plant 30 d respectively. Among these organic compounds, the relative content of 21, 24 and 29 kinds was more than 0.20% respectively. The organic compounds from three growth stages can be divided into eight types, i.e. acids, phenols, hydrocarbons, esters, alcohols, amines, ketones, benzene and other heterocyclic. The esters is the largest proportion and the total relative content in three growth stages is 67.29%, 56.07% and 59. 51%, respectively. There existed 13 kinds of substances in all of three growth stages. There is 3, 5 and 12 kind＇s unique material in the three growth stages respectively. In the organic compounds determined, 17 kinds have been proved by previous studies to have allelopathic effects. Among these 17 kinds, there are 9 kinds of substances in the 3 stages of growth. There are three kinds of substances in the two growth stages of flowering plant 30 d and seedling 30 d （or seedling 60 d）. There are two kinds of unique material in the growth stages of seedling 60 d, and there are three kinds of unique material in the growth stages of flowering plant 30 d.
出处
《西北农业学报》
CAS
CSCD
北大核心
2012年第8期175-181,206,共8页
Acta Agriculturae Boreali-occidentalis Sinica
基金
农业部公益性行业科研专项(200903025)
陕西省科技创新项目(2010NKC-07)
唐仲英育种基金项目
