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中国农学通报

中国农学通报 ›› 2021, Vol. 37 ›› Issue (1): 15-20.doi: 10.11924/j.issn.1000-6850.casb2020-0393

所属专题： 园艺

• 农学·农业基础科学 • 上一篇    下一篇

甜菜连作土壤对甜菜幼苗生长影响及其化感物质成分分析

耿贵1,2(), 刘钰1, 李任任1, 杨瑞瑞1, 路正禹2, 於丽华2, 王宇光2()   

  1. 1黑龙江大学生命科学学院,哈尔滨 150080
    2黑龙江大学现代农业与生态环境,哈尔滨 150080
  • 收稿日期:2020-08-23 修回日期:2020-10-22 出版日期:2021-01-05 发布日期:2020-12-25
  • 通讯作者: 王宇光
  • 作者简介:耿贵,男,1963年出生,黑龙江牡丹江人,博士生导师,研究员,博士,研究方向：甜菜耕作与栽培。通信地址：150080 黑龙江省哈尔滨市学府路74号 黑龙江大学,Tel：0451-86608913,E-mail：genggui01@163.com。
  • 基金资助:
    国家自然科学基金“甜菜T510品系BvBHLH93转录因子功能及其耐盐调控机制分析”(31701487);国家糖料产业技术体系“甜菜种植制度”(CARS-170209);黑龙江省博士后科研启动金“转录因子BvWRKY16调控甜菜耐盐性的分子机制研究”;中国博士后科学基金(2020M670944);黑龙江省自然科学基金“转录因子BvWRKY62调控甜菜耐盐性的分子机理研究”(YQ2020CO37)

The Effect of Continuous Sugarbeet Cropping Soil on the Growth of Sugarbeet Seedlings and Analysis of Allelochemical Components

Geng Gui1,2(), Liu Yu1, Li Renren1, Yang Ruirui1, Lu Zhengyu2, Yu Lihua2, Wang Yuguang2()   

  1. 1College of Life Science, Heilongjiang University, Harbin 150080
    2College of Advanced Agriculture and Ecological Environment, Heilongjiang University, Harbin 150080
  • Received:2020-08-23 Revised:2020-10-22 Online:2021-01-05 Published:2020-12-25
  • Contact: Wang Yuguang

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摘要：

为探究甜菜化感物质成分,减轻甜菜连作带来的副作用,设置休闲土、连作一年的重茬土2个处理组,探究不同土壤对甜菜幼苗发芽率、染病率以及株高、茎粗等生长指标的影响。采用质谱联用(GC-MS)分析技术初步筛选了2种土壤中差异显著(P＜0.05)的化合物。结果表明：与休闲土相比,重茬土种植的甜菜幼苗发芽率没有受到显著影响,但是幼苗感染立枯病的概率大大增加,且达到显著水平。在株高、叶面积、地上部鲜重方面,休闲土种植和重茬土种植差异显著,但茎粗差异不显著(P＞0.05)。利用质谱联用技术,得出15种疑似的甜菜化感物质。甜菜连作土壤中的化感物质成分会对甜菜幼苗的生长造成一定的影响,筛选和鉴定疑似化感物质成分,对缓解甜菜连作障碍、提高甜菜产质量具有重要意义。

关键词: 甜菜, 化感物质, 连作障碍, GC-MS分析, 化感作用, 连作土, 休闲土

Abstract:

To explore the allelochemical components of sugar beet and reduce the side effects caused by continuous beet cropping, two treatments of fallow soil and continuous cropping soil for one year were set up to explore the effects of different soils on the germination rate, disease rate, plant height and stem thickness of sugar beet seedlings. Mass spectrometry (GC-MS) analysis technology was used, two kinds of soil compounds with significant differences (P<0.05) were initially screened. The results showed that: compared with fallow soil, the germination rate of beet seedlings planted in continuous soil was not significantly affected, but the chance of seedlings infected with blast disease was greatly increased and reached a significant level. In terms of plant height, leaf area and fresh weight above the ground, the difference between planting in fallow soil and planting in continuous soil was significant, but the difference in stem thickness was not significant (P＞0.05). Using mass spectrometry technology, 15 suspected sugar beet allelochemicals were obtained. The allelochemical components in continuous sugar beet cropping soil could have a certain impact on the growth of sugar beet seedlings. The screening and identification of suspected allelochemical components is of significance to alleviating the obstacles to continuous sugar beet cropping and improving the yield and quality of sugar beet.

Key words: sugar beet, allelochemicals, continuous cropping obstacles, GC-MS analysis, allelopathy, continuous cropping soil, fallow soil

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