红砂与珍珠猪毛菜水浸提液对其幼苗生长的化感作用  

Allelopathic effects of aqueous extracts from Reaumuria soongorica and Salsola passerina on seedling growth

作　　者：王钰煐 种培芳[1] 张建喜 刘行行 包新光 王雪莹 WANG Yu-ying;CHONG Pei-fang;ZHANG Jian-xi;LIU Hang-hang;BAO Xin-guang;WANG Xue-ying(College of Forestry,Gansu Agricultural University,Lanzhou 730070,China)

机构地区：[1]甘肃农业大学林学院,甘肃兰州730070

出　　处：《草业学报》2024年第12期99-110,共12页Acta Prataculturae Sinica

基　　金：国家自然科学基金(32160407);甘肃省重点研究计划(23YFFA0065);草业开放项目(KLGE202215);甘肃省科技计划优秀博士项目(23JRRA1451);研究生创新之星项目(2023CXZX-643);博士科研启动基金(GAU-KYQD-2022-21)资助。

摘　　要：植物可以通过化感作用来增强自身的竞争能力。红砂和珍珠猪毛菜混生生长明显优于单生,这种现象是否与化感作用有关值得探讨。为此,本研究选取了一年生红砂和珍珠猪毛菜的幼苗作为试验材料,采用盆栽试验的方法,研究了红砂和珍珠猪毛菜不同器官水浸提液(0.02、0.04、0.06、0.08 g·mL^(-1))对其幼苗生长和生理的影响,以期为生态修复和保护荒漠生态系统提供理论依据。结果表明:在相同质量浓度下,红砂和珍珠猪毛菜根、茎和叶化感抑制的综合效应依次为叶>茎>根。整体上,红砂和珍珠猪毛菜的水浸提液在不同质量浓度下对其幼苗生长的化感作用强弱顺序基本一致,均为处理浓度在0.02 g·mL^(-1)时抑制作用最弱,处理浓度为0.08 g·mL^(-1)时抑制作用最强。总体而言,红砂各器官水浸提液处理对珍珠猪毛菜幼苗生长的抑制作用更强。综上,红砂与珍珠猪毛菜之间存在化感效应,因此,在荒漠地区建立人工植被时,应考虑种间的化感作用,并选择适当的种植方式以达到最佳的种植效果。Plants can enhance their competitiveness through allelopathy.It has been observed that the desert plant Reaumuria soongorica grows better with Salsola passerina than it does alone.The aim of this study was to determine whether this phenomenon is related to allelopathy.Pot experiments were conducted to determine the effects of aqueous extracts of different organs of 1-year-old R.soongorica and S.passerina plants at a range of concentrations(0.02,0.04,0.06,and 0.08 g∙mL^(-1))on the growth and physiology of seedlings.We found that at the same mass concentration,leaf extracts of R.soongorica and S.passerina had the strongest allelopathic inhibitory effect on plant growth,followed by stem extracts,and then root extracts.This order of allelopathic effects of aqueous extracts of R.soongorica and S.passerina on seedling growth was the same,on the whole,for all extract concentrations.The treatments at a concentration of 0.02 g∙mL^(-1)had the weakest inhibitory effects,and those at 0.08 g∙mL^(-1)had the strongest inhibitory effects.In general,the aqueous extracts of R.soongorica organs had a stronger inhibitory effect on the growth of S.passerina seedlings than the aqueous extracts of S.passerina organs had on R.soongorica seedlings.In summary,there is an allelopathic interaction between R.soongorica and S.passerina.Therefore,when establishing artificial vegetation in desert areas,allelopathy between species should be considered,and appropriate planting methods should be selected to achieve the best revegetation outcomes.These findings provide insight for planning the ecological restoration and protection of desert ecosystems.

关 键 词：红砂 珍珠猪毛菜 幼苗生长 化感效应 

分 类 号：Q945[生物学—植物学]