Allelopathic Effects of Euphorbia jolkinii on Seed Germination and Seedling Growth of Alfalfa

doi:10.11733/j.issn.1007-0435.2022.02.017

Acta Agrestia Sinica ›› 2022, Vol. 30 ›› Issue (2): 394-402.DOI: 10.11733/j.issn.1007-0435.2022.02.017

Allelopathic Effects of Euphorbia jolkinii on Seed Germination and Seedling Growth of Alfalfa

LI Yan-fei¹, CHU Xiao-hui¹, LI Jia-yi², MA Zu-yan¹, NIU Qiong-mei¹, SHAN Gui-lian¹

1. College of animal science and technology, Yunnan Agricultural University, Kunming, Yunnan Province 650201, China;
2. Dezhou Qingyun County Natural Resources Bureau, Dezhou, Shandong Province 253700, China

Received:2021-08-09 Revised:2021-09-22 Published:2022-03-10

大狼毒对紫花苜蓿种子萌发及幼苗生长的化感效应研究

李彦飞¹, 初晓辉¹, 李嘉懿², 马祖艳¹, 牛琼梅¹, 单贵莲¹

1. 云南农业大学动物科学技术学院, 云南昆明 650201;
2. 德州市庆云县自然资源局, 山东德州 253700

通讯作者: 单贵莲,E-mail:shanguilian8203@126.com
作者简介:李彦飞(1996-),男,云南富源人,硕士研究生,主要从事草地资源保护与利用研究,E-mail:3309707313@qq.com;李嘉懿(1994-),女,山东德州人,硕士研究生,主要从事草地资源保护与利用研究,E-mail:1321311865@qq.com
基金资助:
国家自然科学基金(31501999)；云南省万人计划青年拔尖人才专项项目资助

Abstract

Abstract: To explore whether Euphorbia jolkinii has an allelopathic effect on other species and promote the restoration and management of degraded grassland in the spreading area of E. jolkinii,the allelopathic effect of E. jolkinii on seed germination and seedling growth of alfalfa were studied by dish filter paper method and hole disc culture method. The results showed that the allelopathic effects of E. jolkinii on alfalfa seed germination rate and germination process were “inhibition”,and the inhibition intensity increased with the increase of extract concentration. During the decomposition process of stem,leaf,and root debris of E. jolkinii,the root activity and soluble sugar content of alfalfa decreased,and the MDA content increased,which significantly inhibited the growth of alfalfa seedlings (P<0.05),and the inhibition intensity increased with the increase of dosage. The root-soil treatment of E. jolkinii had no effect on the growth of alfalfa seedlings. The comprehensive allelopathic effects of root-soil,root,stem,and leaf of E. jolkinii on the germination and growth of alfalfa were in the order of root > stem and leaf > root soil.

Key words: Euphorbia jolkinii, Alfalfa, Seed Germination, Seedling growth, Allelopathic intensity

摘要： 为探究大狼毒(Euphorbia jolkinii)是否会对其它物种产生化感作用，促进大狼毒蔓延区退化草地的恢复治理，本研究以紫花苜蓿(Medicago sativa)为受体材料，采用培养皿滤纸法和穴盘培养法，开展大狼毒对紫花苜蓿种子萌发及幼苗生长的化感效应研究，结果表明：大狼毒对紫花苜蓿种子萌发率和萌发进程体现为“化感抑制作用”，且抑制作用随浸提液浓度的增加而增强。大狼毒茎叶、根粉碎物在腐解过程中，会导致紫花苜蓿根系活力和可溶性糖含量降低，丙二醛(Malondialdehyde,MDA)含量升高，进而显著抑制紫花苜蓿幼苗的生长(P<0.05)，且抑制作用随用量的增加而增强。大狼毒根部土壤对紫花苜蓿幼苗生长无显著影响。大狼毒根部土壤、根、茎叶对紫花苜蓿萌发生长的综合化感效应强弱顺序为：根>茎叶>根部土壤。

关键词: 大狼毒, 紫花苜蓿, 种子萌发, 幼苗生长, 化感效应

CLC Number:

S963.22+3.3

LI Yan-fei, CHU Xiao-hui, LI Jia-yi, MA Zu-yan, NIU Qiong-mei, SHAN Gui-lian. Allelopathic Effects of Euphorbia jolkinii on Seed Germination and Seedling Growth of Alfalfa[J]. Acta Agrestia Sinica, 2022, 30(2): 394-402.

李彦飞, 初晓辉, 李嘉懿, 马祖艳, 牛琼梅, 单贵莲. 大狼毒对紫花苜蓿种子萌发及幼苗生长的化感效应研究[J]. 草地学报, 2022, 30(2): 394-402.

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Allelopathic Effects of Euphorbia jolkinii on Seed Germination and Seedling Growth of Alfalfa

大狼毒对紫花苜蓿种子萌发及幼苗生长的化感效应研究

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