不同磷水平下丛枝菌根真菌(AMF)对狗牙根生长与再生的影响

草业学报 ›› 2013, Vol. 22 ›› Issue (1): 46-52.

不同磷水平下丛枝菌根真菌(AMF)对狗牙根生长与再生的影响

叶少萍^1,2,曾秀华³,辛国荣^1*,白昌军³,罗仁峰⁴,刘新鲁²

1.有害生物控制与资源利用国家重点实验室广东省热带亚热带植物资源重点实验室中山大学生命科学学院,广东广州510275;
2.广州市园林科学研究所,广东广州510170;
3.中国热带农业科学院热带作物品种资源研究所农业部热带作物种质资源利用重点开放实验室,海南儋州571737;
4.常熟市山水园林景观艺术有限公司,江苏常熟215500

收稿日期:2012-01-18 出版日期:2013-01-25 发布日期:2013-02-20
通讯作者: E-mail:lssxgr@mail.sysu.edu.cn
作者简介:叶少萍(1985-),女,广东高州人,硕士。E-mail:yshp08@163.com
基金资助:
国家自然科学基金(31071357),广东省自然科学基金(9251027501000010)和广东省教育部产学研结合项目(2010B090400159)资助。

Effects of arbuscular mycorrhizal fungi (AMF) on growth and regrowth of bermudagrass under different P supply levels

YE Shao-ping^1,2, ZENG Xiu-hua³, XIN Guo-rong¹, BAI Chang-jun³, LUO Ren-feng⁴, LIU Xin-lu²

1.State Key Laboratory for Biocontrol, School of Life Sciences, Guangdong Key Laboratory of Plant Resources, Sun Yat-sen University, Guangzhou 510275, China;
2.Guangzhou Institute of Landscape Gardening, Guangzhou 510170, China;
3.Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Key Laboratory of Tropical Crops Germplasm Resources Utilization, Ministry of Agriculture, Danzhou 571737, China;
4.Changshu Landscape Garden Arts Co., Ltd, Changshu 215500, China

Received:2012-01-18 Online:2013-01-25 Published:2013-02-20

摘要/Abstract

摘要： 采用盆栽试验研究了3个施磷水平(20,40,100 mg/kg)下,接种丛枝菌根真菌(AMF)菌种摩西球囊霉和聚丛球囊霉对刈割后狗牙根生长与再生的影响。结果表明,1)狗牙根根系能与摩西球囊霉和聚丛球囊霉形成良好的共生关系,其中单一接种聚丛球囊霉菌种处理的侵染率最高。2)狗牙根地上部氮、磷浓度呈极显著正相关,暗示着氮、磷积累可能存在协同效应。3)4次刈割条件下,与AMF共生的狗牙根具有较高的再生速度和较大的生物量,表明菌根化有利于增强刈割后狗牙根的再生能力。4)施磷水平对狗牙根的生长与再生产生显著影响,尤其是土壤施磷量40 mg/kg比20或100 mg/kg更能显著增加刈割后地上部生物量的积累,并加快再生生长的速度。因此,建议在日常养护管理中,可根据狗牙根再生特性和养分吸收情况来接种AMF菌剂并进行适当施肥,以保证狗牙根的生长和增强其刈割后的再生能力。

Abstract: Effects of the arbuscular mycorrhizal fungi (AMF) Glomus mosseae and G. aggregatum, on the growth and regrowth of bermudagrass (Cynodon dactylon) when combined with P applications of 20, 40 or 100 mg/kg were examined in pot experiments. Both G. mosseae and G. aggregatum colonized roots of bermudagrass well and the colonization rate of G. aggregatum was higher than that of G. mossea. N concentration of shoots was positively correlated with P concentration (P<0.001), indicating a potential cooperative effect between N and P absorption in bermudagrass. Regrowth rate and shoot biomass were higher in mycorrhizal bermudagrass than in the control during four cutting periods. P application also benefited growth and regrowth of bermudagrass, especially at an application rate of 40 mg/kg. Thus, in order to enhance regrowth of bermudagrass, AMF inoculation and an appropriate supply of P will be needed for regrowth and nutrition absorption.

中图分类号:

叶少萍,曾秀华,辛国荣,白昌军,罗仁峰,刘新鲁. 不同磷水平下丛枝菌根真菌(AMF)对狗牙根生长与再生的影响[J]. 草业学报, 2013, 22(1): 46-52.

YE Shao-ping, ZENG Xiu-hua, XIN Guo-rong, BAI Chang-jun, LUO Ren-feng, LIU Xin-lu. Effects of arbuscular mycorrhizal fungi (AMF) on growth and regrowth of bermudagrass under different P supply levels[J]. Acta Prataculturae Sinica, 2013, 22(1): 46-52.

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