| 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 |
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| 引用本文： | 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. |
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| 作者姓名： | 叶少萍 曾秀华 辛国荣 白昌军 罗仁峰 刘新鲁 |
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| 作者单位： | 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 |
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| 基金项目： | 国家自然科学基金(31071357);广东省自然科学基金(9251027501000010);广东省教育部产学研结合项目(2010B090400159)资助 |
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| 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。
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| 关 键 词： | 丛枝菌根真菌 磷水平 狗牙根 再生 |
| 收稿时间： | 2012-01-18 |
Effects of arbuscular mycorrhizal fungi(AMF) on growth and regrowth of bermudagrass under different P supply levels |
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| YE Shao-ping
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ZENG Xiu-hua
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XIN Guo-rong
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BAI Chang-jun
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LUO Ren-feng
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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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| Authors: | YE Shao-ping ZENG Xiu-hua XIN Guo-rong BAI Chang-jun LUO Ren-feng LIU Xin-lu |
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| Institution: | 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) |
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| 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. |
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