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首页> 外文期刊>Bioenergy research >Switchgrass Field Performance on Two Soils as Affected by Bacterization of Seedlings with Burkholderia phytofirmans Strain PsJN
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Switchgrass Field Performance on Two Soils as Affected by Bacterization of Seedlings with Burkholderia phytofirmans Strain PsJN

机译：伯克霍尔德氏菌植物PsJN菌株苗期细菌化对两种土壤柳枝田间性能的影响

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摘要

Switchgrass (Panicum virgatum L.) is a perennial warm season grass capable of growth on marginal lands without major inputs of water and fertilizers. However, full utilization of its agronomic potential as a bioenergy crop requires improvement of its stand establishment, disease resistance, and prevention of the biomass yield variation from year to year. Our program focuses on the utilization of beneficial bacterial endophytes to enhance switchgrass performance under a low-input production system on marginal lands. We demonstrated earlier that inoculation of switchgrass cv. Alamo with a growth promoting endophyte, Burkholderia phytofirmans strain PsJN (PsJN), can significantly enhance seedling vigor and plant growth under both in vitro and greenhouse conditions. In this study, we tested the effects of PsJN bacterization of switchgrass seedlings on stand establishment, plant growth, and biomass yield in three field experiments conducted over 2 years on highly fertile prime land, and on a former tobacco farm with low fertility soil. PsJN bacterization improved growth and development of switchgrass seedlings, significantly stimulated plant root and shoot growth, and tiller number on the low fertility soil (p < 0.001), and enhanced biomass accumulation on both poor (p < 0.001) and rich (p < 0.05) soils, with more effective stimulation of plant growth in low fertility soil than in high fertility soil. The study indicates the potential for the use of PsJN and/or other beneficial bacterial endophytes in the development of low-input switchgrass feedstock production systems.
机译：柳枝（（Panicum virgatum L.）是多年生的暖季草，能够在边缘土地上生长，而无需大量的水和肥料。但是，要充分利用其作为生物能源作物的农艺潜力，就需要改善其林分的建立，抗病性以及防止每年生物量产量变化。我们的计划重点是在边缘土地上的低投入生产系统下，利用有益的细菌内生菌来提高柳枝performance的性能。我们之前已证明了柳枝c cv的接种。具有生长促进性内生植物的阿拉莫植物伯克霍尔德氏菌植物PsJN（PsJN）可以在体外和温室条件下显着增强幼苗活力和植物生长。在这项研究中，我们在高肥沃的原始土地和低肥力土壤的前烟草农场进行了为期两年的三个田间试验，测试了柳枝P幼苗的PsJN杀菌对林分建立，植物生长和生物量产量的影响。 PsJN的细菌繁殖改善了柳枝seedling幼苗的生长和发育，显着刺激了低肥力土壤上的植物根和茎生长，分till数（p <0.001），并且增加了贫困（p <0.001）和富人（p <0.05）的生物量积累。低肥力土壤比高肥力土壤更有效地刺激植物生长。研究表明，在低投入柳枝switch原料生产系统的开发中，可能会使用PsJN和/或其他有益细菌内生菌。

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  • 来源
    《Bioenergy research》 |2015年第1期|440-449|共10页
  • 作者

    J. Scott Lowman; Alejandra Lava-Chavez; Seonhwa Kim-Dura; Barry Flinn; Jerzy Nowak; Chuansheng Mei;

  • 作者单位

    1.Department of Horticulture Virginia Tech Blacksburg VA 24060 USA 2.The Center for Sustainable and Renewable Resources Institute for Advanced Learning and Research Danville VA 24540 USA;

    2.The Center for Sustainable and Renewable Resources Institute for Advanced Learning and Research Danville VA 24540 USA;

    2.The Center for Sustainable and Renewable Resources Institute for Advanced Learning and Research Danville VA 24540 USA;

    1.Department of Horticulture Virginia Tech Blacksburg VA 24060 USA 2.The Center for Sustainable and Renewable Resources Institute for Advanced Learning and Research Danville VA 24540 USA;

    1.Department of Horticulture Virginia Tech Blacksburg VA 24060 USA;

    1.Department of Horticulture Virginia Tech Blacksburg VA 24060 USA 2.The Center for Sustainable and Renewable Resources Institute for Advanced Learning and Research Danville VA 24540 USA;

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  • 正文语种 eng
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  • 关键词

    Growth promotion Burkholderia phytofirmans strain PsJN Field studies Marginal lands Bioenergy crop Switchgrass;

    机译：生长促进伯克霍尔德氏菌植物PsJN菌株田间研究边缘土地生物能源作物柳枝Switch;

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