کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6297575 | 1617781 | 2016 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Increase in biomass of two woody species from a seasonal dry tropical forest in association with AMF with different phosphorus levels
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کلمات کلیدی
AMFTDWSDWRDWRWCPPFDVPDWUEWater use efficiency - بهره وری استفاده از آبGas exchange - تبادل گازphotosynthetic photon flux density - فتوسنتز تراکم شار فوتونPhosphorus - فسفرArbuscular mycorrhizal fungi - قارچ های میکوریزا آربوسکولارRelative water content - محتوای آب نسبیtranspiration rate - نرخ تنفسnet photosynthetic rate - نرخ فتوسنتزی خالصStomatal conductance - هدایت گرمایشیroot dry weight - وزن خشک ریشهshoot dry weight - وزن خشک ساقهtotal dry weight - وزن خشک کلvapor pressure deficit - کسری فشار بخار
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The study aimed at assessing whether there is association between arbuscular mycorrhizal fungi (AMF) and two woody species from a seasonal dry tropical forest, Poincianella pyramidalis and Cnidoscolus quercifolius, besides the occurrence of an increase in biomass under different availability of phosphorus (P) in the soil. The experimental design was completely randomized, with a factorial design with two mycorrhizal levels [inoculated (+AMF) and control (âAMF)] Ã six phosphorus levels (3, 9, 15, 21, 27, 33 mg dmâ3). The presence of mycorrhizal structures, mycorrhizal growth, mycorrhizal efficiency, leaf relative water content (RWC) and gas exchange were evaluated. +AMF plants of both species had mycorrhizal structures, while âAMF showed no structures. In P. pyramidalis, +AMF plants had benefits with increasing phosphorus level, while âAMF plants had increases biomass only at the P9 level if compared to the P3-AMF level. The total leaf area was correlated with total dry weight (TDW) in +AMF and âAMF plants. However, +AMF plants had more responses in RWC. In C. quercifolius, +AMF and âAMF plants did not differ in RWC and showed reductions in gas exchange with increased phosphorus level. However, these reductions were lower in +AMF plants, besides having a better performance over âAMF plants. The growth and mycorrhizal efficiency were higher at the P15 level, and relationship between total leaf area and TDW were significant only in +AMF plants. Thus, both species perform association with AMF and show increases in growth. The concentrations of phosphorus in the soil for P. pyramidalis (33 mg dmâ3) and C. quercifolius (15 mg dmâ3) are indicated for increased effectiveness of mycorrhization, promote increases in gas exchange and growth in +AMF plants.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Soil Ecology - Volume 102, June 2016, Pages 46-52
Journal: Applied Soil Ecology - Volume 102, June 2016, Pages 46-52
نویسندگان
G. Frosi, V.A. Barros, M.T. Oliveira, U.M.T. Cavalcante, L.C. Maia, M.G. Santos,