Effects of Two Species of Pseudomonas and Nitrogen Levels on Dry Matter, Chlorophyll Index and N and Zn Uptake by Spinach Plant

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Kalantari Afsaneh; ALIASGHARZAD NASSER; NAJAFI NOSRATOLLAH

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Journal: APPLIED SOIL RESEARCH Year:2018 | Volume:6 | Issue:1 Page(s): 62-72

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Information Journal Paper

Title

Effects of Two Species of Pseudomonas and Nitrogen Levels on Dry Matter, Chlorophyll Index and N and Zn Uptake by Spinach Plant

Author(s)

Kalantari Afsaneh | ALIASGHARZAD NASSER | NAJAFI NOSRATOLLAH | Issue Writer Certificate

Keywords

Chlorophyll indexQ2

NitrogenQ1

PseudomonasQ1

SpinachQ2

ZincQ2

Abstract

Pseudomonas species are usually considered as plant growth promoting bacteria which in combination with Nitrogen fertilizers could exert beneficial effects on growth and nutrients uptake by plants. It seems that by using these bacteria and Nitrogen fertilizer we will be able to improve growth and nutrient uptake by Spinach plant as an important vegetative in human diet. To achieve this purpose, in a factorial experiment on the basis of randomized complete blocks design with three replications, Spinach plant (Spinacia oleracea L. ) were inoculated with Pseudomons fluorescens or P. putida or left un-inoculated as control. Three levels of Nitrogen (0, 125 and 250 mg N Kg-1) as urea were applied to the pots containing 2 kg of sterile soil. Statistical analysis showed that with increasing levels of Nitrogen in soil from 0 to 250 mg kg-1, Zn uptake, leaf Chlorophyll index and plant dry weight were significantly increased. By bacterial inoculation, shoot and root dry weights of Spinach showed significant increase compared to the nonbacterial control and shoot and root dry weights were enhanced by 20% and 28. 1% in plants inoculated with P. fluorescens compared to the non-bacterial control. Leaf Chlorophyll index was increased by 22. 2% and 13. 8% in P. putida and P. fluorescens treated plants, respectively compared to the control. Total N content in root and shoot of Spinach was significantly increased in bacterial treatments especially in P. fluorescens treated plants compared to the non-bacterial control. Zn content in shoot was significantly decreased in plant inoculated with P. putida compared to the non-bacterial control. Based on the result obtained in this study, P. fluorescens caused a marked increase in growth and N uptake by development of plant root system and increasing water and nutrients uptake efficiency. Moreover, Zn uptake in Spinach plant may improve through siderophore production.

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APA: Copy

Kalantari, Afsaneh, ALIASGHARZAD, NASSER, & NAJAFI, NOSRATOLLAH. (2018). Effects of Two Species of Pseudomonas and Nitrogen Levels on Dry Matter, Chlorophyll Index and N and Zn Uptake by Spinach Plant. APPLIED SOIL RESEARCH, 6(1 ), 62-72. SID. https://sid.ir/paper/261853/en

Vancouver: Copy

Kalantari Afsaneh, ALIASGHARZAD NASSER, NAJAFI NOSRATOLLAH. Effects of Two Species of Pseudomonas and Nitrogen Levels on Dry Matter, Chlorophyll Index and N and Zn Uptake by Spinach Plant. APPLIED SOIL RESEARCH[Internet]. 2018;6(1 ):62-72. Available from: https://sid.ir/paper/261853/en

IEEE: Copy

Afsaneh Kalantari, NASSER ALIASGHARZAD, and NOSRATOLLAH NAJAFI, “Effects of Two Species of Pseudomonas and Nitrogen Levels on Dry Matter, Chlorophyll Index and N and Zn Uptake by Spinach Plant,” APPLIED SOIL RESEARCH, vol. 6, no. 1 , pp. 62–72, 2018, [Online]. Available: https://sid.ir/paper/261853/en

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