Influence of Arbuscular Mycorrhizal Fungus (Glomus etunicatum) with Lettuce Plants under Zinc Toxicity in Nutrient Solution

2007 ◽  
Vol 10 (14) ◽  
pp. 2363-2367 ◽  
Author(s):  
Shadi Farshian ◽  
Jalil Khara ◽  
Parviz Malekzadeh
Author(s):  
C. F. De Melo ◽  
E. W. F. Gomes ◽  
A. S. Messias

This work has the objective of evaluating the mycorrhizal colonization of Arbuscular Mycorrhizal Fungus - AMF Claroideoglomus etunicatum in Atriplex nummularia Lind. subjected to desalinator reject. The experiment was conducted in a greenhouse at the headquarters of Agronomic Institute of Pernambuco - IPA, Recife, Pernambuco, Brazil. The experimental design was randomized blocks with the treatments constituted in a factorial scheme of five levels of salinity in AC= 2.86 mS/cm; T1= 11.54 mS/cm; T2= 12.04 mS/cm; T3= 13.13 mS/cm and T4= 14.16 mS/cm, associated with the presence and absence of fungus, presence and absence of nutrient solution, and autoclaved and non-autoclaved soil. 8.0 g of Hoagland & Arnon complete nutrient solution was added every fortnight. After five months, the roots of the treatments were collected and the root colonization was evaluated. It was found that in all treatments the association between Claroiodeoglomus etunicatum and Atriplex nummularia was beneficial. The correlation was positive for the treatment T4 (Reject + 14 gNaCl) + AMF. Thus, it was observed that salinity had no negative effect on the association as well as on the growth of the vegetable.


Author(s):  
K. A. V. Da Silva ◽  
J. P. Oliveira ◽  
J. G. Fernandes ◽  
A. S. Messias

The objective of this work was to evaluate the effect of the inoculation of the arbuscular mycorrhizal fungus (AMF) Claroideoglomus etunicatum on the development of Salicornia ramosissima subjected to five treatments: water, desalinator reject, reject plus one dose (7 g) of NaCl, reject plus two doses of NaCl and reject plus three doses of NaCl. The experiment was conducted under greenhouse conditions at the Agronomic Institute of Pernambuco - IPA, in a completely randomized design, with autoclaved and non-autoclaved soil, with three replications. A dose corresponding to 1.0 mL ̸ kg of Hoagland & Arnon complete nutrient solution soil was added to each well and watered daily with the corresponding treatments. In the conduction of the experiment, polyethylene vessels with 8 kg of saline soil were used. The results showed that the reject with the intermediate doses (Reject + 1NaCl and Reject + 2NaCl) was more significant for the growth (17.16 cm and 17.37 cm respectively) of Salicornia ramosissima.


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