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Paper Information

Journal:   PLANT ECOPHYSIOLOGY (ARSANJAN BRANCH)   fall 2017 , Volume 9 , Number 30 ; Page(s) 52 To 65.
 
Paper: 

Response of morpho physiological of maize to plant growth promoting rhizobacteria, Zinc fertilizer and irrigation interval

 
 
Author(s):  Ghanbari S ., MOOSAVI S.G.R., ZABIHI H., FAZELI ROSTAMPOOR M.
 
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Abstract: 
In order to study of water deficit stress and application of zinc fertilizer and two strains of rhizobacteria including Pseudomonas putida (Sp) and Pseudomonas fluorescens (Sf) on morphophysiological traits and seed yield of maize, an experiment was carried out as split plot-factorial design based on randomized complete blocks design with three replications in Mahvalat, Khorasan Razavi province, Iran in 2012. Irrigation intervals of 6, 9 and 12 day were as main plots and rhizobacteria (non inoculation, Sp and Sf) and Zinc fertilizer (0 and 50 kg Zinc sulphate ha-1) were as sub plots. Plant height, stem diameter, ear diameter and length, leaf rolling index, relative water content and seed yield were evaluated. The results indicated that water deficit stress decreased significantly all mentioned above traits. Also, PGPR inoculation increased all traits except in leaf rolling index. Zinc sulphate application significantly increased plant height, ear length and seed yield. As irrigation intervals increased from 6 to 12 day, leaf rolling index increased 3. 2 time and seed yield decreased 57. 3%, but zinc sulphate and Pseudomonas bacteria application significantly decreased leaf rolling index and significantly increased seed yield. Seed yield significantly affected by double interaction. In conclusion, zinc sulphate application and seed inoculation by Pseudomonas can be recommended for maize cultivation, especially in semi-arid and arid conditions.
 
Keyword(s): Corn,ear,microelement,Pseudomonas,relative water content,water stress
 
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