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International Journal of Plant & Soil Science

International Journal of Plant & Soil Science, ISSN: 2320-7035,Vol.: 22, Issue.: 6

Original-research-article

Impact of Bacillus subtilis on Tomato Plants Growth and Some Biochemical Characteristics under Combined Application with Humic Fertilizer

 

V. N. Pishchik1*, N. I. Vorobyev2, Yu. V. Ostankova3, A. V. Semenov3, A. Totolian Areg3, A. A. Popov2, Y. V. Khomyakov1, O. R. Udalova1, D. V. Shibanov1, V. E. Vertebny1, V. I. Dubovitskaya1, O. V. Sviridova2, O. S. Walsh4 and S. Shafian4

1Agrophysical Research Institute of Russian Agricultural Academy, St. Petersburg, Russia.

2All-Russian Research Institute for Agricultural Microbiology of Russian Academy of Agricultural Science, St. Petersburg, Russia.

3Research Institute Pasteur, Russia.

4Department of Plant Sciences, University of Idaho, Parma, ID, USA.

 

Article Information

Editor(s):

(1) Abigail Ogbonna, Department of Plant Science and Technology, Faculty of Natural Sciences, University of Jos, Nigeria.

Reviewers:

(1) V. Vasanthabharathi, Annamalai University, India.

(2) Haluk Caglar Kaymak, Atatürk University, Turkey.

(3) Vijendra Mishra, Banaras Hindu University, India.

Complete Peer review History: http://www.sciencedomain.org/review-history/24593

 

Abstracts

 

In this study we investigated the mechanisms of action and effect of plant growth promoting rhizobacteria (PGPR) Bacillus subtilis No.2 when utilized alone and in conjunction with a humic fertilizer (HF). Different mechanisms of action of B. subtilis No.2 and HF Stimulife on tomato plants were identified in pot experiments under controlled conditions. PGPR B. subtilis No.2 was identified by using the16s rRNA gene sequence method. We applied factor analyses to evaluate differences in the responses of plants to the individual effects of B. subtilis No.2 and HF when they were used together. Auxin-producing B. subtilis No.2 enhanced tomato yield by increased average number of fruits per plant. Humic fertilizer Stimulife, which also contains auxins, improved tomato yield by increasing average fruit weight. As shown by factor analysis, the impact of weight coefficients for plant responses (across tomato varieties) to B. subtilis No.2 and Stimulife were 0.54 and 0.28, respectively, indicating a greater response to B. subtilis No.2 than to HF Stimulife. Combined use of Stimulife and B. subtilis No.2 had a positive impact on tomato yield, increasing fruit yield by 25-29%. Tomato fruit quality was improved by increasing the amounts of dry matter, carbohydrates, sugar-index acid, and ascorbic acid. Results suggest that HF Stimulife and B. subtilis No.2 could be successfully used to enhance tomato plant growth and yield under controlled conditions. We hypothesize that, along with direct impact, HF may also indirectly affect plants by stimulating PGPR.

 

Keywords :

PGPR Bacillus subtilis No.2; humic fertilizer; tomato physiological and biochemical characteristics.

 

Full Article - PDF    Page 1-12    Article Metrics

 

DOI : 10.9734/IJPSS/2018/41148

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