Year 2017, Volume 2, Issue 3
| Year : | 2017 |
| Volume : | 2 |
| Issue : | 3 |
| Authors : | Maria MALEVA, Galina BORISOVA, Olga KOSHCHEEVA, Olga SINENKO |
| Title : | BIOFERTILIZER BASED ON SILICATE SOLUBILIZING BACTERIA IMPROVES PHOTOSYNTHETIC FUNCTION OF BRASSICA JUNCEA |
| Abstract : | Usage of biofertilizers is one of the important components of integrated nutrient management, as they are renewable source of plant nutrients, ecologically safe compared to chemical fertilizers and cost effective. Silicate solubilizing bacteria (SSB) can play an efficient role not only in solubilizing insoluble forms of silicates but also potassium and phosphates, hence increasing soil fertility and thereby enhancing plant productivity. The aim of this study was to investigate the influence of SSB-enriched biofertilizer on the structural and functional parameters of photosynthetic apparatus of Brassica juncea (L.) Czern. The pure culture of SSB was isolated from the clay substrate, cultivated on Zak–Alexandrov medium and identified as Bacillus sp. To obtain the biofertilizer, SSB culture (0.6*108 cfu mL-1) was mixed with steriled peat (1:1, v/w) and dried at 35–40°C. Plants were grown from seeds during two months in the pots with adding SSB-enriched biofertilizer to the mixture of clay and soil (1:10, w/w). The clay substrate plus peat without SSB was used as a control. It was found that addition of SSB-enriched biofertilizer to clay substrate significantly increased the content of total nitrogen, phosphorus and potassium in the leaves of B. juncea. The thickness of mesophyllic layer and the number of mesophyll cells were increased on average by 24 %. It was correlated with a sharp increase of photosynthetic pigment content and CO2 uptake (1.5–2.0 times). We can conclude that SSB-enriched biofertilizer improves the photosynthetic function of B. juncea. |
| For citation : | Maleva, M., Borisova, G., Koshcheeva, O., Sinenko, O. (2017). Biofertilizer based on silicate solubilizing bacteria improves photosynthetic function of Brassica juncea. AGROFOR International Journal, Volume 2. Issue No. 3. pp. 13-19. DOI: 10.7251/AGRENG1703013M |
| Keywords : | biofertilizer, silicate solubilizing bacteria, Indian mustard, photosynthesis |
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ISSN 2490-3434 (Printed)
ISSN 2490-3442 (Online)
ISSN 2490-3442 (Online)
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