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Plant Growth-Promoting Rhizobacteria (Pgpr) Increase Yield, Growth And Nutrition Of Strawberry Under High-Calcareous Soil Conditions
Scopus
Toplam 123 atıf DOI
Plant growth promoting effects of Alcaligenes 637Ca, Staphylococcus MFDCa-1, MFDCa-2, Agrobacterium A18, Pantoea FF1 and Bacillus M3 were tested on strawberry cv. 'Aromas' based on yield, number, and weight of fruit, leaf area, vitamin C, total soluble solids (TSS), acidity and ionic composition of leaves under calcareous soil conditions. The results demonstrated that all of bacterial treatments significantly affected all parameters tested. The best result was obtained from 637Ca treatment, which significantly increased fruit yield, number and weight about 47.5, 34.7, and 9.4%, respectively, compared to control. Except for magnesium (Mg) and zinc (Zn) in the leaf, the concentrations of all plant tissue nutrients [nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), iron (Fe), copper (Cu), manganese (Mn), boron (B)] were significantly increased by bacterial treatments tested. The data in the present study showed that all bacterial treatments including Alcaligenes 637Ca, Staphylococcus MFDCa-1, MFDCa-2, Agrobacterium A18, Pantoea FF1, and Bacillus M3 to strawberry plants can ameliorative the deleterious effect of high lime on fruit yield, growth and nutrition. These results suggested that plant growth-promoting Rhizobacteria (PGPR) treatments could be offer an economic and simple means to increased plant resistance for high calcareous soil conditions. 2014 © Taylor & Francis Group, LLC.
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Mitigation Effects of Melatonin Applied to Cauliflower Seedlings Under Different Flooding Durations
Scopus
Havuzumuzda 15 atıf almış
Flooding stress is an important abiotic stress factor, restricting agricultural production and causing yield and quality losses. This study was carried out to measure the effects of melatonin (MEL) applications on plant growth and the physiological and biochemical changes associated with flooding stress in seedling cauliflower plants. Approximately one-month-old cauliflower seedlings were subjected to flooding stress (Flo) and compared with fully irrigated control plants. Three doses (0, 50, and 100 µM) of MEL were applied to the seedlings in the form of a spray, and the plants were harvested 10, 15, and 20 days after Flo and MEL treatments. Agronomic, physiological, and biochemical measurements were made from the plant samples taken after each harvest. The Flo applied to the cauliflower seedlings significantly restricted their growth, causing reductions in aboveground fresh and dry weight, under-ground fresh and dry weight, and leaf area of 68%, 58%, 45%, 62%, and 40%, respectively. Principal component analysis (PCA) revealed that the most important factor of the study was Flo. Plant growth parameters, leaf relative water content, chlorophyll b, stomatal conductance, actual photosynthetic efficiency, and chlorophyll fluorescence values gave the best results under full irrigation conditions; while under Flo conditions, malondialdehyde, peroxidase, hydrogen peroxidase, chlorophyll a, carotenoid, catalase, and leaf temperature exhibited significant changes. The MEL treatments had little effect in ameliorating stress conditions. In conclusion, the exposure of agricultural lands to flood stress is an important consideration when determining where cauliflower will be grown.
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Kurumlar (1)
Selçuk Üniversitesi
Selçuklu, Turkey