tailieunhanh - Plant growth-promoting rhizobacteria improved growth, nutrient, and hormone content of cabbage (Brassica oleracea) seedlings

A greenhouse experiment was conducted to observe the effects of Bacillus megaterium strain TV-91C, Pantoea agglomerans strain RK-92, and B. subtilis strain TV-17C inoculation on the growth, nutrient, and hormone content of cabbage seedlings. | Turkish Journal of Agriculture and Forestry Turk J Agric For (2014) 38: 327-333 © TÜBİTAK doi: Research Article Plant growth-promoting rhizobacteria improved growth, nutrient, and hormone content of cabbage (Brassica oleracea) seedlings 1 2 2, 3 4 4 2 Metin TURAN , Melek EKİNCİ , Ertan YILDIRIM *, Adem GÜNEŞ , Kenan KARAGÖZ , Recep KOTAN , Atilla DURSUN Department of Genetics and Bioengineering, Faculty of Engineering and Architecture, Yeditepe University, Kayışdağı, İstanbul, Turkey 2 Department of Horticulture, Faculty of Agriculture, Atatürk University, Erzurum, Turkey 3 Department of Soil Science, Faculty of Agriculture, Erciyes University, Kayseri, Turkey 4 Department of Plant Protection, Faculty of Agriculture, Atatürk University, Erzurum, Turkey 1 Received: Accepted: Published Online: Printed: Abstract: A greenhouse experiment was conducted to observe the effects of Bacillus megaterium strain TV-91C, Pantoea agglomerans strain RK-92, and B. subtilis strain TV-17C inoculation on the growth, nutrient, and hormone content of cabbage seedlings. The seeds of cabbage were incubated in flasks by shaking at 80 rpm for 2 h at 28 °C to coat the seeds with the rhizobacteria. Plant growth-promoting rhizobacteria (PGPR) treatments increased fresh and dry shoot and root weight, stem diameter, seedling height, chlorophyll reading values, and leaf area of cabbage seedlings compared with the control. Among the strains, B. megaterium TV-91C gave the greatest seedling nutrient content and growth parameters, although the maximum values for leaf area, gibberellic acid, salicylic acid, and indole acetic acid (IAA) contents of seedlings were obtained with the P. agglomerans RK-92 treatment. Seed inoculation with B. megaterium TV-91C increased fresh and dry shoot and root weight by , , , and , respectively. Inoculations also increased the