Effects of Rhizobacteria on Plant Development, Quality of Flowering and Bulb Mineral Contents in Hyacinthus orientalis L.

Size of bulbs is directly proportional to the quality of the flower, the commercial value of the bulb and getting more bulblet. The research was carried out to evaluate the effects of PGPR on plant growth parameters, flowering, bulb quality and bulb mineral contents in hyacinth (Hyacinthus orientalis L. cv. Aiolos) under greenhouse condition. In the study, there were 5 applications: (T-1) Pseudomonas putida strain RCK-42A, (T-2) Kluyvera cryocrescens strain RCK-113C, (T-3) Paenibacillus polymyxa strain RCK-12E, (T-4) Bacillus subtilis strain RCK-17C, and (T-5) Control (uninoculated bacteria). The surface-sterilized bulbs were incubated separately by shaking at 80 rpm for two hours at 28 degrees C to coat the bulbs with the bacteria. The chlorophyll content (50.02), leaf length (26.03 cm), leaf area (268.38cm(2)), flower fresh and dry weight (15.54 g and 0.88 g) in T-2 (Kluyvera cryocrescens strain RCK-113C) was found as the maximum according to other applications. The highest leaf width (6.37 cm) and the highest floret number were observed in T-4. It was shown that the maximum bulb diameter (42.57 mm), bulb length (40.01 mm) and bulb weight (12.01 g) were determined in T-2. The maximum N (2.90%), P (1.98%) and Ca (1.74%) were found in T-3. Maximum Fe (0.48 mg kg(-1)), Mn (151.20 mg kg(-1)) and Zn (35.28 mg kg(-1)) were found in T-1. Use of especially Kluyvera cryocrescens strain RCK-113C and Pseudomonas putida strain RCK-42A bacterial isolates may be effective in maintaining the sustainability of the environment and growing medium in the cultivation of hyacinth and also the development of bio fertilizer.