Effects of plant growth promoting rhizobacteria (PGPR) on rooting and root growth of kiwifruit (Actinidia deliciosa) stem cuttings

Abstract

The effects of plant growth promoting rhizobacteria (PGPR) on the rooting and root growth of semi-hardwood and hardwood kiwifruit stem cuttings were investigated. The PGPR used were Bacillus RC23, Paenibacillus polymyxa RC05, Bacillus subtilis OSU142, Bacillus RC03, Comamonas acidovorans RC41, Bacillus megaterium RC01 and Bacillus simplex RC19. All the bacteria showed indole-3-acetic acid (IAA) producing capacity. Among the PGPR used, the highest rooting ratios were obtained at 47.50% for semi-hardwood stem cuttings from Bacillus RC03 and Bacillus simplex RC19 treatments and 42.50% for hardwood stem cuttings from Bacillus RC03. As well, Comamonas acidovorans RC41 inoculations indicated higher value than control treatments. The results suggest that these PGPR can be used in organic nursery material production and point to the feasibility of synthetic auxin (IBA) replacement by organic management based on PGPR.

Chemical Composition of Seed Propagated Chestnut Genotypes from Northeastern Turkey

“…Mert and Erturk (2017) reported the crude fat amount chestnut cultivars ranged from 0.87 to 2.61%. Our results are in accordance with those obtained by Erturk et al (2006) for C. sativa and hybrid cultivars, for Italian cultivars (Sacchetti and Pinnavaia, 2005) and for Spanish cultivars (De La Montana Miguelez et al, 2004 andPereiraLorenzo et al, 2006) Previous studies indicated cultivar/genotype differences on chemical content of fruit species, including stone fruits, nuts, berries and subtropical fruits (Celik et al, 2007;Ercisli, 2009;Ercisli et al, 2010;Erturk et al, 2010;Saridas et al, 2016;Yazici and Sahin, 2016;Zorenc et al, 2016).…”

Effects of exogenously applied plant growth regulators in combination with PGPR on the physiology and root growth of chickpea (Cicer arietinum) and their role in drought tolerance

“…PGPR induced root growth may be attributed to production of Indole 3-Acetic Acid (IAA) and IAA had long been known for its stimulatory effects on root proliferation (Barazani and Friedman 1999). Erturk et al (2010) reported 47% increase in rooting ratio when plants were inoculated with PGPR strains. Gamalero et al (2004) reported the promontory effects of fluorescent pseudomonads and an arbuscular mycorrhizal fungus on the growth and root parameters of tomato plant.…”

Comparison of two halophyte species (Salsola soda and Portulaca oleracea)for salt removal potential under different soil salinity conditions

“…It includes the preparation of plant and animal products for people to use and their distribution to markets. Agriculture not only provides food and raw material but also employment opportunities to a very large proportion of the population (Sahin et al, 2002;Erturk et al, 2010;Cucci et al, 2016;Sorkheh and Khaleghi, 2016).…”