Article: Plant growth promoting Rhizobacteria: Increase of vegetative and roots biomass in Portulacaria afra

Prisa Domenico *

CREA Research Centre for Vegetable and Ornamental Crops, Council for Agricultural Research and Economics, Via dei Fiori 8, 51012 Pescia, PT, Italy.
Research Article
GSC Advanced Research and Reviews, 2020, 02(02), 001-007.
Article DOI: 10.30574/gscarr.2020.2.2.0005
Publication history:
Received on 29 January 2020; revised on 04 February 2020; accepted on 06 February 2020
Abstract:
In this study, the ability of PGPRs to improve the growth and rooting of Portulacaria afra in pots was evaluated. Portulacaria afra is an interesting plant from a medicinal and ornamental point of view, but it shows some difficulties in the early stages of cultivation. The two experimental groups in cultivation were: i) group without beneficial micro-organisms (CTRL) (peat 60% + pumice 30% + chabazite 10%), irrigated with water and substrate previously fertilized; ii) group with beneficial micro-organisms (PGPR) (peat 60% + pumice 30% + chabazite 10%), irrigated with water and substrate previously fertilized, (1,5g TNC Bactorr S13 per litre of soil). The microorganisms in TNC S13 Bactorr were: Bacillus amyloliquefaciens, B. brevis, B. cirulans, B. coagulans, B. firmus, B. halodenitrificans, B. laterosporus, B. licheniformis, B. megaterium, B. mycoides, B. pasteuri, B. polymixa, B. subtilis (1.3 x 1011 cfu/Kg). All plants treated with Plant Growth Promoting Rhizobacteria (PGPR) showed a significant increase in the agronomic parameters analysed compared to the untreated control (CTRL), both in Portulacaria afra and in Portulacaria afra variegated. The results show that microorganisms are able to improve the absorption of water and nutrients by increasing the agronomic and physiological characteristics of plants. Very interesting aspects to improve agronomic quality, especially for those who cultivate plants from particular environments and that are poorly adapted to our climates and cultivation methods.
Keywords:
Succulent plants; Sustainable applications; Portulacaceae; Rhizosphere; PGPR
Full text article in PDF:
How to cite this article:
Prisa D. (2020). Plant growth promoting Rhizobacteria:  Increase of vegetative and roots biomass in Portulacaria afra. GSC Advanced Research and Reviews, 2(2), 01-07.

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