Article (Scientific journals)
Comparison of explant responses treated with leachate and leonardite sources of humic substances during in vitro rooting of woody plants.
Tahiri, Abdelghani; Destain, Jacqueline; Thonart, Philippe et al.
2016In Communications in Agricultural and Applied Biological Sciences, 81 (1), p. 158-165
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Keywords :
Landfill leachate; leonardite; humic substances; biostimulants
Abstract :
[en] As heterogeneous mixtures of compounds resulting from the physical, chemical and microbiological transformations of organic residues, humic substances (HS) are mostly recognized for their biostimulation of plant growth that firstly involve the root development and architecture before further putative improvement of nutrients uptakes. To avoid the interferences currently reported from external origins, the successive steps of rooting have been carried out using shoots and isolated leaves of birch and alder vitro-plants. Extracts issued from landfill leachate (LHS) has been compared to a stable formulation from leonardite ("Humifirst" 12% humic acid 3% and fulvic acid) commercialized by TRADECORP company's (HHS). Chemical analysis showed that LHS source typically contain much higher N (mainly as ammonium (93%) and chloride concentration than HHS. Used at low concentration (10 ppm) during root induction/initiation phase, both HS sources may be slightly unfavorable to the root formation (21% of reduction in primary root number) of alder but not of birch. While, in root elongation phase, there is an increase in the primary root length and lateral root number. The direct effects of HS on in vitro root development vary from one species to another depending on the root treatment stage. Results showed that both explants type response are equivalent in the development of a complete rooting system.
Disciplines :
Phytobiology (plant sciences, forestry, mycology...)
Agriculture & agronomy
Author, co-author :
Tahiri, Abdelghani ;  Université de Liège - ULiège > Doct. sc. agro. & ingé. biol.
Destain, Jacqueline ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Bio-industries
Thonart, Philippe ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Bio-industries
Ongena, Marc ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Bio-industries
Druart, Philippe;  CRA-W > Biotechnologie > Génie biologique
Language :
English
Title :
Comparison of explant responses treated with leachate and leonardite sources of humic substances during in vitro rooting of woody plants.
Publication date :
05 February 2016
Journal title :
Communications in Agricultural and Applied Biological Sciences
ISSN :
1379-1176
Publisher :
Universiteit Gent. Faculteit Landbouwkundige en Toegepaste Biologische Wetenschappen, Gent, Belgium
Volume :
81
Issue :
1
Pages :
158-165
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 10 March 2016

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