Iron Chelate Improves Rooting in Indole-3-Butyric Acid-Treated Rosemary (Rosmarinus officinalis) Stem Cuttings

Adventitious root formation in stem cuttings is affected by exogenous and endogenous factors. The study assessed the effect of Fe(III)-EDDHA (ethylenediamine-N,N-bis 2-hydroxyphenyl acetic acid) on the rooting of 4 indol-3-butyric acid (IBA)-treated hardwood cuttings of the aromatic and medicinal sp...

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Published inAgriculture (Basel) Vol. 12; no. 2; p. 210
Main Authors Izadi, Zeinab, Rezaei Nejad, Abdolhossein, Abadía, Javier
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.02.2022
Subjects
Acetic acid
Acids
Butyric acid
Cuttings
Dietary minerals
Ethylenediamine
hardwood cuttings
Hardwoods
Indole-3-butyric acid
Iron
iron chelates
Leaves
Low concentrations
Metabolism
Metabolites
Morphology
Nutrients
Perlite
Photosynthesis
Photosynthetic pigments
Pigments
Rooting
Roots
Rosmarinus officinalis
Sand
Sandy soils
Shoots
Soil mixtures
Survival
Iran
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Summary:Adventitious root formation in stem cuttings is affected by exogenous and endogenous factors. The study assessed the effect of Fe(III)-EDDHA (ethylenediamine-N,N-bis 2-hydroxyphenyl acetic acid) on the rooting of 4 indol-3-butyric acid (IBA)-treated hardwood cuttings of the aromatic and medicinal species Rosmarinus officinalis. Cuttings treated with 0, 1000, 2000 or 3000 mg L−1 IBA were placed in pots filled with sand:perlite mixture and irrigated daily with nutrient solution pH 5.8, containing 0, 5, 10 or 20 µM Fe(III)-EDDHA. Ten days later, the number of new emerging roots were recorded. After 20 days, leaf photosynthetic pigments and morphological traits, including root number, fresh (FW) and dry weight (DW), shoot FW and DW, mean length of the longest roots, number of new shoots and new growth in old shoots, were measured. Finally, plants were transplanted to pots filled with a sand:soil mixture and survival was measured after 10 days. Results indicate that Fe application promotes root emergence and improves root and shoot biomass, leaf photosynthetic pigment concentrations and survival percentage. This indicates that using low concentrations of Fe(III)-EDDHA (5–20 µM) in the growth medium could be a good management strategy to facilitate the production of vigorous R. officinalis plants from hardwood cuttings.
ISSN:2077-0472
2077-0472
DOI:10.3390/agriculture12020210