Impact of Different Phytohormones on Morphology, Yield and Cannabinoid Content of Cannabis sativa L.

The impact of exogenously applied plant growth regulators (PGR), 1-naphthalenaecetic acid (NAA), 6-benzylaminopurine (BAP), and a mixture of both (NAA/BAP-mix), was investigated in regard to plant height, length of axillary branches, number of internodes, biomass yield and cannabinoid content of thr...

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Autores principales: Burgel, Lisa, Hartung, Jens, Schibano, Daniele, Graeff-Hönninger, Simone
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7355821/
https://www.ncbi.nlm.nih.gov/pubmed/32521804
http://dx.doi.org/10.3390/plants9060725
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author Burgel, Lisa
Hartung, Jens
Schibano, Daniele
Graeff-Hönninger, Simone
author_facet Burgel, Lisa
Hartung, Jens
Schibano, Daniele
Graeff-Hönninger, Simone
author_sort Burgel, Lisa
collection PubMed
description The impact of exogenously applied plant growth regulators (PGR), 1-naphthalenaecetic acid (NAA), 6-benzylaminopurine (BAP), and a mixture of both (NAA/BAP-mix), was investigated in regard to plant height, length of axillary branches, number of internodes, biomass yield and cannabinoid content of three different phytocannabinoid-rich (PCR) Cannabis genotypes. The results showed that total plant height was significantly reduced under the application of NAA (28%), BAP (18%), and NAA/BAP-mix treated plants (15%). Axillary branch length was also significantly reduced by 58% (NAA) and 30% (NAA/BAP-mix). BAP did not significantly reduce the length of axillary branches. The number of internodes was reduced by NAA (19%), BAP (10%), and the NAA/BAP-mix (14%) compared to the untreated control. NAA application influenced the plant architecture of the tested cv. KANADA beneficially, resulting in a more compact growth habitus, while inflorescence yield (23.51 g plant(−1)) remained similar compared to the control (24.31 g plant(−1)). Inflorescence yield of v. 0.2x and cv. FED was reduced due to PGR application while cannabinoid content remained stable. Overall, the application of PGR could be used on a genotype-specific level to beneficially influence plant architecture and optimize inflorescence yield per unit area and thus cannabinoid yield, especially in the presence of space limitations under indoor cultivation.
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spelling pubmed-73558212020-07-23 Impact of Different Phytohormones on Morphology, Yield and Cannabinoid Content of Cannabis sativa L. Burgel, Lisa Hartung, Jens Schibano, Daniele Graeff-Hönninger, Simone Plants (Basel) Article The impact of exogenously applied plant growth regulators (PGR), 1-naphthalenaecetic acid (NAA), 6-benzylaminopurine (BAP), and a mixture of both (NAA/BAP-mix), was investigated in regard to plant height, length of axillary branches, number of internodes, biomass yield and cannabinoid content of three different phytocannabinoid-rich (PCR) Cannabis genotypes. The results showed that total plant height was significantly reduced under the application of NAA (28%), BAP (18%), and NAA/BAP-mix treated plants (15%). Axillary branch length was also significantly reduced by 58% (NAA) and 30% (NAA/BAP-mix). BAP did not significantly reduce the length of axillary branches. The number of internodes was reduced by NAA (19%), BAP (10%), and the NAA/BAP-mix (14%) compared to the untreated control. NAA application influenced the plant architecture of the tested cv. KANADA beneficially, resulting in a more compact growth habitus, while inflorescence yield (23.51 g plant(−1)) remained similar compared to the control (24.31 g plant(−1)). Inflorescence yield of v. 0.2x and cv. FED was reduced due to PGR application while cannabinoid content remained stable. Overall, the application of PGR could be used on a genotype-specific level to beneficially influence plant architecture and optimize inflorescence yield per unit area and thus cannabinoid yield, especially in the presence of space limitations under indoor cultivation. MDPI 2020-06-08 /pmc/articles/PMC7355821/ /pubmed/32521804 http://dx.doi.org/10.3390/plants9060725 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Burgel, Lisa
Hartung, Jens
Schibano, Daniele
Graeff-Hönninger, Simone
Impact of Different Phytohormones on Morphology, Yield and Cannabinoid Content of Cannabis sativa L.
title Impact of Different Phytohormones on Morphology, Yield and Cannabinoid Content of Cannabis sativa L.
title_full Impact of Different Phytohormones on Morphology, Yield and Cannabinoid Content of Cannabis sativa L.
title_fullStr Impact of Different Phytohormones on Morphology, Yield and Cannabinoid Content of Cannabis sativa L.
title_full_unstemmed Impact of Different Phytohormones on Morphology, Yield and Cannabinoid Content of Cannabis sativa L.
title_short Impact of Different Phytohormones on Morphology, Yield and Cannabinoid Content of Cannabis sativa L.
title_sort impact of different phytohormones on morphology, yield and cannabinoid content of cannabis sativa l.
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7355821/
https://www.ncbi.nlm.nih.gov/pubmed/32521804
http://dx.doi.org/10.3390/plants9060725
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