Evaluation of vegetation indices and plant growth regulator use on the rooting of azalea cuttings

Detalhes bibliográficos
Autor(a) principal: Hou,Ping-Cheng
Data de Publicação: 2020
Outros Autores: Lin,Kuan-Hung, Huang,Yen-Jung, Wu,Chun-Wei, Chang,Yu-Sen
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Horticultura Brasileira
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362020000200153
Resumo: ABSTRACT The objective of our study was to develop a protocol enabling the use of vegetation indices to evaluate the rooting of Azalea (Rhododendron pulchrum cv. Sweet) cuttings. Six root growth parameters were recorded after exposing those cuttings to rooting media for 47 days. Among plants with different soil-plant analysis development (SPAD) and normalized difference vegetation index (NDVI) values, those with higher values exhibited significantly higher number of roots, root length, and root dry weight, suggesting that reflectance indices were useful in measuring the root growth parameters of the cuttings. Another aim of this work was to study the effects of plant growth regulators (PGRs) on rooting for cutting propagation. Azalea cuttings were soaked in the treatments with indole-3-butyric acid (IBA) at 2,000 mg L-1 or combined with 1-naphthaleneacetic acid (NAA; 2,000 mg L-1), salicylic acid (SA; 10-4 M), and thiamine (TA; 800 mg L-1). The same observations as SPAD and NDVI on six different rooting parameters were recorded and analyzed after cutting’s exposure to rooting media for 99 days for the auxin test, and 62 days for the SA and TA tests. Compared to NAA alone, IBA enhanced root growth and development as determined by increases in all parameters, and therefore it was used thereafter. Successful results for the number of roots and root dry weight were achieved using azalea cuttings with a combination of IBA and SA. In addition, the mix of IBA and TA resulted in higher number of roots and length of root. These combined treatments are recommended for establishing stem cuttings to produce nursery plants of azalea.
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spelling Evaluation of vegetation indices and plant growth regulator use on the rooting of azalea cuttingsRhododendron pulchrumindole-3-butyric acidnaphthaleneacetic acidplant growth regulatorsalicylic acidthiamineABSTRACT The objective of our study was to develop a protocol enabling the use of vegetation indices to evaluate the rooting of Azalea (Rhododendron pulchrum cv. Sweet) cuttings. Six root growth parameters were recorded after exposing those cuttings to rooting media for 47 days. Among plants with different soil-plant analysis development (SPAD) and normalized difference vegetation index (NDVI) values, those with higher values exhibited significantly higher number of roots, root length, and root dry weight, suggesting that reflectance indices were useful in measuring the root growth parameters of the cuttings. Another aim of this work was to study the effects of plant growth regulators (PGRs) on rooting for cutting propagation. Azalea cuttings were soaked in the treatments with indole-3-butyric acid (IBA) at 2,000 mg L-1 or combined with 1-naphthaleneacetic acid (NAA; 2,000 mg L-1), salicylic acid (SA; 10-4 M), and thiamine (TA; 800 mg L-1). The same observations as SPAD and NDVI on six different rooting parameters were recorded and analyzed after cutting’s exposure to rooting media for 99 days for the auxin test, and 62 days for the SA and TA tests. Compared to NAA alone, IBA enhanced root growth and development as determined by increases in all parameters, and therefore it was used thereafter. Successful results for the number of roots and root dry weight were achieved using azalea cuttings with a combination of IBA and SA. In addition, the mix of IBA and TA resulted in higher number of roots and length of root. These combined treatments are recommended for establishing stem cuttings to produce nursery plants of azalea.Associação Brasileira de Horticultura2020-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362020000200153Horticultura Brasileira v.38 n.2 2020reponame:Horticultura Brasileirainstname:Associação Brasileira de Horticultura (ABH)instacron:ABH10.1590/s0102-053620200207info:eu-repo/semantics/openAccessHou,Ping-ChengLin,Kuan-HungHuang,Yen-JungWu,Chun-WeiChang,Yu-Seneng2020-06-01T00:00:00Zoai:scielo:S0102-05362020000200153Revistahttp://cms.horticulturabrasileira.com.br/ONGhttps://old.scielo.br/oai/scielo-oai.php||hortbras@gmail.com1806-99910102-0536opendoar:2020-06-01T00:00Horticultura Brasileira - Associação Brasileira de Horticultura (ABH)false
dc.title.none.fl_str_mv Evaluation of vegetation indices and plant growth regulator use on the rooting of azalea cuttings
title Evaluation of vegetation indices and plant growth regulator use on the rooting of azalea cuttings
spellingShingle Evaluation of vegetation indices and plant growth regulator use on the rooting of azalea cuttings
Hou,Ping-Cheng
Rhododendron pulchrum
indole-3-butyric acid
naphthaleneacetic acid
plant growth regulator
salicylic acid
thiamine
title_short Evaluation of vegetation indices and plant growth regulator use on the rooting of azalea cuttings
title_full Evaluation of vegetation indices and plant growth regulator use on the rooting of azalea cuttings
title_fullStr Evaluation of vegetation indices and plant growth regulator use on the rooting of azalea cuttings
title_full_unstemmed Evaluation of vegetation indices and plant growth regulator use on the rooting of azalea cuttings
title_sort Evaluation of vegetation indices and plant growth regulator use on the rooting of azalea cuttings
author Hou,Ping-Cheng
author_facet Hou,Ping-Cheng
Lin,Kuan-Hung
Huang,Yen-Jung
Wu,Chun-Wei
Chang,Yu-Sen
author_role author
author2 Lin,Kuan-Hung
Huang,Yen-Jung
Wu,Chun-Wei
Chang,Yu-Sen
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Hou,Ping-Cheng
Lin,Kuan-Hung
Huang,Yen-Jung
Wu,Chun-Wei
Chang,Yu-Sen
dc.subject.por.fl_str_mv Rhododendron pulchrum
indole-3-butyric acid
naphthaleneacetic acid
plant growth regulator
salicylic acid
thiamine
topic Rhododendron pulchrum
indole-3-butyric acid
naphthaleneacetic acid
plant growth regulator
salicylic acid
thiamine
description ABSTRACT The objective of our study was to develop a protocol enabling the use of vegetation indices to evaluate the rooting of Azalea (Rhododendron pulchrum cv. Sweet) cuttings. Six root growth parameters were recorded after exposing those cuttings to rooting media for 47 days. Among plants with different soil-plant analysis development (SPAD) and normalized difference vegetation index (NDVI) values, those with higher values exhibited significantly higher number of roots, root length, and root dry weight, suggesting that reflectance indices were useful in measuring the root growth parameters of the cuttings. Another aim of this work was to study the effects of plant growth regulators (PGRs) on rooting for cutting propagation. Azalea cuttings were soaked in the treatments with indole-3-butyric acid (IBA) at 2,000 mg L-1 or combined with 1-naphthaleneacetic acid (NAA; 2,000 mg L-1), salicylic acid (SA; 10-4 M), and thiamine (TA; 800 mg L-1). The same observations as SPAD and NDVI on six different rooting parameters were recorded and analyzed after cutting’s exposure to rooting media for 99 days for the auxin test, and 62 days for the SA and TA tests. Compared to NAA alone, IBA enhanced root growth and development as determined by increases in all parameters, and therefore it was used thereafter. Successful results for the number of roots and root dry weight were achieved using azalea cuttings with a combination of IBA and SA. In addition, the mix of IBA and TA resulted in higher number of roots and length of root. These combined treatments are recommended for establishing stem cuttings to produce nursery plants of azalea.
publishDate 2020
dc.date.none.fl_str_mv 2020-04-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362020000200153
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362020000200153
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/s0102-053620200207
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Associação Brasileira de Horticultura
publisher.none.fl_str_mv Associação Brasileira de Horticultura
dc.source.none.fl_str_mv Horticultura Brasileira v.38 n.2 2020
reponame:Horticultura Brasileira
instname:Associação Brasileira de Horticultura (ABH)
instacron:ABH
instname_str Associação Brasileira de Horticultura (ABH)
instacron_str ABH
institution ABH
reponame_str Horticultura Brasileira
collection Horticultura Brasileira
repository.name.fl_str_mv Horticultura Brasileira - Associação Brasileira de Horticultura (ABH)
repository.mail.fl_str_mv ||hortbras@gmail.com
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