Branching, flowering and fruiting of Jatropha curcas treated with ethephon or benzyladenine and gibberellins
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Anais da Academia Brasileira de Ciências (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000300989 |
Resumo: | Jatropha curcas L. has been identified for biofuel production but it presents limited commercial yields due to limited branching and a lack of yield uniformity. The objective of this study was to evaluate the effects of single application of ethephon or a combination of 6-benzyladenine (BA) with gibberellic acid isomers A4 and A7 (GA4+7) on branch induction, flowering and fruit production in jatropha plants with and without leaves. Plants with and without leaves showed differences for growth and reproductive variables. For all variables except inflorescence set, there were no significant statistical interactions between the presence of leaves and plant growth regulators concentration. The total number of flowers per inflorescence was reduced as ethephon concentration was increased. As BA + GA4 +7 concentration increased, seed dry weight increased. Thus, ethephon and BA + GA4 +7 applications appeared to affect flowering and seed production to a greater extent than branching. The inability to discern significant treatment effects for most variables might have been due to the large variability within plant populations studied and thus resulting in an insufficient sample size. Therefore, data collected from this study were used for statistical estimations of sample sizes to provide a reference for future studies. |
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Anais da Academia Brasileira de Ciências (Online) |
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Branching, flowering and fruiting of Jatropha curcas treated with ethephon or benzyladenine and gibberellinsBA + GA4 + 7branchingethephonfloweringfruitingjatrophaJatropha curcas L. has been identified for biofuel production but it presents limited commercial yields due to limited branching and a lack of yield uniformity. The objective of this study was to evaluate the effects of single application of ethephon or a combination of 6-benzyladenine (BA) with gibberellic acid isomers A4 and A7 (GA4+7) on branch induction, flowering and fruit production in jatropha plants with and without leaves. Plants with and without leaves showed differences for growth and reproductive variables. For all variables except inflorescence set, there were no significant statistical interactions between the presence of leaves and plant growth regulators concentration. The total number of flowers per inflorescence was reduced as ethephon concentration was increased. As BA + GA4 +7 concentration increased, seed dry weight increased. Thus, ethephon and BA + GA4 +7 applications appeared to affect flowering and seed production to a greater extent than branching. The inability to discern significant treatment effects for most variables might have been due to the large variability within plant populations studied and thus resulting in an insufficient sample size. Therefore, data collected from this study were used for statistical estimations of sample sizes to provide a reference for future studies.Academia Brasileira de Ciências2016-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000300989Anais da Academia Brasileira de Ciências v.88 n.2 2016reponame:Anais da Academia Brasileira de Ciências (Online)instname:Academia Brasileira de Ciências (ABC)instacron:ABC10.1590/0001-3765201620140635info:eu-repo/semantics/openAccessCosta,Anne P.Vendrame,WagnerNietsche,SílviaCrane,JonathanMoore,KimberlySchaffer,Bruceeng2016-06-30T00:00:00Zoai:scielo:S0001-37652016000300989Revistahttp://www.scielo.br/aabchttps://old.scielo.br/oai/scielo-oai.php||aabc@abc.org.br1678-26900001-3765opendoar:2016-06-30T00:00Anais da Academia Brasileira de Ciências (Online) - Academia Brasileira de Ciências (ABC)false |
dc.title.none.fl_str_mv |
Branching, flowering and fruiting of Jatropha curcas treated with ethephon or benzyladenine and gibberellins |
title |
Branching, flowering and fruiting of Jatropha curcas treated with ethephon or benzyladenine and gibberellins |
spellingShingle |
Branching, flowering and fruiting of Jatropha curcas treated with ethephon or benzyladenine and gibberellins Costa,Anne P. BA + GA4 + 7 branching ethephon flowering fruiting jatropha |
title_short |
Branching, flowering and fruiting of Jatropha curcas treated with ethephon or benzyladenine and gibberellins |
title_full |
Branching, flowering and fruiting of Jatropha curcas treated with ethephon or benzyladenine and gibberellins |
title_fullStr |
Branching, flowering and fruiting of Jatropha curcas treated with ethephon or benzyladenine and gibberellins |
title_full_unstemmed |
Branching, flowering and fruiting of Jatropha curcas treated with ethephon or benzyladenine and gibberellins |
title_sort |
Branching, flowering and fruiting of Jatropha curcas treated with ethephon or benzyladenine and gibberellins |
author |
Costa,Anne P. |
author_facet |
Costa,Anne P. Vendrame,Wagner Nietsche,Sílvia Crane,Jonathan Moore,Kimberly Schaffer,Bruce |
author_role |
author |
author2 |
Vendrame,Wagner Nietsche,Sílvia Crane,Jonathan Moore,Kimberly Schaffer,Bruce |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Costa,Anne P. Vendrame,Wagner Nietsche,Sílvia Crane,Jonathan Moore,Kimberly Schaffer,Bruce |
dc.subject.por.fl_str_mv |
BA + GA4 + 7 branching ethephon flowering fruiting jatropha |
topic |
BA + GA4 + 7 branching ethephon flowering fruiting jatropha |
description |
Jatropha curcas L. has been identified for biofuel production but it presents limited commercial yields due to limited branching and a lack of yield uniformity. The objective of this study was to evaluate the effects of single application of ethephon or a combination of 6-benzyladenine (BA) with gibberellic acid isomers A4 and A7 (GA4+7) on branch induction, flowering and fruit production in jatropha plants with and without leaves. Plants with and without leaves showed differences for growth and reproductive variables. For all variables except inflorescence set, there were no significant statistical interactions between the presence of leaves and plant growth regulators concentration. The total number of flowers per inflorescence was reduced as ethephon concentration was increased. As BA + GA4 +7 concentration increased, seed dry weight increased. Thus, ethephon and BA + GA4 +7 applications appeared to affect flowering and seed production to a greater extent than branching. The inability to discern significant treatment effects for most variables might have been due to the large variability within plant populations studied and thus resulting in an insufficient sample size. Therefore, data collected from this study were used for statistical estimations of sample sizes to provide a reference for future studies. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-06-01 |
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=S0001-37652016000300989 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000300989 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/0001-3765201620140635 |
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 |
Academia Brasileira de Ciências |
publisher.none.fl_str_mv |
Academia Brasileira de Ciências |
dc.source.none.fl_str_mv |
Anais da Academia Brasileira de Ciências v.88 n.2 2016 reponame:Anais da Academia Brasileira de Ciências (Online) instname:Academia Brasileira de Ciências (ABC) instacron:ABC |
instname_str |
Academia Brasileira de Ciências (ABC) |
instacron_str |
ABC |
institution |
ABC |
reponame_str |
Anais da Academia Brasileira de Ciências (Online) |
collection |
Anais da Academia Brasileira de Ciências (Online) |
repository.name.fl_str_mv |
Anais da Academia Brasileira de Ciências (Online) - Academia Brasileira de Ciências (ABC) |
repository.mail.fl_str_mv |
||aabc@abc.org.br |
_version_ |
1754302862824833024 |