Effect of alternating temperature regimes on seed germination of guar [Cyamopsis tetragonoloba (L.) Taub.]

Detalhes bibliográficos
Autor(a) principal: Reis, C.M.G.
Data de Publicação: 2024
Outros Autores: Justino, Carlos, Diogo, M.G.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.11/9191
Resumo: Guar [Cyamopsis tetragonoloba (L.) Taub.] 2n=14, is an annual crop that belongs to the Fabaceae family and has a spring–summer growth cycle. This species has been assuming increasing importance among agro-industrial crops due to the high galactomannan content of its seeds for which a multitude of food and non-food applications have been developed. Guar is a viable rotation crop for growers in Mediterranean areas and can result in diversification in crop production systems. The effects of four alternating day/night temperature regimens on C. tetragonoloba seed germination were tested: (T1) 23/15 °C, (T2) 21/13 °C, (T3) 19/ 11 °C, and (T4) 17/09 °C with a 16/08 h light/dark photoperiod, respectively. Seeds from two guar cultivars (RGC-0936 and RGC-1066) were used. Treatments consisted of four replicates of 50 seeds each, arranged in a split-plot design with temperatures as the main plot and cultivars as the subplot. The results showed that lower temperatures reduced guar seed germination. The highest germination percentages were obtained at the 21/13 °C and 23/15 °C temperature regimens, while a significant drop in germination percentage occurred for the 19/11 °C treatment, and the lowest germination percentages were observed at 17/09 °C. No statistically significant differences were found between the two cultivars studied for seed germination percentages. The interaction effects among the different alternative temperature regimes on seed germination and guar cultivars were not statistically significantly different. The values obtained at the 21/13 °C temperature treatment allow us to conclude that this regimen is the minimum acceptable combination of temperatures to program the sowing date.
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spelling Effect of alternating temperature regimes on seed germination of guar [Cyamopsis tetragonoloba (L.) Taub.]Cluster beanGuar sowingGuar cultivarsGuar cycleAlternative cropsGuar [Cyamopsis tetragonoloba (L.) Taub.] 2n=14, is an annual crop that belongs to the Fabaceae family and has a spring–summer growth cycle. This species has been assuming increasing importance among agro-industrial crops due to the high galactomannan content of its seeds for which a multitude of food and non-food applications have been developed. Guar is a viable rotation crop for growers in Mediterranean areas and can result in diversification in crop production systems. The effects of four alternating day/night temperature regimens on C. tetragonoloba seed germination were tested: (T1) 23/15 °C, (T2) 21/13 °C, (T3) 19/ 11 °C, and (T4) 17/09 °C with a 16/08 h light/dark photoperiod, respectively. Seeds from two guar cultivars (RGC-0936 and RGC-1066) were used. Treatments consisted of four replicates of 50 seeds each, arranged in a split-plot design with temperatures as the main plot and cultivars as the subplot. The results showed that lower temperatures reduced guar seed germination. The highest germination percentages were obtained at the 21/13 °C and 23/15 °C temperature regimens, while a significant drop in germination percentage occurred for the 19/11 °C treatment, and the lowest germination percentages were observed at 17/09 °C. No statistically significant differences were found between the two cultivars studied for seed germination percentages. The interaction effects among the different alternative temperature regimes on seed germination and guar cultivars were not statistically significantly different. The values obtained at the 21/13 °C temperature treatment allow us to conclude that this regimen is the minimum acceptable combination of temperatures to program the sowing date.CERNAS-IPCB [UIDB/00681/2020] is funding by Portuguese Foundation for Science and Technology.Repositório Científico do Instituto Politécnico de Castelo BrancoReis, C.M.G.Justino, CarlosDiogo, M.G.2024-10-16T15:15:05Z2024-092024-09-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.11/9191engREIS, C.M.G. ; JUSTINO, C. ; Diogo, M.G. (2024) - Effect of alternating temperature regimes on seed germination of guar [Cyamopsis tetragonoloba (L.) Taub.]. Australian Journal of Crop Science. Vol. 18:9, p. 535-538. DOI: https://doi.org/10.21475/ajcs.24.18.09.p621835-2707https://doi.org/10.21475/ajcs.24.18.09.p62info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-10-19T01:50:06Zoai:repositorio.ipcb.pt:10400.11/9191Portal AgregadorONGhttps://www.rcaap.pt/oai/openairemluisa.alvim@gmail.comopendoar:71602024-10-19T01:50:06Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Effect of alternating temperature regimes on seed germination of guar [Cyamopsis tetragonoloba (L.) Taub.]
title Effect of alternating temperature regimes on seed germination of guar [Cyamopsis tetragonoloba (L.) Taub.]
spellingShingle Effect of alternating temperature regimes on seed germination of guar [Cyamopsis tetragonoloba (L.) Taub.]
Reis, C.M.G.
Cluster bean
Guar sowing
Guar cultivars
Guar cycle
Alternative crops
title_short Effect of alternating temperature regimes on seed germination of guar [Cyamopsis tetragonoloba (L.) Taub.]
title_full Effect of alternating temperature regimes on seed germination of guar [Cyamopsis tetragonoloba (L.) Taub.]
title_fullStr Effect of alternating temperature regimes on seed germination of guar [Cyamopsis tetragonoloba (L.) Taub.]
title_full_unstemmed Effect of alternating temperature regimes on seed germination of guar [Cyamopsis tetragonoloba (L.) Taub.]
title_sort Effect of alternating temperature regimes on seed germination of guar [Cyamopsis tetragonoloba (L.) Taub.]
author Reis, C.M.G.
author_facet Reis, C.M.G.
Justino, Carlos
Diogo, M.G.
author_role author
author2 Justino, Carlos
Diogo, M.G.
author2_role author
author
dc.contributor.none.fl_str_mv Repositório Científico do Instituto Politécnico de Castelo Branco
dc.contributor.author.fl_str_mv Reis, C.M.G.
Justino, Carlos
Diogo, M.G.
dc.subject.por.fl_str_mv Cluster bean
Guar sowing
Guar cultivars
Guar cycle
Alternative crops
topic Cluster bean
Guar sowing
Guar cultivars
Guar cycle
Alternative crops
description Guar [Cyamopsis tetragonoloba (L.) Taub.] 2n=14, is an annual crop that belongs to the Fabaceae family and has a spring–summer growth cycle. This species has been assuming increasing importance among agro-industrial crops due to the high galactomannan content of its seeds for which a multitude of food and non-food applications have been developed. Guar is a viable rotation crop for growers in Mediterranean areas and can result in diversification in crop production systems. The effects of four alternating day/night temperature regimens on C. tetragonoloba seed germination were tested: (T1) 23/15 °C, (T2) 21/13 °C, (T3) 19/ 11 °C, and (T4) 17/09 °C with a 16/08 h light/dark photoperiod, respectively. Seeds from two guar cultivars (RGC-0936 and RGC-1066) were used. Treatments consisted of four replicates of 50 seeds each, arranged in a split-plot design with temperatures as the main plot and cultivars as the subplot. The results showed that lower temperatures reduced guar seed germination. The highest germination percentages were obtained at the 21/13 °C and 23/15 °C temperature regimens, while a significant drop in germination percentage occurred for the 19/11 °C treatment, and the lowest germination percentages were observed at 17/09 °C. No statistically significant differences were found between the two cultivars studied for seed germination percentages. The interaction effects among the different alternative temperature regimes on seed germination and guar cultivars were not statistically significantly different. The values obtained at the 21/13 °C temperature treatment allow us to conclude that this regimen is the minimum acceptable combination of temperatures to program the sowing date.
publishDate 2024
dc.date.none.fl_str_mv 2024-10-16T15:15:05Z
2024-09
2024-09-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.11/9191
url http://hdl.handle.net/10400.11/9191
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv REIS, C.M.G. ; JUSTINO, C. ; Diogo, M.G. (2024) - Effect of alternating temperature regimes on seed germination of guar [Cyamopsis tetragonoloba (L.) Taub.]. Australian Journal of Crop Science. Vol. 18:9, p. 535-538. DOI: https://doi.org/10.21475/ajcs.24.18.09.p62
1835-2707
https://doi.org/10.21475/ajcs.24.18.09.p62
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv mluisa.alvim@gmail.com
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