Effect of alternating temperature regimes on seed germination of guar [Cyamopsis tetragonoloba (L.) Taub.]
Autor(a) principal: | |
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Data de Publicação: | 2024 |
Outros Autores: | , |
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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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 |
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RCAAP |
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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 |
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mluisa.alvim@gmail.com |
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