Germination studies on tabebuia impetiginosa mart. seeds
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| Format: | Artículo científico |
| Language: | en |
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Universidade Federal de Lavras
2004
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| _version_ | 1866817257065152512 |
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| author | José Márcio Faria Rocha |
| author_facet | José Márcio Faria Rocha |
| contents | Germination studies on tabebuia impetiginosa mart. seeds José Márcio Faria Rocha Edvaldo Amaral da Silva Aparecido Antônio Cláudio Davide Daniel Melo Leão Bandeira de Guilherme Abreu Barbosa de Agrociencias ipê seed roxo germination gibberellins Seed germination and seedling production of native forest tree species are animportant step in ex situ conservation programs and in the reforestation with ecologicalpurposes. Therefore, understanding seed germination and its regulation is mandatory for thecomplete success of the conservation programs and revegetation techniques. Thus,morphological studies, temperature requirements for seed germination and its control bygibberellins (GAs) were studied in Tabebuia impetiginosa (ipê-roxo) seeds. The besttemperature for germination under constant light was 30oC. The imbibition of T. impetiginosaseeds followed the common triphasic pattern, with most of the seeds attaining phase II at 24hours and phase III at 72 hours of imbibition. Visible germination, as radicle elongation,started at 30 hours in water-imbibed seeds and at 24 hours in GA-imbibed seeds. Seedsimbibed in Paclobutrazol, an inhibitor of GA biosynthesis, failed to germinate. However,application of exogenous gibberellins overcame inhibition and allowed germination,suggesting that GAs are regulators of Tabebuia impetiginosa seed germination. The resultssuggested that germination in Tabebuia impetiginosa seeds is controlled by elongation of theradicle and gibberellins may play an important role in regulating it. The possible role ofgibberellins is discussed 2004 artículo científico 0104-7760 https://www.redalyc.org/articulo.oa?id=74410101 en http://www.redalyc.org/revista.oa?id=744 CERNE application/pdf Universidade Federal de Lavras CERNE (Brasil) Num.1 Vol.10 |
| format | Artículo científico |
| id | redalyc_74410101 |
| language | en |
| publishDate | 2004 |
| publisher | Universidade Federal de Lavras |
| spellingShingle | Germination studies on tabebuia impetiginosa mart. seeds José Márcio Faria Rocha Agrociencias ipê seed roxo germination gibberellins Germination studies on tabebuia impetiginosa mart. seeds José Márcio Faria Rocha Edvaldo Amaral da Silva Aparecido Antônio Cláudio Davide Daniel Melo Leão Bandeira de Guilherme Abreu Barbosa de Agrociencias ipê seed roxo germination gibberellins Seed germination and seedling production of native forest tree species are animportant step in ex situ conservation programs and in the reforestation with ecologicalpurposes. Therefore, understanding seed germination and its regulation is mandatory for thecomplete success of the conservation programs and revegetation techniques. Thus,morphological studies, temperature requirements for seed germination and its control bygibberellins (GAs) were studied in Tabebuia impetiginosa (ipê-roxo) seeds. The besttemperature for germination under constant light was 30oC. The imbibition of T. impetiginosaseeds followed the common triphasic pattern, with most of the seeds attaining phase II at 24hours and phase III at 72 hours of imbibition. Visible germination, as radicle elongation,started at 30 hours in water-imbibed seeds and at 24 hours in GA-imbibed seeds. Seedsimbibed in Paclobutrazol, an inhibitor of GA biosynthesis, failed to germinate. However,application of exogenous gibberellins overcame inhibition and allowed germination,suggesting that GAs are regulators of Tabebuia impetiginosa seed germination. The resultssuggested that germination in Tabebuia impetiginosa seeds is controlled by elongation of theradicle and gibberellins may play an important role in regulating it. The possible role ofgibberellins is discussed 2004 artículo científico 0104-7760 https://www.redalyc.org/articulo.oa?id=74410101 en http://www.redalyc.org/revista.oa?id=744 CERNE application/pdf Universidade Federal de Lavras CERNE (Brasil) Num.1 Vol.10 |
| title | Germination studies on tabebuia impetiginosa mart. seeds |
| topic | Agrociencias ipê seed roxo germination gibberellins |
| url | https://www.redalyc.org/articulo.oa?id=74410101 |