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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
06/08/1998 |
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Data da última atualização: |
06/08/1998 |
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Autoria: |
MOURA, V. P. G. |
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Título: |
Altitudional variation in Eucalyptus urophylla S.T Blake. |
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Ano de publicação: |
1977 |
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Fonte/Imprenta: |
Melbourne: University of Melbourne, 1977. |
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Páginas: |
168p. |
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Idioma: |
Inglês |
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Conteúdo: |
Eucalyptus urophylla S.T. Blake is a tropical species occurring naturally in a group of islands of the Lesser Sunda Archipelago, beteween 6 and 10 latitude Sourth and between 188 and 128 longitude East. E. urophylla grows in a wide range of soils from almost sea level to 2980 meters in altitude. The climate ranges from hot to cool tropical conditions with a pronounced dry seasson of about three months in the winter. A study was made of genetic variation in E. urophylla taken from an altitudional transect mostly in East Timor with the exception of one seed sample which came from 600m altitude in the nearby island of pantar. The physiological basis of the genetic variation with altitude was examined by growing seedlings fram six altitudes, 600, 1200, 1500, 2100m and 2740m, under controlled conditions. The seeds were found to vary in size with altitude, being larger in the provenances from higher altitudes. Cotyledon size was dependent on seed size and strongly affected the early seedling growth, larger cotyledons resulting in larger seedlings up to four weeks of age. After four weeks the positive relationship of cotyledon size and seedling growth changed, firstly disappearing in the six-week-old seedlings then becaming negative in seedlings at eight weeks of age. The germination of seeds in a range of constant temperature (10 to 40) showed that all provenances germinated equally weel between 20 and 32 C, with an optium around 31C. These was a slightly superior rate of germination of the high altitude provences at the lawest temperature regime. Seedlings grown at four temperatures (12, 20, 25 and 30 C) fram 12 to 22 weeks age showed that all provenances grew best at the two highest temperatures. Howeres, differences were found between provenances with a trend to decreased height and dry weight with increasing altitude. This trend was associated with changes in certain characters. Leaf size and internode length decreased with rise in altitude of seed provenance while leaf thickness increased with altitude. Two conclusions are drawn with regard to field plantations o f E. urophylla in the tropics. The firsts is that seedling selection shoud be delayed until the age at least eight weeks in order to avoid the overriding influence of seed and cotyledon size the early growth of seedlings. The second is that low altitude populations are better adapted to grow in high temperature conditions, but high altitude populations are likely to be more successful in the cool conditions found at high altitudes. MenosEucalyptus urophylla S.T. Blake is a tropical species occurring naturally in a group of islands of the Lesser Sunda Archipelago, beteween 6 and 10 latitude Sourth and between 188 and 128 longitude East. E. urophylla grows in a wide range of soils from almost sea level to 2980 meters in altitude. The climate ranges from hot to cool tropical conditions with a pronounced dry seasson of about three months in the winter. A study was made of genetic variation in E. urophylla taken from an altitudional transect mostly in East Timor with the exception of one seed sample which came from 600m altitude in the nearby island of pantar. The physiological basis of the genetic variation with altitude was examined by growing seedlings fram six altitudes, 600, 1200, 1500, 2100m and 2740m, under controlled conditions. The seeds were found to vary in size with altitude, being larger in the provenances from higher altitudes. Cotyledon size was dependent on seed size and strongly affected the early seedling growth, larger cotyledons resulting in larger seedlings up to four weeks of age. After four weeks the positive relationship of cotyledon size and seedling growth changed, firstly disappearing in the six-week-old seedlings then becaming negative in seedlings at eight weeks of age. The germination of seeds in a range of constant temperature (10 to 40) showed that all provenances germinated equally weel between 20 and 32 C, with an optium around 31C. These was a slightly superior rate of germinat... Mostrar Tudo |
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Palavras-Chave: |
Eucalyptus erophylla; Genetic cariation. |
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Thesagro: |
Altitude; Eucalipto; Plântula; Semente; Variação Genética. |
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Thesaurus Nal: |
seedlings; seeds. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03115nam a2200229 a 4500
001 1558303
005 1998-08-06
008 1977 bl uuuu m 00u1 u #d
100 1 $aMOURA, V. P. G.
245 $aAltitudional variation in Eucalyptus urophylla S.T Blake.
260 $aMelbourne: University of Melbourne$c1977
300 $a168p.
520 $aEucalyptus urophylla S.T. Blake is a tropical species occurring naturally in a group of islands of the Lesser Sunda Archipelago, beteween 6 and 10 latitude Sourth and between 188 and 128 longitude East. E. urophylla grows in a wide range of soils from almost sea level to 2980 meters in altitude. The climate ranges from hot to cool tropical conditions with a pronounced dry seasson of about three months in the winter. A study was made of genetic variation in E. urophylla taken from an altitudional transect mostly in East Timor with the exception of one seed sample which came from 600m altitude in the nearby island of pantar. The physiological basis of the genetic variation with altitude was examined by growing seedlings fram six altitudes, 600, 1200, 1500, 2100m and 2740m, under controlled conditions. The seeds were found to vary in size with altitude, being larger in the provenances from higher altitudes. Cotyledon size was dependent on seed size and strongly affected the early seedling growth, larger cotyledons resulting in larger seedlings up to four weeks of age. After four weeks the positive relationship of cotyledon size and seedling growth changed, firstly disappearing in the six-week-old seedlings then becaming negative in seedlings at eight weeks of age. The germination of seeds in a range of constant temperature (10 to 40) showed that all provenances germinated equally weel between 20 and 32 C, with an optium around 31C. These was a slightly superior rate of germination of the high altitude provences at the lawest temperature regime. Seedlings grown at four temperatures (12, 20, 25 and 30 C) fram 12 to 22 weeks age showed that all provenances grew best at the two highest temperatures. Howeres, differences were found between provenances with a trend to decreased height and dry weight with increasing altitude. This trend was associated with changes in certain characters. Leaf size and internode length decreased with rise in altitude of seed provenance while leaf thickness increased with altitude. Two conclusions are drawn with regard to field plantations o f E. urophylla in the tropics. The firsts is that seedling selection shoud be delayed until the age at least eight weeks in order to avoid the overriding influence of seed and cotyledon size the early growth of seedlings. The second is that low altitude populations are better adapted to grow in high temperature conditions, but high altitude populations are likely to be more successful in the cool conditions found at high altitudes.
650 $aseedlings
650 $aseeds
650 $aAltitude
650 $aEucalipto
650 $aPlântula
650 $aSemente
650 $aVariação Genética
653 $aEucalyptus erophylla
653 $aGenetic cariation
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Registro original: |
Embrapa Cerrados (CPAC) |
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| Registros recuperados : 272 | |
| 101. |  | GAMA, R. N. C. de S.; SANTOS, C. A. F.; DIAS, R. de C. S.; SOUZA, F. de F. Caracterização molecular e similaridade entre cultivares de melancia com base em marcadores SSR. In: CONGRESSO BRASILEIRO DE OLERICULTURA, 51., 2011, Viçosa, MG. Hortaliças: da origem aos desafios da saúde e sustentabilidade: anais... Viçosa, MG: ABH, 2011. p. 3077-3085.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Semiárido. |
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| 103. | | COELHO, B. E. S.; LIMA, M. dos S.; RYBKA, A. C. P.; SOUZA, F. de F.; FREITAS, S. T. de. Coloração da polpa de acerola obtida sob diferentes formas de processamento. In: CONGRESSO INTERNACIONAL INTERDISCIPLINAR EM EXTENSÃO RURAL E DESENVOLVIMENTO, 2., 2019, Juazeiro, BA. Territorialidades, mudanças climáticas, agroecossistemas e premissas para o desenvolvimento sustentável. Juazeiro, BA: UNIVASF, 2019.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Semiárido. |
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| 104. | | ROCHA, R. B.; TEIXEIRA, A. L.; RAMALHO, A. R.; ESPINDULA, M. C.; LUNZ, A. M. P.; SOUZA, F. de F. Coffea canephora breeding: estimated and achieved gains from selection in the Western Amazon, Brazil. Ciência Rural, Santa Maria, v. 51, n. 5, e20200713, 2021.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Acre; Embrapa Rondônia; Embrapa Semiárido. |
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| 105. | | SOUZA, F. de F; COSTA, E. F. de M.; DIAS, R. de C. de S.; QUEIRÓZ, M. A. de. Capacidade de combinação em linhagens e acessos de melancia. Horticultura Brasileira, Brasília, DF, v. 25, n. 1, Suplemento, ago. 2007. Resumo 486. Trabalho apresentado no 47. Congresso Brasileiro de Olericultura, 4. Simpósio Brasileiro sobre Cucurbitáceas, 2007. Porto Seguro.| Tipo: Resumo em Anais de Congresso | Circulação/Nível: -- - -- |
| Biblioteca(s): Embrapa Rondônia. |
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| 106. | | SOUZA, F. de F.; COSTA, E. F. de M.; DIAS, R. de C. S.; QUEIROZ, M. A. de. Capacidade de combinação em linhagens e acessos de melancia. Horticultura Brasileira, Brasília, DF, v. 25, n. 1, ago. 2007. 1 CD-ROM. Edição dos Anais do 47. Congresso Brasileiro de Olericultura; 4. Simpósio Brasileiro sobre Cucurbitáceas, Porto Seguro, ago. 2007.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Semiárido. |
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| 107. | | BRITO, E. T. S.; SOUZA, F. de F.; NASCIMENTO, T. L.; SANTOS, D. E. P. S.; SOUSA, I. I. Correlações entre caracteres morfo-agronômicos de genótipos de café canéfora avaliados no Semiárido. In: ENCONTRO DE GENÉTICA DO NORDESTE, 20.; SIMPÓSIO DE GENÉTICA HUMANA E MÉDICA DO NORDESTE, 2., 2014, Campina Grande. Ensino de genética e biologia molecular. Campina Grande: UFPB: Sociedade Brasileira de Genética, 2014.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Semiárido. |
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| 109. | | SOUZA, F. de F.; PEREIRA, A. A.; OLIVEIRA, A. C. B. de; DIOCLECIANO, J. M.; FERRO, G. de O. Avaliação preliminar de genótipos de café arábica em Rondônia. In: SIMPÓSIO DE PESQUISA DOS CAFÉS DO BRASIL, 6., 2009, Vitória. Inovação científica, competitividade e mudanças climáticas : anais. Vitória: Consórcio Pesquisa Café, 2009.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Rondônia. |
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| 110. | | SOUZA, F. de F.; PEREIRA, A. A.; OLIVEIRA, A. C. B. de; DIOCLECIANO, J. M.; FERRO, G. de O. Avaliação preliminar de genótipos de café arábica em Rondônia. In: SIMPÓSIO DE PESQUISA DOS CAFÉS DO BRASIL, 6., 2009, Vitória. Inovação científica, competitividade e mudanças climáticas : anais. Vitória: Consórcio Pesquisa Café, 2009.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Café. |
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| 112. | | FERRÃO, L. F. V.; SOUZA, F. de F.; CAIXETA, E. T.; ZAMBOLIM, E. M.; ZAMBOLIM, L.; SAKIYAMA, N. S. Estudo comparativo do nível de polimorfismo e informatividade acessado pelos marcadores RAPD, AFLP e SSR, no estabelecimento de relações genéticas em Coffea canephora. In: SIMPÓSIO DE PESQUISA DOS CAFÉS DO BRASIL, 7., 2011, Araxá. Anais... Brasília, DF: Embrapa Café, 2011.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Café. |
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| 117. | | MALEGORI, C.; MARQUESM E.; AVELAR, M. F. P.; FREITAS, S. T. de; SOUZA, F. de F.; PASQUINI, C.; CASIRAGHI, E. Comparison between FT-NIR and Micro-NIR in the evaluation of Acerola fruit quality, using PLS and SVM regression algorithms. In: INTERNATIONAL CONFERENCE ON NEAR INFRARED SPECTROSCOPY, 17., 2015, Foz do Iguassu. Book of abstracts. [S.l]: International Council for Near Infrared Spectroscopy, 2015.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Semiárido. |
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| 118. | | QUEIROZ, M. A. de; SOUZA, F. de F.; COSTA, N. D.; DIAS, R. de C. S.; ARAUJO, H. M. de. Desempenho de hibridos triploides experimentais de melancia no Vale do submedio Sao Francisco. Horticultura Brasileira, Brasília, DF, v. 19, n. 2, jul. 2001. Suplemento. Edição do 41 Congresso Brasileiro de Olericultura; 1 Encontro sobre Plantas Medicinais, Aromáticas e Condimentares, Brasília, DF, jul. 2001.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Semiárido. |
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| 120. | | SOUZA, F. de F.; COSTA, E. F. de M.; DIAS, R. de C. S.; QUEIROZ, M. A. de. Desempenho agronômico e divergência genética de genótipos de melancia. Horticultura Brasileira, Brasília, DF, v. 25, n. 1, ago. 2007. 1 CD-ROM. Edição dos Anais do 47. Congresso Brasileiro de Olericultura; 4. Simpósio Brasileiro sobre Cucurbitáceas, Porto Seguro, ago. 2007.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Semiárido. |
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| Registros recuperados : 272 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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