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 | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
01/08/1992 |
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Data da última atualização: |
09/06/2025 |
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Autoria: |
MOWLEM, A. |
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Título: |
Breeding goats for research. |
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Ano de publicação: |
1972 |
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Fonte/Imprenta: |
J. Inst. Anim. Tech. v. 23, n. 4, p. 125-135, 1972. |
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Idioma: |
Inglês |
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Conteúdo: |
The goat as an experimental animal can and is making valuable contributions to science. Compared with the laboratory dog they are cheaper, easier to maintain, larger, more hardy and are at leaste as pleasant and affectionate to work with. The supply of goats suitable for research is not good and therefore the establishment of a breeding herd is justified. There are true pigmy breeds of goat should smaller animals be required. At present such animals are not readily available and initial costs would be high. This paper shows that with good management and sensible husbandry healthy goats can be produced and a herd maintained. |
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Thesagro: |
Caprino; Cruzamento; Melhoramento. |
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Thesaurus Nal: |
Animal breeding; Crossbreds; Goats. |
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Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
LEADER 01116naa a2200193 a 4500
001 1521738
005 2025-06-09
008 1972 bl uuuu u00u1 u #d
100 1 $aMOWLEM, A.
245 $aBreeding goats for research.$h[electronic resource]
260 $c1972
520 $aThe goat as an experimental animal can and is making valuable contributions to science. Compared with the laboratory dog they are cheaper, easier to maintain, larger, more hardy and are at leaste as pleasant and affectionate to work with. The supply of goats suitable for research is not good and therefore the establishment of a breeding herd is justified. There are true pigmy breeds of goat should smaller animals be required. At present such animals are not readily available and initial costs would be high. This paper shows that with good management and sensible husbandry healthy goats can be produced and a herd maintained.
650 $aAnimal breeding
650 $aCrossbreds
650 $aGoats
650 $aCaprino
650 $aCruzamento
650 $aMelhoramento
773 $tJ. Inst. Anim. Tech.$gv. 23, n. 4, p. 125-135, 1972.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
16/11/2017 |
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Data da última atualização: |
16/11/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
GERHARDT, I. F. S.; AMARAL JÚNIOR, A. T.; GUIMARAES, L. J. M.; SCHWANTES, I. A.; SANTOS, A.; KAMPHORST, S. H.; LIMA, V. J.; POBLETE, F. M.; MYERS, G. O. |
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Afiliação: |
Universidade Estadual do Norte Fluminense Darcy Ribeiro; Universidade Estadual do Norte Fluminense Darcy Ribeiro; LAURO JOSE MOREIRA GUIMARAES, CNPMS; Universidade Estadual do Norte Fluminense Darcy Ribeiro; Universidade Estadual do Norte Fluminense Darcy Ribeiro; Universidade Estadual do Norte Fluminense Darcy Ribeiro; Universidade Estadual do Norte Fluminense Darcy Ribeiro; Universidad de Talca, Chile; Louisiana State University. |
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Título: |
Intraspecific variability of popcorn S7 lines for phosphorus efficiency in the soil. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Genetics and Molecular Research, Ribeirão Preto, v. 16, n. 3, p. 1-13, 2017. |
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DOI: |
10.4238/gmr16039763 |
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Idioma: |
Inglês |
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Conteúdo: |
The expansion of agriculture, coupled with the need for sustainable cropping, is one of the greatest challenges of the scientific community working on the generation of new cultivars adapted to abiotic stress conditions. The aim of this study was to evaluate the variability of popcorn lines as to responsiveness and efficiency in phosphorus use, as a first step towards the implementation of a breeding program interested in the practice of sustainable agriculture. Twenty-five popcorn lines were evaluated in two locations with different phosphorus levels in the soil, using a randomized block design. The following traits were measured: plant height, ear height, female flowering date, male flowering date, male-female flowering interval, ear diameter, ear length, 100-grain weight, grain yield, popping expansion, and expanded popcorn volume per hectare. A combined analysis of variance and test of means were performed, and the lines were classified as to their phosphorus use efficiency, according to their production performance in the different environments. The genetic diversity between the lines was estimated by Tocher?s and UPGMA clustering methods, using generalized Mahalanobis distance. Lines L59, P7, P2, P3, P4, P8, P10, P9, L66, L70, L69, and P5 were efficient and responsive, whereas lines L75, L80, L61, L77, L63, L65, P1, L54, L53, L88, and L71 were inefficient and nonresponsive. Genetic variability was greater in the environments with low phosphorus in the soil, suggesting that the selection pressure exerted in the stressing environment is a decisive factor to obtain a higher expression of variability. MenosThe expansion of agriculture, coupled with the need for sustainable cropping, is one of the greatest challenges of the scientific community working on the generation of new cultivars adapted to abiotic stress conditions. The aim of this study was to evaluate the variability of popcorn lines as to responsiveness and efficiency in phosphorus use, as a first step towards the implementation of a breeding program interested in the practice of sustainable agriculture. Twenty-five popcorn lines were evaluated in two locations with different phosphorus levels in the soil, using a randomized block design. The following traits were measured: plant height, ear height, female flowering date, male flowering date, male-female flowering interval, ear diameter, ear length, 100-grain weight, grain yield, popping expansion, and expanded popcorn volume per hectare. A combined analysis of variance and test of means were performed, and the lines were classified as to their phosphorus use efficiency, according to their production performance in the different environments. The genetic diversity between the lines was estimated by Tocher?s and UPGMA clustering methods, using generalized Mahalanobis distance. Lines L59, P7, P2, P3, P4, P8, P10, P9, L66, L70, L69, and P5 were efficient and responsive, whereas lines L75, L80, L61, L77, L63, L65, P1, L54, L53, L88, and L71 were inefficient and nonresponsive. Genetic variability was greater in the environments with low phosphorus in the soil, suggesting ... Mostrar Tudo |
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Palavras-Chave: |
Divergência genética; Estresse abiótico. |
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Thesagro: |
Agricultura sustentável; Fósforo; Milho pipoca; Variação genética; Zea mays. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://www.alice.cnptia.embrapa.br/alice/bitstream/doc/1079868/1/Intraspecificvariability.pdf
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Marc: |
LEADER 02570naa a2200313 a 4500
001 2079868
005 2017-11-16
008 2017 bl uuuu u00u1 u #d
024 7 $a10.4238/gmr16039763$2DOI
100 1 $aGERHARDT, I. F. S.
245 $aIntraspecific variability of popcorn S7 lines for phosphorus efficiency in the soil.$h[electronic resource]
260 $c2017
520 $aThe expansion of agriculture, coupled with the need for sustainable cropping, is one of the greatest challenges of the scientific community working on the generation of new cultivars adapted to abiotic stress conditions. The aim of this study was to evaluate the variability of popcorn lines as to responsiveness and efficiency in phosphorus use, as a first step towards the implementation of a breeding program interested in the practice of sustainable agriculture. Twenty-five popcorn lines were evaluated in two locations with different phosphorus levels in the soil, using a randomized block design. The following traits were measured: plant height, ear height, female flowering date, male flowering date, male-female flowering interval, ear diameter, ear length, 100-grain weight, grain yield, popping expansion, and expanded popcorn volume per hectare. A combined analysis of variance and test of means were performed, and the lines were classified as to their phosphorus use efficiency, according to their production performance in the different environments. The genetic diversity between the lines was estimated by Tocher?s and UPGMA clustering methods, using generalized Mahalanobis distance. Lines L59, P7, P2, P3, P4, P8, P10, P9, L66, L70, L69, and P5 were efficient and responsive, whereas lines L75, L80, L61, L77, L63, L65, P1, L54, L53, L88, and L71 were inefficient and nonresponsive. Genetic variability was greater in the environments with low phosphorus in the soil, suggesting that the selection pressure exerted in the stressing environment is a decisive factor to obtain a higher expression of variability.
650 $aAgricultura sustentável
650 $aFósforo
650 $aMilho pipoca
650 $aVariação genética
650 $aZea mays
653 $aDivergência genética
653 $aEstresse abiótico
700 1 $aAMARAL JÚNIOR, A. T.
700 1 $aGUIMARAES, L. J. M.
700 1 $aSCHWANTES, I. A.
700 1 $aSANTOS, A.
700 1 $aKAMPHORST, S. H.
700 1 $aLIMA, V. J.
700 1 $aPOBLETE, F. M.
700 1 $aMYERS, G. O.
773 $tGenetics and Molecular Research, Ribeirão Preto$gv. 16, n. 3, p. 1-13, 2017.
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