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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
25/09/1998 |
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Data da última atualização: |
25/09/1998 |
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Autoria: |
FONSECA, C. L. |
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Título: |
Breeding for neutral detergent-soluble fiber and associations among forage quality traits, vigor, and disease resistance in alfafa. |
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Ano de publicação: |
1998 |
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Fonte/Imprenta: |
[Ithaca]: Cornell University, 1998. |
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Páginas: |
123p. |
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Idioma: |
Inglês |
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Notas: |
PhD Dissertation. |
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Conteúdo: |
Little is known about breeding for neutral detergent-soluble fiber (NDSF) and about the genetic relationship among diseases, quality traits, and vigor in alfalfa (Medicago sativa L.). We conducted a study to determine the potencial use of near infrared reflectance spectroscopy (NIRS) to predict NDSF concentration, mostly pectin in alfalfa, and to estimate heritability and expected gains from selection for NDSF concentration. Data were collected from herbage harvested three times in 1996 and twice in 1997 from two alfalfa half-sib (HS) progeny tests. Initially, a comparison between 90 and 80% ethanol extractions was made for NIRS calibration using samples from the second harves, 1996. Both 90 and 80% ethanol extraction was used to assay all of the remaining samples. The calibration equation standard errors for predicting NDSF from individual harvest were small, ranging from 4.71 to 7.54 g kg 1-. Squared coefficients of multiple determination (R) ranged from 0.72 to 0.97. Near infrared reflectance spectroscopy (NIRS) can be a useful tool quickly evaluate NDSF concentration from a large number of forage samples. Selection of parent genotypes with high NDSF concentrations based on HS family evaluation and NIRS equations may be effective. In a separate study, the same populations were evaluated for resistance to five diseases, nutritional quality, and vigor. Simple, phenotypic, and additive genetic correlation coefficients were estimated for all possible combinations of traits from independent experiments for each dissease and quality trait. Selection for bacterial wilt resistance in some populations may have a positive impact on Fusarium wilt resistance. Selection for higher NDSF concentrations may decrease the concentrations of the other cell-wall fiber components and increase true in vitro dry matter digestibility. Selections for lower fiber and/or higher crude protein concentrations may decrese vigor. Significant correlations between quality traits, disease resistances, and vigor were not of sufficient magnitude to adversely affect the improvement of these traits. Direct selection for all traits, except for phytophthora root rot, based on HS progeny tests, may be effective for both populations. MenosLittle is known about breeding for neutral detergent-soluble fiber (NDSF) and about the genetic relationship among diseases, quality traits, and vigor in alfalfa (Medicago sativa L.). We conducted a study to determine the potencial use of near infrared reflectance spectroscopy (NIRS) to predict NDSF concentration, mostly pectin in alfalfa, and to estimate heritability and expected gains from selection for NDSF concentration. Data were collected from herbage harvested three times in 1996 and twice in 1997 from two alfalfa half-sib (HS) progeny tests. Initially, a comparison between 90 and 80% ethanol extractions was made for NIRS calibration using samples from the second harves, 1996. Both 90 and 80% ethanol extraction was used to assay all of the remaining samples. The calibration equation standard errors for predicting NDSF from individual harvest were small, ranging from 4.71 to 7.54 g kg 1-. Squared coefficients of multiple determination (R) ranged from 0.72 to 0.97. Near infrared reflectance spectroscopy (NIRS) can be a useful tool quickly evaluate NDSF concentration from a large number of forage samples. Selection of parent genotypes with high NDSF concentrations based on HS family evaluation and NIRS equations may be effective. In a separate study, the same populations were evaluated for resistance to five diseases, nutritional quality, and vigor. Simple, phenotypic, and additive genetic correlation coefficients were estimated for all possible combinations of traits fr... Mostrar Tudo |
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Palavras-Chave: |
Anthracnosis; Bacterioses; Correlacao genetica; Espectrofotometro infra-vermelho; Fibres; Fungal diseases; Herdabilidade; Infrared spectrophotometry; Lignins; Murcha de verticilium; NIRS; Phenotypes; Phytophtora; Surface active agents. |
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Thesagro: |
Alfafa; Antracnose; Detergente; Fenótipo; Fibra; Fungo; Fusarium; Lignina; Medicago Sativa; Melhoramento Genético Vegetal; Murcha Bacteriana; Murcha de Fusarium; Pectina; Podridão da Raiz; Solubilidade; Verticillium. |
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Thesaurus Nal: |
fungi; genetic correlation; heritability; pectins; plant breeding; solubility. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03732nam a2200565 a 4500
001 1562965
005 1998-09-25
008 1998 bl uuuu m 00u1 u #d
100 1 $aFONSECA, C. L.
245 $aBreeding for neutral detergent-soluble fiber and associations among forage quality traits, vigor, and disease resistance in alfafa.
260 $a[Ithaca]: Cornell University$c1998
300 $a123p.
500 $aPhD Dissertation.
520 $aLittle is known about breeding for neutral detergent-soluble fiber (NDSF) and about the genetic relationship among diseases, quality traits, and vigor in alfalfa (Medicago sativa L.). We conducted a study to determine the potencial use of near infrared reflectance spectroscopy (NIRS) to predict NDSF concentration, mostly pectin in alfalfa, and to estimate heritability and expected gains from selection for NDSF concentration. Data were collected from herbage harvested three times in 1996 and twice in 1997 from two alfalfa half-sib (HS) progeny tests. Initially, a comparison between 90 and 80% ethanol extractions was made for NIRS calibration using samples from the second harves, 1996. Both 90 and 80% ethanol extraction was used to assay all of the remaining samples. The calibration equation standard errors for predicting NDSF from individual harvest were small, ranging from 4.71 to 7.54 g kg 1-. Squared coefficients of multiple determination (R) ranged from 0.72 to 0.97. Near infrared reflectance spectroscopy (NIRS) can be a useful tool quickly evaluate NDSF concentration from a large number of forage samples. Selection of parent genotypes with high NDSF concentrations based on HS family evaluation and NIRS equations may be effective. In a separate study, the same populations were evaluated for resistance to five diseases, nutritional quality, and vigor. Simple, phenotypic, and additive genetic correlation coefficients were estimated for all possible combinations of traits from independent experiments for each dissease and quality trait. Selection for bacterial wilt resistance in some populations may have a positive impact on Fusarium wilt resistance. Selection for higher NDSF concentrations may decrease the concentrations of the other cell-wall fiber components and increase true in vitro dry matter digestibility. Selections for lower fiber and/or higher crude protein concentrations may decrese vigor. Significant correlations between quality traits, disease resistances, and vigor were not of sufficient magnitude to adversely affect the improvement of these traits. Direct selection for all traits, except for phytophthora root rot, based on HS progeny tests, may be effective for both populations.
650 $afungi
650 $agenetic correlation
650 $aheritability
650 $apectins
650 $aplant breeding
650 $asolubility
650 $aAlfafa
650 $aAntracnose
650 $aDetergente
650 $aFenótipo
650 $aFibra
650 $aFungo
650 $aFusarium
650 $aLignina
650 $aMedicago Sativa
650 $aMelhoramento Genético Vegetal
650 $aMurcha Bacteriana
650 $aMurcha de Fusarium
650 $aPectina
650 $aPodridão da Raiz
650 $aSolubilidade
650 $aVerticillium
653 $aAnthracnosis
653 $aBacterioses
653 $aCorrelacao genetica
653 $aEspectrofotometro infra-vermelho
653 $aFibres
653 $aFungal diseases
653 $aHerdabilidade
653 $aInfrared spectrophotometry
653 $aLignins
653 $aMurcha de verticilium
653 $aNIRS
653 $aPhenotypes
653 $aPhytophtora
653 $aSurface active agents
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Embrapa Cerrados (CPAC) |
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| 2. |  | CORRÊA, C. L. O.; LUNA, A. S.; PENHA, E. das M.; GOTTSCHALK, L. M. F. Determinação de acrilamida por espectrofluorêscencia em amostras de café. In: CONGRESSO BRASILEIRO DE PESQUISA S CAFEEIRAS, 44., 2018, Franca, SP. O Nosso café, melhorados desde o pé: Trabalhos apresentados. Varginha: Fundação Procafé, 2018. p. 182-183 23 a 26 out. 2018. Seção 4.5. Colheita, preparo, qualidade do café, consumo e saúde.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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| 5. | | CORRÊA, C. L. O.; PENHA, E. das M.; ANJOS, M. R. dos; PACHECO, S.; FREITAS-SILVA, O.; LUNA, A. S.; GOTTSCHALK, L. M. F. Use of asparaginase for acrylamide mitigation in coffee and its influence on the content of caffeine, chlorogenic acid, and caffeic acid. Food Chemistry, v. 338, 128045, 6 p., fev. 2021.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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| Registros recuperados : 5 | |
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