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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
15/10/2004 |
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Data da última atualização: |
15/10/2004 |
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Autoria: |
DIAS, P. F.; SOUTO, S. M.; PEREIRA, B. M.; LIZIEIRE, R. S.; ZANINE, A. de M.; SCHIMIDT, L. T.; FRANCO, A. A. |
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Título: |
Sobrevivência de estacas de gliricidia (Gliricidia sepium) como moirão vivo. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
Pasturas Tropicales, Cali, v. 26, n. 2, p. 55-62, 2004. |
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Idioma: |
Português |
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Notas: |
Stakes of Gliricidia sepium as supprt of fences. |
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Conteúdo: |
For 9 months, between 2001 and 2003, the use of stakes of Gliricidia sepium as supports of electric fences was evaluated in pastures of Cynodon nlemfuensis, grazed by 5-month-old calves, at the experimental field of Embrapa-Agrobiologia in Brazil. Stakes 1.5 and 2 m long were planted in the soil at a depth of 40 cm. The four treatments evaluated consisted of two plant heights and two types of electric fence insulators (commercial and polyurethane), with 14 replicates (monthly evaluation times). Stakes were placed at 10-m intervals, constituting the experimental units. Statistical analyses were performed using the SAEG v. 7.1 software, converting data corresponding to stake diameter and number of regrowths by arcsine. No differences were observed between treatments regarding number of regrowths/plant or plant diameter. Pastures were submitted to browsing and regrowth survival was above 78%.
Durante nove meses, entre 1991 e 1993, no campo experimental da EMBRAPA Agrobiologia, Brasil, foi avaliado o uso de estacas de Gliricídia sepium como suporte para cerca elétrica, em pastagens de cynodon nhemfuensis, utilizadas por bezerros, com cinco meses de idade. Foram plantadas estacas de 1,5 e 2 metros de comprimento, a uma profundidade de 40 cm. Os quatro tratamentos experimentais consistiram de 2 alturas de plantas e dois tipos de isoladores elétricos (comercial e poliuretano), com 14 repetições e avaliações mensais. As estacas foram plantadas a intervalos de 10 m e consistiram a unidade experimental. As análises estatísticas foram realizadas pelo SAEG v. 7.1, mediante a conversão, por arcoseno, dos dados referente ao diâmetro das estacas e número de rebrotas. Não foram observadas diferenças entre tratamentos para o n´mero de rebrotas/plantas e para o diâmetro das plantas. Os animais pastorearam as folhas e a sobrevivência dos brotos foi maior que 78%. MenosFor 9 months, between 2001 and 2003, the use of stakes of Gliricidia sepium as supports of electric fences was evaluated in pastures of Cynodon nlemfuensis, grazed by 5-month-old calves, at the experimental field of Embrapa-Agrobiologia in Brazil. Stakes 1.5 and 2 m long were planted in the soil at a depth of 40 cm. The four treatments evaluated consisted of two plant heights and two types of electric fence insulators (commercial and polyurethane), with 14 replicates (monthly evaluation times). Stakes were placed at 10-m intervals, constituting the experimental units. Statistical analyses were performed using the SAEG v. 7.1 software, converting data corresponding to stake diameter and number of regrowths by arcsine. No differences were observed between treatments regarding number of regrowths/plant or plant diameter. Pastures were submitted to browsing and regrowth survival was above 78%.
Durante nove meses, entre 1991 e 1993, no campo experimental da EMBRAPA Agrobiologia, Brasil, foi avaliado o uso de estacas de Gliricídia sepium como suporte para cerca elétrica, em pastagens de cynodon nhemfuensis, utilizadas por bezerros, com cinco meses de idade. Foram plantadas estacas de 1,5 e 2 metros de comprimento, a uma profundidade de 40 cm. Os quatro tratamentos experimentais consistiram de 2 alturas de plantas e dois tipos de isoladores elétricos (comercial e poliuretano), com 14 repetições e avaliações mensais. As estacas foram plantadas a intervalos de 10 m e consistiram a ... Mostrar Tudo |
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Palavras-Chave: |
Survival. |
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Thesagro: |
Adubo Verde; Estaca; Gliricidia; Sobrevivência. |
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Thesaurus Nal: |
Gliricidia sepium; green manures. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02700naa a2200289 a 4500
001 1626551
005 2004-10-15
008 2004 bl --- 0-- u #d
100 1 $aDIAS, P. F.
245 $aSobrevivência de estacas de gliricidia (Gliricidia sepium) como moirão vivo.
260 $c2004
500 $aStakes of Gliricidia sepium as supprt of fences.
520 $aFor 9 months, between 2001 and 2003, the use of stakes of Gliricidia sepium as supports of electric fences was evaluated in pastures of Cynodon nlemfuensis, grazed by 5-month-old calves, at the experimental field of Embrapa-Agrobiologia in Brazil. Stakes 1.5 and 2 m long were planted in the soil at a depth of 40 cm. The four treatments evaluated consisted of two plant heights and two types of electric fence insulators (commercial and polyurethane), with 14 replicates (monthly evaluation times). Stakes were placed at 10-m intervals, constituting the experimental units. Statistical analyses were performed using the SAEG v. 7.1 software, converting data corresponding to stake diameter and number of regrowths by arcsine. No differences were observed between treatments regarding number of regrowths/plant or plant diameter. Pastures were submitted to browsing and regrowth survival was above 78%. Durante nove meses, entre 1991 e 1993, no campo experimental da EMBRAPA Agrobiologia, Brasil, foi avaliado o uso de estacas de Gliricídia sepium como suporte para cerca elétrica, em pastagens de cynodon nhemfuensis, utilizadas por bezerros, com cinco meses de idade. Foram plantadas estacas de 1,5 e 2 metros de comprimento, a uma profundidade de 40 cm. Os quatro tratamentos experimentais consistiram de 2 alturas de plantas e dois tipos de isoladores elétricos (comercial e poliuretano), com 14 repetições e avaliações mensais. As estacas foram plantadas a intervalos de 10 m e consistiram a unidade experimental. As análises estatísticas foram realizadas pelo SAEG v. 7.1, mediante a conversão, por arcoseno, dos dados referente ao diâmetro das estacas e número de rebrotas. Não foram observadas diferenças entre tratamentos para o n´mero de rebrotas/plantas e para o diâmetro das plantas. Os animais pastorearam as folhas e a sobrevivência dos brotos foi maior que 78%.
650 $aGliricidia sepium
650 $agreen manures
650 $aAdubo Verde
650 $aEstaca
650 $aGliricidia
650 $aSobrevivência
653 $aSurvival
700 1 $aSOUTO, S. M.
700 1 $aPEREIRA, B. M.
700 1 $aLIZIEIRE, R. S.
700 1 $aZANINE, A. de M.
700 1 $aSCHIMIDT, L. T.
700 1 $aFRANCO, A. A.
773 $tPasturas Tropicales, Cali$gv. 26, n. 2, p. 55-62, 2004.
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Registro original: |
Embrapa Agrobiologia (CNPAB) |
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Biblioteca |
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Origem |
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Cutter |
Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
18/07/2022 |
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Data da última atualização: |
20/04/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
SILVA, C. M. de J.; DIAS, R. de C. S.; SANTOS, J. S. dos; SOUZA, F. de F.; MELO, N. F. de. |
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Afiliação: |
CARLA MARIA DE JESUS SILVA, Universidade Estadual de Feira de Santana, Feira de Santana, BA; RITA DE CASSIA SOUZA DIAS, CPATSA; JOICE SIMONE DOS SANTOS, Instituto Federal do Sertão Pernambucano, Campus Ouricuri, PE; FLAVIO DE FRANCA SOUZA, CPATSA; NATONIEL FRANKLIN DE MELO, CPATSA. |
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Título: |
Induction of polyploidy in watermelon genotype with powdery mildew resistance (Podosphaera xanthii). |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Revista Caatinga, v. 35, n. 3, p. 505-513, 2022. |
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DOI: |
http://dx.doi.org/10.1590/1983-21252022v35n301rc |
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Idioma: |
Inglês |
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Conteúdo: |
Triploid watermelon is highly appreciated by the most demanding markets, and due to its small size, it is ideal for consumption by small families. With the growth in areas cultivated with seedless watermelon worldwide, there is a demand for the development of tetraploid germplasm to obtain triploid hybrids with better agronomic performance. This study performed two tests to induce polyploidy in the powdery mildew?resistant line developed by Embrapa Semi-Arid, LDRO, under different colchicine concentrations and application methods. In Experiment 1, the seeds were treated with colchicine (0.0%, 0.1%, and 0.2%) for 24 h and 48 h. In Experiment 2, 0.2% colchicine was applied by different methods: (a) directly on the seed (MDS) with and without scarification, (b) on seeds with radicle emission (MER), (c) at the insertion point between the hypocotyl and the root (MIHR), (d) at the seedling apex (MAP), and (e) in the inverted hypocotyl (MHI). Chromosome count (cytogenetic analysis), number of chloroplasts per pair of guard cells, number of stomata, seedling height, and hypocotyl diameter were measured. In the LDRO line, chromosomal duplication occurred in some plant cells, but it was not possible to obtain 100% tetraploid plants. Colchicine (0.2%) for 48 h without mechanical scarification induced chromosomal duplication in watermelon. The analysis of the number of chloroplasts identified the level of ploidy early, reducing the number of plants needed to be evaluated by cytogenetics, which allowed us to more accurately identify the different levels of ploidy of the plant. MenosTriploid watermelon is highly appreciated by the most demanding markets, and due to its small size, it is ideal for consumption by small families. With the growth in areas cultivated with seedless watermelon worldwide, there is a demand for the development of tetraploid germplasm to obtain triploid hybrids with better agronomic performance. This study performed two tests to induce polyploidy in the powdery mildew?resistant line developed by Embrapa Semi-Arid, LDRO, under different colchicine concentrations and application methods. In Experiment 1, the seeds were treated with colchicine (0.0%, 0.1%, and 0.2%) for 24 h and 48 h. In Experiment 2, 0.2% colchicine was applied by different methods: (a) directly on the seed (MDS) with and without scarification, (b) on seeds with radicle emission (MER), (c) at the insertion point between the hypocotyl and the root (MIHR), (d) at the seedling apex (MAP), and (e) in the inverted hypocotyl (MHI). Chromosome count (cytogenetic analysis), number of chloroplasts per pair of guard cells, number of stomata, seedling height, and hypocotyl diameter were measured. In the LDRO line, chromosomal duplication occurred in some plant cells, but it was not possible to obtain 100% tetraploid plants. Colchicine (0.2%) for 48 h without mechanical scarification induced chromosomal duplication in watermelon. The analysis of the number of chloroplasts identified the level of ploidy early, reducing the number of plants needed to be evaluated by cytogenetics... Mostrar Tudo |
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Palavras-Chave: |
Duplicação cromossômica; Melancia triploide; Podosphaera xanthii; Tetraploidia. |
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Thesagro: |
Citogenética; Citogenética Vegetal; Citrullus Lanatus; Doença; Melancia; Oídio. |
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Thesaurus NAL: |
Cytogenetics; Tetraploidy; Watermelons. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1144783/1/INDUCTION-OF-POLYPLOIDY-IN-WATERMELON-2022.pdf
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Marc: |
LEADER 02593naa a2200337 a 4500
001 2144783
005 2023-04-20
008 2022 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1590/1983-21252022v35n301rc$2DOI
100 1 $aSILVA, C. M. de J.
245 $aInduction of polyploidy in watermelon genotype with powdery mildew resistance (Podosphaera xanthii).$h[electronic resource]
260 $c2022
520 $aTriploid watermelon is highly appreciated by the most demanding markets, and due to its small size, it is ideal for consumption by small families. With the growth in areas cultivated with seedless watermelon worldwide, there is a demand for the development of tetraploid germplasm to obtain triploid hybrids with better agronomic performance. This study performed two tests to induce polyploidy in the powdery mildew?resistant line developed by Embrapa Semi-Arid, LDRO, under different colchicine concentrations and application methods. In Experiment 1, the seeds were treated with colchicine (0.0%, 0.1%, and 0.2%) for 24 h and 48 h. In Experiment 2, 0.2% colchicine was applied by different methods: (a) directly on the seed (MDS) with and without scarification, (b) on seeds with radicle emission (MER), (c) at the insertion point between the hypocotyl and the root (MIHR), (d) at the seedling apex (MAP), and (e) in the inverted hypocotyl (MHI). Chromosome count (cytogenetic analysis), number of chloroplasts per pair of guard cells, number of stomata, seedling height, and hypocotyl diameter were measured. In the LDRO line, chromosomal duplication occurred in some plant cells, but it was not possible to obtain 100% tetraploid plants. Colchicine (0.2%) for 48 h without mechanical scarification induced chromosomal duplication in watermelon. The analysis of the number of chloroplasts identified the level of ploidy early, reducing the number of plants needed to be evaluated by cytogenetics, which allowed us to more accurately identify the different levels of ploidy of the plant.
650 $aCytogenetics
650 $aTetraploidy
650 $aWatermelons
650 $aCitogenética
650 $aCitogenética Vegetal
650 $aCitrullus Lanatus
650 $aDoença
650 $aMelancia
650 $aOídio
653 $aDuplicação cromossômica
653 $aMelancia triploide
653 $aPodosphaera xanthii
653 $aTetraploidia
700 1 $aDIAS, R. de C. S.
700 1 $aSANTOS, J. S. dos
700 1 $aSOUZA, F. de F.
700 1 $aMELO, N. F. de
773 $tRevista Caatinga$gv. 35, n. 3, p. 505-513, 2022.
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