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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão; Embrapa Clima Temperado; Embrapa Soja. |
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Data corrente: |
14/12/1995 |
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Data da última atualização: |
17/01/2006 |
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Autoria: |
NOLDIN, J. A. |
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Título: |
Characterization, seed longevity, and herbicide sensitivity of red rice (Oryza sativa L.) ecotypes, and red rice control in soybeans (Glycine max (L.) Merr.). |
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Ano de publicação: |
1995 |
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Fonte/Imprenta: |
[S.l.]: Texas A&M University, 1995. |
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Páginas: |
218 p. |
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Idioma: |
Inglês |
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Notas: |
Tese Doutorado. |
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Conteúdo: |
Red rice samples were obtained in 1992 from Arkansas, Louisiana, Mississippi, and Texas. Nineteen ecotypes including eleven strawhull, five blackhull, two goldhull, and one brownhull were hand-transplanted in the field for phenological studies in comparison to rice cultivars 'Lemont', 'Mars', and 'Maybelle'. Forty-two different plant and seed traits were evaluated. Most ecotypes were uniform and stable, but with considerable amount of genetic variability among ecotypes. Averaged, ecotypes flowered three to five days later than rice, but 12 reached 50 % anthesis at the same time or earlier than 'Lemont'. Most ecotypes had high and early seed shattering and strong dormancy. Some ecotypes had plant characters closely related to rice cultivars, such as erect and glabrous leaves, resistance to shattering, and long, glabrous grains. Seed longevity of non-dormant red rice ecotypes were evaluated in the soil at two locations. Flooding during the rice growing season did no affect longevity of non-dormant red rice. Five months after burial, only three ecotypes had viable seeds (< 1 %) at 5 cm, but nine ecotypes had viable seeds at 25 cm deep after two years. Ecotypes with higher viability were blackhull AR 2,12 %, brownhull MS 4,9 %, and goldhull TX 1,8 %. Freshly harvested and dormant red rice seed buried at 12 cm had longer longevity than seed placed on the soil surface, suggesting that environmental fluctuations were favorable for seed germination and viability losses. After two winters in the field, the maximum viability was 2% for blackhull TX 4. Red rice seed longevity evaluated using the accelerated aging technique did not correlate to the field results. There was no association between seed dormancy and longevity under laboratory conditions. Greenhouse studies showed large variability in herbicide sensitivity among ecotypes. None of the 19 ecotypes were adequately controlled by all herbicide treatments applied at the recommended rate: Ecotype TX 4 showed tolerance to glufosinate at the normal use rate, while the 2X rate provided more than 90% control. Field experiments showed that rice rotation to soybeans can be an effective system to control red rice. Soybeans treated with metolachlor alone or in mixture with imazaquin applied PPI consistently resulted in very good rice control and the best soybean yields. MenosRed rice samples were obtained in 1992 from Arkansas, Louisiana, Mississippi, and Texas. Nineteen ecotypes including eleven strawhull, five blackhull, two goldhull, and one brownhull were hand-transplanted in the field for phenological studies in comparison to rice cultivars 'Lemont', 'Mars', and 'Maybelle'. Forty-two different plant and seed traits were evaluated. Most ecotypes were uniform and stable, but with considerable amount of genetic variability among ecotypes. Averaged, ecotypes flowered three to five days later than rice, but 12 reached 50 % anthesis at the same time or earlier than 'Lemont'. Most ecotypes had high and early seed shattering and strong dormancy. Some ecotypes had plant characters closely related to rice cultivars, such as erect and glabrous leaves, resistance to shattering, and long, glabrous grains. Seed longevity of non-dormant red rice ecotypes were evaluated in the soil at two locations. Flooding during the rice growing season did no affect longevity of non-dormant red rice. Five months after burial, only three ecotypes had viable seeds (< 1 %) at 5 cm, but nine ecotypes had viable seeds at 25 cm deep after two years. Ecotypes with higher viability were blackhull AR 2,12 %, brownhull MS 4,9 %, and goldhull TX 1,8 %. Freshly harvested and dormant red rice seed buried at 12 cm had longer longevity than seed placed on the soil surface, suggesting that environmental fluctuations were favorable for seed germination and viability losses. After two wi... Mostrar Tudo |
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Palavras-Chave: |
) Merr; Control; Controle; Ecotipo; EUA; Glycine max (L; Herbicide; Oryza sativa L; Planta daninha; Red; Red rice ecotypes; Rotacao; Sensibilidade; Soybean; USA; Vermelho. |
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Thesagro: |
Arroz; Arroz Vermelho; Glycine Max; Herbicida; Longevidade; Oryza Sativa; Semente; Soja. |
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Thesaurus Nal: |
crop rotation; rice; Texas; weeds. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03515nam a2200469 a 4500
001 1204897
005 2006-01-17
008 1995 bl uuuu m 00u1 u #d
100 1 $aNOLDIN, J. A.
245 $aCharacterization, seed longevity, and herbicide sensitivity of red rice (Oryza sativa L.) ecotypes, and red rice control in soybeans (Glycine max (L.) Merr.).
260 $a[S.l.]: Texas A&M University$c1995
300 $a218 p.
500 $aTese Doutorado.
520 $aRed rice samples were obtained in 1992 from Arkansas, Louisiana, Mississippi, and Texas. Nineteen ecotypes including eleven strawhull, five blackhull, two goldhull, and one brownhull were hand-transplanted in the field for phenological studies in comparison to rice cultivars 'Lemont', 'Mars', and 'Maybelle'. Forty-two different plant and seed traits were evaluated. Most ecotypes were uniform and stable, but with considerable amount of genetic variability among ecotypes. Averaged, ecotypes flowered three to five days later than rice, but 12 reached 50 % anthesis at the same time or earlier than 'Lemont'. Most ecotypes had high and early seed shattering and strong dormancy. Some ecotypes had plant characters closely related to rice cultivars, such as erect and glabrous leaves, resistance to shattering, and long, glabrous grains. Seed longevity of non-dormant red rice ecotypes were evaluated in the soil at two locations. Flooding during the rice growing season did no affect longevity of non-dormant red rice. Five months after burial, only three ecotypes had viable seeds (< 1 %) at 5 cm, but nine ecotypes had viable seeds at 25 cm deep after two years. Ecotypes with higher viability were blackhull AR 2,12 %, brownhull MS 4,9 %, and goldhull TX 1,8 %. Freshly harvested and dormant red rice seed buried at 12 cm had longer longevity than seed placed on the soil surface, suggesting that environmental fluctuations were favorable for seed germination and viability losses. After two winters in the field, the maximum viability was 2% for blackhull TX 4. Red rice seed longevity evaluated using the accelerated aging technique did not correlate to the field results. There was no association between seed dormancy and longevity under laboratory conditions. Greenhouse studies showed large variability in herbicide sensitivity among ecotypes. None of the 19 ecotypes were adequately controlled by all herbicide treatments applied at the recommended rate: Ecotype TX 4 showed tolerance to glufosinate at the normal use rate, while the 2X rate provided more than 90% control. Field experiments showed that rice rotation to soybeans can be an effective system to control red rice. Soybeans treated with metolachlor alone or in mixture with imazaquin applied PPI consistently resulted in very good rice control and the best soybean yields.
650 $acrop rotation
650 $arice
650 $aTexas
650 $aweeds
650 $aArroz
650 $aArroz Vermelho
650 $aGlycine Max
650 $aHerbicida
650 $aLongevidade
650 $aOryza Sativa
650 $aSemente
650 $aSoja
653 $a) Merr
653 $aControl
653 $aControle
653 $aEcotipo
653 $aEUA
653 $aGlycine max (L
653 $aHerbicide
653 $aOryza sativa L
653 $aPlanta daninha
653 $aRed
653 $aRed rice ecotypes
653 $aRotacao
653 $aSensibilidade
653 $aSoybean
653 $aUSA
653 $aVermelho
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
18/12/2009 |
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Data da última atualização: |
08/06/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Internacional - A |
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Autoria: |
ARRUDA, M. S. P.; ARAUJO, M. Q. de; LOBO, L. T.; SOUZA FILHO, A. P. de; ALVES, S. de M.; SANTOS, L. da S.; MULLER, A. H.; ARRUDA, A. C.; GUILHON, G. M. S. P. |
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Afiliação: |
MARA S. P. ARRUDA, UFPA; MAURÍCIO Q. DE ARAÚJO; LÍVIA T. LÔBO; ANTONIO PEDRO DA SILVA SOUZA FILHO, CPATU; SERGIO DE MELLO ALVES, CPATU; LOURIVALDO DA S. SANTOS; ADOLFO H. MÜLLER; ALBERTO C. ARRUDA; GISELLE M. S. P. GUILHON. |
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Título: |
Potential allelochemicals isolated from Pueraria phaseoloides. |
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Ano de publicação: |
2005 |
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Fonte/Imprenta: |
Allelopathy Journal, v. 15, n. 2, p. 211-220, 2005. |
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Idioma: |
Inglês |
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Conteúdo: |
Two pyranoisotlavones, alpinumisoflavone and 4' -rnethyl-alpinumisoflavone and methyl 2-([3-D-glucopyranosyloxy) benzoatc were isolated trom the aerial parts of Pueraria phaseoloides. Phytotoxic effects of these compounds and of the P. phaseoloides hydroalcoholic extract fractions obtained by liquid-liquid partition were examined in Petri dish bioassay. The dichloromethanic and ethyl acetate tractions had a significant effect 011 seed germination of the weed species Mimosa pudim, showing 100 and 76 % inhibition, respectively. However, the three isolated compounds had a greater effect on radicle elongation of the weed species Mimosa pudim. Senna obtusifolia, Senna occidentalis and Urena lobata. 4'-Methylalpinumisoflavone at the highest dose tested (3.0 ppm) exhibited stronger inhibition (77 %) on S. obtusifolia, whereas, alpinumisotlavone at 3.0 ppm was more active (60% inhibition) on U. lobata and methyl 2-([3-D-glucopyranosyloxy) benzo ate at 4.0 ppm (the highest dose tested) showed significam inhibition (44 %) on M. pudim. Our experimental data showed that three natural products tested have selective herbicidal activity against weed species. |
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Thesagro: |
Leguminosae. |
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Thesaurus NAL: |
allelochemicals; allelopathy. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 01873naa a2200253 a 4500
001 1578366
005 2022-06-08
008 2005 bl uuuu u00u1 u #d
100 1 $aARRUDA, M. S. P.
245 $aPotential allelochemicals isolated from Pueraria phaseoloides.$h[electronic resource]
260 $c2005
520 $aTwo pyranoisotlavones, alpinumisoflavone and 4' -rnethyl-alpinumisoflavone and methyl 2-([3-D-glucopyranosyloxy) benzoatc were isolated trom the aerial parts of Pueraria phaseoloides. Phytotoxic effects of these compounds and of the P. phaseoloides hydroalcoholic extract fractions obtained by liquid-liquid partition were examined in Petri dish bioassay. The dichloromethanic and ethyl acetate tractions had a significant effect 011 seed germination of the weed species Mimosa pudim, showing 100 and 76 % inhibition, respectively. However, the three isolated compounds had a greater effect on radicle elongation of the weed species Mimosa pudim. Senna obtusifolia, Senna occidentalis and Urena lobata. 4'-Methylalpinumisoflavone at the highest dose tested (3.0 ppm) exhibited stronger inhibition (77 %) on S. obtusifolia, whereas, alpinumisotlavone at 3.0 ppm was more active (60% inhibition) on U. lobata and methyl 2-([3-D-glucopyranosyloxy) benzo ate at 4.0 ppm (the highest dose tested) showed significam inhibition (44 %) on M. pudim. Our experimental data showed that three natural products tested have selective herbicidal activity against weed species.
650 $aallelochemicals
650 $aallelopathy
650 $aLeguminosae
700 1 $aARAUJO, M. Q. de
700 1 $aLOBO, L. T.
700 1 $aSOUZA FILHO, A. P. de
700 1 $aALVES, S. de M.
700 1 $aSANTOS, L. da S.
700 1 $aMULLER, A. H.
700 1 $aARRUDA, A. C.
700 1 $aGUILHON, G. M. S. P.
773 $tAllelopathy Journal$gv. 15, n. 2, p. 211-220, 2005.
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