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| 2. |  | COIMBRA, J. L. M.; CARVALHO, F. I. F.; COIMBRA, S. M.; LORENCETTI, C.; CHOCOROSQUI, V. R. Doses de raios gama na cultura da aveia: estatura de planta. Revista Brasileira de Agrociencia, Pelotas, v. 11, n. 3, p. 303-308, jul./set. 2005.| Biblioteca(s): Epagri-Sede. |
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| 3. | | COIMBRA, J. L. M.; GUIDOLIN, A. F.; CARVALHO, F. I. F. de; COIMBRA, S. M. M.; HEMP, S. Reflexos da interacao genotipo x ambiente e suas implicacoes nos ganhos de selecao em genotipos de feijao (Phaseolus vulgaris L.). Ciencia Rural, Santa Maria, v. 29, n. 3, p. 433-439, jul-set. 1999.| Biblioteca(s): Epagri-Sede. |
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Registro Completo
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
09/08/2019 |
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Data da última atualização: |
09/08/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Nacional - B |
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Autoria: |
SOUZA, M.; COMIN, J. J.; KURTZ, C.; LOVATO, P. E.; LIMA, A. P.; KUHNEN, S. |
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Título: |
PHENOLIC COMPOUNDS WITH ALLELOPATHIC POTENTIAL OF Secale cereale AND Raphanus sativus GROWN UNDER AN AGROECOLOGICAL NO-TILLAGE SYSTEM. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Planta Daninha, Londrina, PR, v. 37, 1-12, 2019. |
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Idioma: |
Inglês |
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Conteúdo: |
The identification of compounds with allelopathic potential produced
by cover crops can assist in selecting species for weed management purposes in
no-tillage systems. This study aimed to identify the main phenolic compounds with
allelopathic potential in the shoot of rye (Secale cereale L.) and radish (Raphanus
sativus L.) cover crops, as well as evaluate whether the cultivation system and
phenological stage may influence secondary metabolite production and weed
emergence. Samples of the shoot of these cover crops were collected at 60, 80, and
100 days after sowing (DAS) and 15 and 30 days after lodging (DAL) under field
conditions. Weed emergence was evaluated at 45, 75, and 100 DAL of cover crops.
The main compounds in rye were 6-methoxy-2-benzoxazolinone (MBOA) and
2-benzoxazolinone (BOA) under monocropping and intercropping, while flavonoid
quercetin was found in radish at all evaluated times. During the growing cycle, the
highest contents of phenolic compounds were found at the elongation stage
(60 DAS) of rye under monocropping and intercropping systems (9.33 and 8.22 mg g-1
DM, respectively) and at grain filling stage (100 DAS) for radish intercropped with
rye and black oat (3.24 and 3.83 mg g-1 DM, respectively). No differences were found
in the contents of the main compounds when the species was grown under
monocropping or intercropping systems. A reduction in the contents of MBOA,
BOA, and quercetin was observed after lodging. Weed dry matter production was
lower at 45 DAL in all treatments with rye and radish residues when compared to the
control. The intercropping of rye with radish is an alternative management for weed
control in agroecological systems due to the physical barrier created by these species
and the presence of phenolic compounds with allelopathic potential. MenosThe identification of compounds with allelopathic potential produced
by cover crops can assist in selecting species for weed management purposes in
no-tillage systems. This study aimed to identify the main phenolic compounds with
allelopathic potential in the shoot of rye (Secale cereale L.) and radish (Raphanus
sativus L.) cover crops, as well as evaluate whether the cultivation system and
phenological stage may influence secondary metabolite production and weed
emergence. Samples of the shoot of these cover crops were collected at 60, 80, and
100 days after sowing (DAS) and 15 and 30 days after lodging (DAL) under field
conditions. Weed emergence was evaluated at 45, 75, and 100 DAL of cover crops.
The main compounds in rye were 6-methoxy-2-benzoxazolinone (MBOA) and
2-benzoxazolinone (BOA) under monocropping and intercropping, while flavonoid
quercetin was found in radish at all evaluated times. During the growing cycle, the
highest contents of phenolic compounds were found at the elongation stage
(60 DAS) of rye under monocropping and intercropping systems (9.33 and 8.22 mg g-1
DM, respectively) and at grain filling stage (100 DAS) for radish intercropped with
rye and black oat (3.24 and 3.83 mg g-1 DM, respectively). No differences were found
in the contents of the main compounds when the species was grown under
monocropping or intercropping systems. A reduction in the contents of MBOA,
BOA, and quercetin was observed after lodging. Weed dry matter production was
lower ... Mostrar Tudo |
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Palavras-Chave: |
allelopathy; BOA; cover crops; MBOA; quercetin. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02503naa a2200241 a 4500
001 1128632
005 2019-08-09
008 2019 bl uuuu u00u1 u #d
100 1 $aSOUZA, M.
245 $aPHENOLIC COMPOUNDS WITH ALLELOPATHIC POTENTIAL OF Secale cereale AND Raphanus sativus GROWN UNDER AN AGROECOLOGICAL NO-TILLAGE SYSTEM.$h[electronic resource]
260 $c2019
520 $aThe identification of compounds with allelopathic potential produced by cover crops can assist in selecting species for weed management purposes in no-tillage systems. This study aimed to identify the main phenolic compounds with allelopathic potential in the shoot of rye (Secale cereale L.) and radish (Raphanus sativus L.) cover crops, as well as evaluate whether the cultivation system and phenological stage may influence secondary metabolite production and weed emergence. Samples of the shoot of these cover crops were collected at 60, 80, and 100 days after sowing (DAS) and 15 and 30 days after lodging (DAL) under field conditions. Weed emergence was evaluated at 45, 75, and 100 DAL of cover crops. The main compounds in rye were 6-methoxy-2-benzoxazolinone (MBOA) and 2-benzoxazolinone (BOA) under monocropping and intercropping, while flavonoid quercetin was found in radish at all evaluated times. During the growing cycle, the highest contents of phenolic compounds were found at the elongation stage (60 DAS) of rye under monocropping and intercropping systems (9.33 and 8.22 mg g-1 DM, respectively) and at grain filling stage (100 DAS) for radish intercropped with rye and black oat (3.24 and 3.83 mg g-1 DM, respectively). No differences were found in the contents of the main compounds when the species was grown under monocropping or intercropping systems. A reduction in the contents of MBOA, BOA, and quercetin was observed after lodging. Weed dry matter production was lower at 45 DAL in all treatments with rye and radish residues when compared to the control. The intercropping of rye with radish is an alternative management for weed control in agroecological systems due to the physical barrier created by these species and the presence of phenolic compounds with allelopathic potential.
653 $aallelopathy
653 $aBOA
653 $acover crops
653 $aMBOA
653 $aquercetin
700 1 $aCOMIN, J. J.
700 1 $aKURTZ, C.
700 1 $aLOVATO, P. E.
700 1 $aLIMA, A. P.
700 1 $aKUHNEN, S.
773 $tPlanta Daninha, Londrina, PR$gv. 37, 1-12, 2019.
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