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Regrowth age modifies the leaf anatomy of Brachiaria genotypes 3
Mauri, Janaína; Silva, Gabrielle Avelar; Pereira, Daniele Laís; Techio, Vânia Helena; Davide, Lisete Chamma; Souza Sobrinho, Fausto; Pereira, Fabrício José.
 Changes in leaf anatomy were evaluated in genotypes of Brachiaria brizantha, Brachiaria decumbens, Brachiaria ruziziensis and three Brachiaria ruziziensis clones through tissue proportion in internerval and midrib regions at three regrowth ages. Plants were grown and cutting was performed after 60 days. Further, leaves were sampled at 8, 15 and 29 regrowth days and processed with usual plant microtechnique. The internerval region showed higher parenchyma percentage at 15 days for Clone 95 and similar values at 15 and 29 days for Clone 1. The proportion of vascular bundles was lower after 15 days in Clones 1 and 95 and 29 days in B. brizantha. In the midrib, the parenchyma proportion was higher at 29 days in B. brizantha and lower at 15 days in B....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Digestibility; Lignina; Urochloa; Brachiaria brizantha; Brachiaria decumbens; Brachiaria ruziziensis. Anatomia Vegetal.
Ano: 2018 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/39369
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Cytotoxic and genotoxic effects of Solanum lycocarpum St.-Hil (Solanaceae) on the cell cycle of Lactuca sativa and Allium cepa 3
Chiavegatto, Raquel Bezerra; Chaves, Ana Luisa Arantes; Silva, Izabela Caputo Assis; Lima, Luciana Alves Rodrigues dos Santos; Techio, Vânia Helena.
 Solanum lycocarpum St.-Hil popularly known as ‘fruta-de-lobo’ or ‘lobeira’ is native to the Brazilian Cerrado, and used in folk medicine due to its phytotherapic properties. The action of S. lycocarpum on the cell cycle and chromosomes in order to demonstrate whether there are aneugenic and/or clastogenic effects is unknown. Thus, this study aimed at investigating the cytotoxic and genotoxic potential of methanol and hexane extracts of S. lycocarpum on growth and cell cycle of Lactuca sativa and Allium cepa. Roots from both species were exposed for 72 hours to methanol and hexane extracts with 50, 100, and 200 µg mL-1 of S. lycocarpum. Slides were prepared by the squash technique and then analyzed to determine the mitotic index and the total of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: 2.03.02.02-9 aneugenic; Cerrado; Clastogenic; Lobeira; Medicinal plant. Citologia.
Ano: 2017 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/34082
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