Underground Stem
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Structural features of species of Asteraceae that arouse discussions about adaptation to seasonally dry environments of the Neotropics
ABSTRACT Seasonally-dry environments of the Neotropics, such as the South American Chaco, exert selective pressures on vegetation through a pronounced water deficit. We describe the underground system and leaf anatomy of three species of Asteraceae from the Brazilian portion of the Chaco (Pterocaulon purpurascens Malme, Wedelia trichostephia DC., and Pectis
Acta Bot. Bras.. Publicado em: 27/11/2017
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2. How does resprouting response differ among three species of savanna trees and in relation to plant size?
ABSTRACT Cerrado tree species can survive fire by resprouting. Generally, large and less damaged plants produce new branches and leaves from stem buds (aerial), whereas small and highly injured individuals would resprout from the stem base or from underground organs (basal). We compared the three most common Cerrado woody plant species in a savanna area of t
Acta Bot. Bras.. Publicado em: 2016-12
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3. Influência de épocas de plantio, inseticidas e população de plantas sobre pragas e rendimento do arroz de sequeiro.
A influência de quatro épocas de plantio (20.10.87, 17.11.87, 21.12.87 e 14.01.88),três densidades de semeadura (32,54 e 75 sementes/m) e cinco inseticidas (carbofuran 50G, furathiocarb 666TS, carbofuran 350 TS, thiodicarb 350 TS e deltamethrin 25 CE) sobre pragas e rendimento de grãos do arroz de sequeiro, foi estudada em experimento com a cultivar IAC-
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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4. Influencia de epocas de plantio, inseticidas e populacao de plantas sobre pragas e rendimento do arroz de sequeiro.
A influencia de quatro epocas de plantio (20.10.87, 17.11.87, 21.12.87 e 14.01.88),tres densidades de semeadura (32,54 e 75 sementes/m) e cinco inseticidas (carbofuran 50G, furathiocarb 666TS, carbofuran 350 TS, thiodicarb 350 TS e deltamethrin 25 CE) sobre pragas e rendimento de graos do arroz de sequeiro, foi estudada em experimento com a cultivar IAC-47.
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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5. Underground systems of Asteraceae from the São Paulo state Cerrado: anatomical, ecological and reproductive approaches / Sistemas subterrâneos de Asteraceae do Cerrado paulista: abordagens anatômica, ecológica e reprodutiva
A presença de sistemas subterrâneos em plantas do Cerrado é uma característica que há algum tempo vem atraindo a atenção de pesquisadores. Suas funções adaptativas e ecológicas já são bem conhecidas, mas devido à diversidade de tipos a denominação desses órgãos nem sempre é aplicada corretamente, já que muitas vezes são realizados apenas
Publicado em: 2008
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6. Ciclo biológico, comportamiento y censo del picudo del camu camu, Conotrachelus dubiae O'Brien 1995 (Coleoptera: Curculionidae) en Pucallpa, Perú
Camu camu weevil Conotrachelus dubiae O'Brien, 1995 is a one of the main pests of camu camu (Myrciaria dubia H.B.K. Mc Vaugh) in Peruvian Amazonia. The aim of this study was to determine the biological cycle of this insect under laboratory conditions, to describe its behavior and population numbers under field conditions in Pucallpa, Ucayali, Peru. The perce
Acta Amazonica. Publicado em: 2008
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7. Chemical constituents of the underground stem bark of Duguetia furfuracea (Annonaceae)
No presente trabalho foi realizado um estudo fitoquímico com os diferentes extratos obtidos a partir de órgãos subterrâneos de Duguetia furfuracea (Annonaceae), o qual incluiu o teste de toxicidade para Artemia salina. O extrato alcaloídico, obtido das cascas do caule subterrâneo, conduziu ao isolamento de (-)-duguetina beta-N-óxido, de (-)-duguetina,
Journal of the Brazilian Chemical Society. Publicado em: 2007
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8. Ecosystem rooting depth determined with caves and DNA
Belowground vertical community composition and maximum rooting depth of the Edwards Plateau of central Texas were determined by using DNA sequence variation to identify roots from caves 5–65 m deep. Roots from caves were identified by comparing their DNA sequences for the internal transcribed spacer (ITS) region of the 18S–26S ribosomal DNA repeat agains
The National Academy of Sciences.
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9. Biological suppression of potato ring rot by fluorescent pseudomonads.
Three strains of fluorescent pseudomonads (IS-1, IS-2, and IS-3) isolated from potato underground stems with roots showed in vitro antibiosis against 30 strains of the ring rot bacterium Clavibacter michiganensis subsp. sepedonicus. On the basis of morphological and biochemical tests and fatty acid analysis, IS-1 and IS-2 were identified as Pseudomonas aureo
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10. Early Events in the Fusarium verticillioides-Maize Interaction Characterized by Using a Green Fluorescent Protein-Expressing Transgenic Isolate
The infection of maize by Fusarium verticillioides can result in highly variable disease symptoms ranging from asymptomatic plants to severe rotting and wilting. We produced F. verticillioides green fluorescent protein-expressing transgenic isolates and used them to characterize early events in the F. verticillioides-maize interaction that may affect later s
American Society for Microbiology.