Specific Leaf
Mostrando 1-12 de 797 artigos, teses e dissertações.
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1. The aquatic species Pontederia azurea and P. crassipes (Pontederiaceae) in the Pantanal, Brazil: evidence of how plant structure can simultaneously reflect phylogeny and ecology
ABSTRACT Hydric fluctuations in the Pantanal comprise annual dry and wet seasons that modify local diversity and plant morphology and anatomy. Widespread in this wetland are the sympatric Pontederia azurea and P. crassipes, which, although primarily aquatic, can also develop in non-flooded environments. This study undertook a comparative investigation of the
Acta Bot. Bras.. Publicado em: 2021-03
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2. Leaf area estimation with nondestructive method in cassava
ABSTRACT The objective of this study was to create a single mathematical equation able to estimate the leaf area of different cassava cultivars from one lineal dimension without destroying any plant tissue. Two hundred leaves per cultivar from ten cultivars were used to calibrate the model and more than one hundred leaves per cultivar were used to test its p
Bragantia. Publicado em: 2020-12
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3. Comparative vegetative anatomy of Neotropical Goodyerinae Klotzsch (Orchidaceae Juss.: Orchidoideae Lindl.)
ABSTRACT The Neotropical genera Aspidogyne and Microchilus (Goodyerinae, Cranichideae, Orchidaceae) comprise ca. 200 rainforests terrestrial species. Although species of Goodyerinae are described with similar anatomy to other taxa of Cranichideae, some anatomical characteristics appear to be specific to the subtribe. Our goal was to characterise the anatomic
Acta Bot. Bras.. Publicado em: 2020-09
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4. A survey of RNA genome viruses in Lima bean crops of Northeastern Brazil
ABSTRACT Lima bean plants showing mosaic and leaf distortion symptoms, similar to those induced by viruses, were observed in several production areas in the states of Ceará and Piauí, Northeastern Brazil. The aim of this study was to identify RNA genome viruses that infect lima bean. Field research was conducted from 2017 to 2018. Fifty-five symptomatic sa
Bragantia. Publicado em: 2020-09
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5. Does an urban environment affect leaf structure of Eugenia uniflora L. (Myrtaceae)?
ABSTRACT External factors can interfere with the structure and biological activity of plants. Nevertheless, the susceptibility of plants to specific environmental conditions varies, which raises many questions about the behavior of medicinal plants when grown in urban areas. This study aims to detect possible changes induced by exposure of Eugenia uniflora L
Acta Bot. Bras.. Publicado em: 2020-06
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6. Interaction between growth strategies and phosphorus use efficiency in grasses from South America natural grasslands
ABSTRACT South American natural grasslands are composed of several species with different growth strategies, with variations in specific leaf area (SLA), leaf dry matter content (LDMC), specific root length (SRL) and specific root area (SRA). The objective of this study was characterizing in grasses cultivated with different levels of phosphorus (P) in the s
Rev. Ceres. Publicado em: 2020-02
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7. Morphology of yellow passion fruit seedlings submitted to triazole induced growth inhibition
RESUMO A restrição do vigor vegetativo de mudas pode ser uma estratégia para otimização da modulação frente à estresses bióticos e abióticos após o transplantio. O objetivo desse estudo foi verificar se os parâmetros morfológicos de mudas de maracujazeiro amarelo (Passiflora edulis) são afetados pela restrição do crescimento com aplicação d
Ciênc. agrotec.. Publicado em: 20/12/2019
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8. Agronomic performance of white oats cultivated under fertigation with treated sewage effluent and definition of critical limits of Normalized Difference Vegetation Index
ABSTRACT One of the benefits of irrigation with wastewater in agriculture is the reduction in the use of mineral fertilizers and the increase in crop yield. For wastewater application, the use of remote sensing can help to define specific management areas. The aim of this study was to evaluate the yield and the growth of irrigated white oats (Avena sativa L.
Bragantia. Publicado em: 13/12/2019
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9. Crescimento e partição de massa seca em plantas jovens de amburana (Amburana cearensis (Fr. All.) AC Smith) e de umbuzeiro (Spondias tuberosa Arr. Cam.)
Resumo As espécies amburana (Amburana cearensis (Fr. All.) A. C. Smith) e o umbuzeiro (Spondias tuberosa Arr. Cam.) possuem adaptações fisiológicas e morfológicas às condições climáticas do bioma caatinga e atualmente estão sob ameaça de extinção. Objetivou-se com a realização deste trabalho caracterizar a partição de fotoassimilados das mud
Ciênc. Florest.. Publicado em: 02/12/2019
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10. Residues of Invasive Forage Species Inhibits the Growth of Caryocar brasiliense
RESUMO: O crescimento de mudas de espécies nativas pode ser afetado por substâncias alelopáticas liberadas por espécies forrageiras invasivas principalmente em áreas de recomposição natural. Objetivou-se nesta pesquisa avaliar as características de crescimento do pequizeiro influenciadas por concentrações de resíduos vegetais das espécies forrage
Planta daninha. Publicado em: 02/12/2019
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11. Comparative Morphological, Anatomical and Ecological Studies on Two Varieties of Iris unguicularis subsp. carica (Iridaceae) in Turkey
RESUMO: Íris é o maior gênero da família Iridaceae com 50 espécies, sendo 24 endêmicas da Turquia. Neste estudo, comparamos caracteres morfológicos, anatômicos e ecológicos de duas variedades de Iris unguicularis subsp. carica (Iris unguicularis subsp. carica var. carica e Iris unguicularis subsp. carica var. syriaca) da Turquia. Relatamos algumas c
Planta daninha. Publicado em: 09/09/2019
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12. [PROVISIONAL] Overexpression of rice F-box protein OsFBX322 confers increased sensitivity to gamma irradiation in Arabidopsis
Abstract Ionizing radiation has a substantial effect on physiological and biochemical processes in plants via induction of transcriptional changes and diverse genetic alterations. Previous microarray analysis showed that rice OsFBX322, which encoded a rice F-box protein, was downregulated in response to three types of ionizing radiation: gamma irradiation, i
Genet. Mol. Biol.. Publicado em: 02/09/2019