Results: 13

Photosynthetic acclamatory response of Panicum antidotale Retz. populations to root zone desiccation stress

Braz. j. biol; 84 (), 2024
Abstract Growth of plants is severely reduced due to water stress by affecting photosynthesis including photosystem II (PSII) activity and electron transport. This study emphasised on comparative and priority targeted changes in PSII activity due to progressive drought in seven populations of Panicum ant...

Normalized difference vegetation index for desiccation evaluation with glyphosate + 2, 4-D in magnetized spray solution

Braz. j. biol; 83 (), 2023
Abstract Water magnetization and geoprocessing are increasingly utilized tools in weed management. Our objective was to study the influence of water magnetization on herbicide efficiency and to verify whether there is a relationship between control scores and the normalized difference vegetation index (N...

Dehydration tolerance and storage sensitivity of Campomanesia adamantium seeds

Biosci. j. (Online); 38 (), 2022
Cultivating native fruit species depends on the existence of technical and scientific information. In this context, studies on propagation are the basis for other investigations. Campomanesia adamantium is propagated by seeds, and quality seeds guarantee the formation of high-performance plants in the fi...

O grau de sensibilidade ao dessecamento das sementes da palmeira amazônica Oenocarpus bacaba depende do critério de germinação
Degree of seed desiccation sensitivity of the Amazonian palm Oenocarpus bacaba depends on the criterion for germination

Acta amaz; 51 (2), 2021
Ao longo da transição semente-plântula, vários critérios de germinação são usados em estudos de germinação de sementes de palmeiras. Em Oenocarpus bataua, esses critérios apresentam tolerância diferencial ao estresse térmico. Neste estudo, avaliamos a tolerância dos critérios de germina...

Drying and storage of Melanoxylon brauna Schott. seeds

Braz. j. biol; 81 (2), 2021
The objective of this work was to evaluate the sensitivity of Melanoxylon brauna Schott. tree legume seeds to desiccation and storage. In the drying experiment, the Melanoxylon brauna seeds were submitted to two drying conditions: a forced air circulation chamber (40.18 °C ± 0.13 and 28.48% ± 3.95 RH)...

Analysis of radiographic images and germination of Campomanesia pubescens (Mart. ex DC.) O.Berg (Myrtaceae Juss.) seeds under drying

Braz. j. biol; 80 (4), 2020
Abstract The objective of this study was to evaluate the internal morphology of seeds of Campomanesia pubescens (Mart. ex DC.) O. Berg with varying water content through X-ray image analysis, and correlate the images with the germination of these seeds. Fruits were collected in Jataí, Goiás, Brazil, an...

Desiccation tolerance in the Antarctic moss Sanionia uncinata

Biol. Res; 52 (), 2019
BACKGROUND: One of the most extreme environments on our planet is the Maritime Antarctic territory, due to its low-water availability, which restricts the development of plants. Sanionia uncinata Hedw. (Amblystegiaceae), the main colonizer of the Maritime Antarctic, has effective mechanisms to tolerate t...

Nonlinear model of arice drying process using neural networks

Vitae (Medellín); 25 (3), 2018
Background: The production quality of rice is highly depended on the drying process as drying weakens the rice kernel. A look at the production process of rice in the industry was taken. The drying of rice influences the storage capacity of the grain, the energy consumption, the final mass of the grain a...

Physiological, cellular and molecular aspects of the desiccation tolerance in Anadenanthera colubrina seeds during germination

Braz. j. biol; 77 (4), 2017
Abstract During germination, orthodox seeds become gradually intolerant to desiccation, and for this reason, they are a good model for recalcitrance studies. In the present work, physiological, biochemical, and ultrastructural aspects of the desiccation tolerance were characterized during the germination...

Progress in tear microdesiccate analysis by combining various transmitted-light microscope techniques

Biol. Res; 49 (), 2016
BACKGROUND: Tear desiccation on a glass surface followed by transmitted-light microscopy has served as diagnostic test for dry eye. Four distinctive morphological domains (zones I, II, III and transition band) have been recently recognized in tear microdesiccates. Physicochemical dissimilarities among th...