An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
... Despite the ecological and socioeconomic impacts of wildfires, little attention has been paid to the spatiotemporal patterns of nighttime fire activity across the conterminous United States (CONUS). Daytime fire radiative power (FRP) detected by the Moderate Resolution Imaging Spectroradiometer (MODIS) was nearly evenly split (54% vs. 46%) between inside and outside wildfires from 2003 to 2020. In ...
Javier Hernández-Velasco; José Ciro Hernández-Díaz; J. Jesús Vargas-Hernández; Valerie Hipkins; José Ángel Prieto-Ruíz; Alberto Pérez-Luna; Christian Wehenkel
vigor, etc ; forests; hybrid species; hybridization; seedlings; Show all 5 Subjects
Abstract:
... Natural hybridization can manifest different evolutionary results, such as accelerating differentiation and facilitating speciation through the rapid origin of new biochemical compounds, physiological or morphological phenotypes that allow hybrid species to occupy new habitats, which for parental species would be inaccessible. However, these expectations are not always fulfilled, because natural h ...
... With the meteoric rise of the celebrity chef and the lure of the coveted Michelin star, it takes an individual with an elite skill set coupled with verve, vigor, and dedication to the craft to reach the highest echelons of the kitchen. This phenomenological case study highlights the journey of a chef, ‘Michel’, who has demonstrated the requisite recipe to achieve Michelin ratings. Through the in-d ...
vigor, etc ; Mendelian inheritance; juveniles; loci; pears; progeny; transgenes; weather; Show all 8 Subjects
Abstract:
... Breeding woody plants is a very time-consuming process, and genetic engineering tools have been used to shorten the juvenile phase. In addition, transgenic trees for commercial cultivation can also be used in classical breeding, but the segregation of transgenes in the progeny of perennial plants, as well as the possible appearance of unintended changes, have been poorly investigated. We studied t ...
vigor, etc ; anxiety; biological rhythms; cognition; males; questionnaires; research; temperature; Show all 8 Subjects
Abstract:
... The present study examined the effect of time-of-day in psychological responses and short-term maximal performances in elite male handball players. Eighteen male handball players performed, in a counterbalanced order and at three time-of-day (i.e., in the morning at 10:00 h, in the afternoon at 14:00 h and in the evening at 18:00 h) the Repeated Sprint Ability (RSA) and the Ball-Throwing Velocity ...
vigor, etc ; Cerambycidae; Rosaceae; bark; models; roughness; surveys; tree damage; trees; Show all 9 Subjects
Abstract:
... The expanding distribution and tree damage of the invasive, primary wood-borer Aromia bungii (Coleoptera: Cerambycidae), which kills trees of the Rosaceae family, is a problem in intruded areas. However, the tree characteristics associated with infestation by A. bungii, which are useful for early detection or prioritizing preventive measures, are not well examined. We investigated the presence or ...
vigor, etc ; agronomy; apples; canopy; lighting; rootstocks; trees; Italy; New Zealand; Show all 9 Subjects
Abstract:
... The adoption of high-density plantings (HDP) in apple orchards started with the introduction of dwarfing rootstocks from East Malling’s (UK) breeding program. A range of spindle-derived training systems have been developed to improve light interception/distribution with a variation in leader numbers. Many of these training systems cannot guarantee early, consistent, and uniform illumination of the ...
vigor, etc ; agriculture; cassava; corn; food security; staple crops; villages; Ghana; Show all 8 Subjects
Abstract:
... BACKGROUND: Crop yields are lowest in sub-Saharan Africa compared to other regions, and this is true even for such an important staple crop as maize. Persistence of patches of low crop vigour side-by-side to patches with healthier maize crops has been shown to significantly contribute to low yields on smallholdings. Farmers' perspectives on the presence of such poor patches are important as far as ...
vigor, etc ; Cannabis sativa; Musa; bioinformatics; biosynthesis; cannabinoids; cultivars; genes; genetic variation; Show all 9 Subjects
Abstract:
... Cannabis (Cannabis sativa L.) is typically propagated using stem cuttings taken from mother plants to produce genetically uniform propagules. However, producers anecdotally report that clonal lines deteriorate over time and eventually produce clones with less vigor and lower cannabinoid levels than the original mother plant. While the cause of this deterioration has not been investigated, one pote ...
vigor, etc ; biosynthesis; gibberellic acid; imbibition; plant growth; seed germination; seedlings; tomatoes; Show all 8 Subjects
Abstract:
... Priming of seed is intended to reduce the time to germination through activation of pre-germinative processes. Seed priming is controlled hydration followed by a drying (dehydration) process. The physiological processes during hydration (imbibition) were studied in detail in tomato. In contrast, gibberellic acid changes during the dehydration phase were not studied in detail. We hypothesize that t ...
vigor, etc ; Oryza sativa; cultivars; databases; gene interaction; genes; microRNA; plant hormones; rice; Show all 9 Subjects
Abstract:
... BACKGROUND: It is well known that seed vigor is essential for agricultural production and rice (Oryza sativa L.) is one of the most important crops in the world. Though we previously reported that miR164c regulates rice seed vigor, but whether and how other miRNAs cooperate with miR164c to regulate seed vigor is still unknown. RESULTS: Based on degradome data of six RNA samples isolated from seeds ...
vigor, etc ; calcium oxide; coprecipitation; mung beans; nanocomposites; pollution; research; seed germination; seedling growth; Show all 9 Subjects
Abstract:
... In this study, nanomaterials (ZnO and CaO) and ZnO-CaO nanocomposites (Zn₂₅Ca₇₅O; Zn₅₀Ca₅₀O; Zn₇₅Ca₂₅O) were prepared using co-precipitation method and physico-chemically characterized by XRD, FT-IR, and SEM with EDAX analysis. The XRD pattern of ZnO nanomaterials exhibits hexagonal wurtzite structure and CaO nanomaterials exhibit face-centered cubic (FCC) structure whereas nanocomposites (Zn₇₅Ca₂ ...
vigor, etc ; acrosome reaction; acrylamides; freeze-thaw cycles; glass; hyaluronic acid; hyaluronoglucosaminidase; hydrogels; viability; Show all 9 Subjects
Abstract:
... We report the development of a hydrogel‐based approach to select bull spermatozoa, a crucial step for successful assisted reproductive techniques (ARTs). Hyaluronic acid (HA) semi‐interpenetrated N‐isopropylacrylamide (PNIPAM) co‐20% N‐Tris (hydroxymethyl) methyl acrylamide (HMA) hydrogels were synthetized on glass surfaces and cultured in presence of frozen‐thawed bull spermatozoa. A fraction of ...
vigor, etc ; cultivars; flavor; grapes; isotope dilution technique; odors; research; rootstocks; stable isotopes; wines; Show all 10 Subjects
Abstract:
... BACKGROUND AND AIMS: ‘Green’ sensory characters in Shiraz wines were observed in wines produced from different rootstocks. The compounds responsible were investigated as these attributes are generally seen as negative. METHODS AND RESULTS: GC/MS‐olfactometry and stable isotope dilution analysis methods were used to identify and quantify a range of volatile compounds associated with ‘green’ sensory ...
vigor, etc ; chaparral; climate; climate change; drought; grasslands; mortality; sandstone; serpentine; shrublands; shrubs; California; Show all 12 Subjects
Abstract:
... Extreme drought and increasing temperatures can decrease the resilience of plant communities to fires. Not only may extremely dry conditions during or after fires lead to higher plant mortality and poorer recruitment, but severe pre‐fire droughts may reduce the seed production and belowground vigor that are essential to post‐fire plant recovery, and may indirectly facilitate invasion. We studied s ...
vigor, etc ; Brassica napus; biomass production; canola; gold; hypocotyls; pollution; regression analysis; research; seed germination; Show all 10 Subjects
Abstract:
... Exploring and utilizing the agronomic potential of deep-underground is one of the ways to cope with the challenges of sudden environmental change on agriculture. Understanding the effects of environmental stresses on the morphological and physiological indicators of crop seeds after their storage deep-underground is crucial to developing and implementing strategies for agriculture in the deep-unde ...
vigor, etc ; corn; hypoxia; oxygen; relative humidity; research; seed germination; seed quality; shelf life; temperature; Show all 10 Subjects
Abstract:
... Low oxygen atmospheres have proven to be effective to protect seed quality in many species during storage. In maize, however, the evidence is ambiguous since positive, negative, and neutral effects were reported. These apparent contradictions might relate to the different experimental conditions explored in previous studies (i.e., combinations of oxygen concentration, relative humidity, and temper ...
vigor, etc ; Botrytis cinerea; Vitis vinifera; fruit set; gibberellic acid; leaves; plant growth; vines; viticulture; Show all 9 Subjects
Abstract:
... Compact bunches have been often associated with higher susceptibility to Botrytis cinerea and therefore reduction in berry quality in grapevine. The objective of this study was to evaluate three management methods (early leaf removal, gibberellic acid, and their combination) for reducing bunch compactness in Vitis vinifera cv. Pinot gris trained in two different training systems with contrasting v ...
Nancy A. Godínez-Garrido; Jorge A. Torres-Castillo; Juan G. Ramírez-Pimentel; Jorge Covarrubias-Prieto; Francisco Cervantes-Ortiz; Cesar L. Aguirre-Mancilla
vigor, etc ; Phaseolus vulgaris; Sesamum indicum; agronomy; beans; chitosan; crops; germination; plant establishment; plantlets; seedlings; Show all 11 Subjects
Abstract:
... In seed technology, the use of biocompatible materials, such as chitosan, has been demonstrated to improve the germination process and establishment of seedlings. This research is focused on the effect of a chitosan coating on the germination and development of sesame and bean plantlets. The seeds were treated with different coating techniques and combinations of chitosan: chitosan solutions at 0. ...
... Seed vigor is greatly influenced by harvest time. In this study, three conventional japonica rice varieties were used to investigate the optimal harvest time. Germination potential (GP), germination rate (GR), germination index (GI), vigor index (VI), mean germination time (MGT), field emergence rate (FER) and controlled deterioration germination rate (CDGR) were determined in 2018 and 2019. The r ...