Search results for "lcsh:Botany"
showing 10 items of 177 documents
Nuevas plantas alóctonas relevantes para la Comunidad Valenciana
2012
Se indica la presencia en la Comunidad Valenciana de diversas especies vegetales alóctonas de las que no existían hasta ahora citas o datos georreferenciados.SUMMARY: The presence of several exotic plants in the Valencian Community (Spain), eithout former citations or geo-referenced indications, are given.
Index Balearicum: An annotated check-list of the vascular plants described from the Balearic Islands
2000
190 pages, 21 figures.
Contribuciones a la flora de Palencia (España)
2012
Se comentan una serie de citas de plantas vasculares encontradas en la provincia de Palencia (Castilla y León, España) que resultan raras en estos territorios.SUMMARY: Several new or rare taxa of vascular plants found in the region of Palencia (Castilla y León, Spain) are here commented.
The effect of climate on Burgundy vintage quality rankings.
2019
Aim: Based on consensus rankings from prominent rating authorities, we examined the importance of a suite of climatic variables, organized by winegrape phenological stage, in distinguishing between high- and low-ranked vintages in Burgundy.Methods and Results: Vintage ratings of Burgundy wines acquired from 12 sources were evaluated to develop consensus rankings for red and white wines from 1961–2015. Climate variables (air temperature, precipitation, degree-day accumulations, etc.) were organized by mean phenological stage and compared between good and poor vintages using Mann-Whitney U tests and multivariate stepwise discriminant function analysis. High temperatures, particularly during t…
Evolution of anthocyanin profile from grape to wine
2010
<p style="text-align: justify;"><strong>Aims</strong>: This study aimed at acquiring knowledge of the evolution of anthocyanins from grape to wine and the possibility of deducing the varietal origin of a wine from its anthocyanin profile.</p><p style="text-align: justify;"><strong>Methods and results</strong>: The anthocyanin « fingerprint », or profile, of a series of autochthonous Sicilian accessions and their respective young wines was determined by HPLC-DAD in 2008. Data were evaluated by taking into account the evolution of the percentages of side-ring dioxygenated and tri-oxygenated anthocyanins, the ratio between acetylated and p-coumaroylate…
Effects of traditional and light pruning on viticultural and oenological performance of bobal and tempranillo vineyards
2015
<p style="text-align: justify;"><strong>Aim</strong>: Light pruning may improve vine yield and quality although vineyard responses are variable. We assessed the effects of traditional manual pruning and mechanical light pruning on the viticultural and oenological performance of <em>Vitis vinifera </em>cv. Bobal and cv. Tempranillo.</p><p style="text-align: justify;"><strong>Methods and results</strong>: During 2008-2011, Bobal and Tempranillo vineyards underwent traditional pruning or light pruning. The effects of both pruning techniques were determined in vine vigour and yield, and grape and wine characteristics. Both cultivars responde…
Etude d'une microflore levurienne champenoise
1982
<p style="text-align: justify;">Pendant quatre années consécutives, on a suivi en Champagne, l'évolution de la microflore levurienne depuis la baie de raisin jusqu'au vin clair. Les résultats montrent une influence sensible sur la microflore, d'une part de certains traitements phytosanitaires et d'autre part des opérations liées à la vendange et au traitement des moûts. Grâce à un milieu de culture électif spécial, les auteurs ont amélioré la séparation des colonies de <em>S. cerevisiae</em> et de <em>S. bayanus</em>.</p><p style="text-align: justify;">+++</p><p style="text-align: justify;">For four consecutive years the evolution of yea…
Trehalose and trehalose-6-phosphate induce stomatal movements and interfere with ABA-induced stomatal closure in grapevine
2015
Aims: The effects of trehalose and trehalose-6-phosphate (T6P), among other sugars, were assessed on grapevine stomatal movements. Methods and results: Epidermal peels were used to assess the effects of sugars. Low concentrations of trehalose and T6P (1 μM) induced an osmotic-independent reduction of the stomatal aperture in light conditions. Furthermore, ABA-induced stomatal closure was reduced by sugar application in association with lower accumulation of reactive oxygen species in guard cells. Similar effects, although weaker, were observed in response to the disaccharides sucrose and maltose, but not in response to the monosaccharides fructose and glucose. Conclusion: This study clearly…
Phenological model performance to warmer conditions: application to Pinot noir in Burgundy.
2014
<p style="text-align: justify;"><strong>Aim</strong>: The current work aims to assess the performance of two phenological models - a linear model (<em>Grapevine Flowering</em> <em>Véraison</em> model, <em>GFV</em>) and a curvilinear model (<em>Wang and</em> <em>Engel</em> model, <em>WE</em>) - to warmer temperature conditions for the grapevine variety Pinot noir in Burgundy.</p><p style="text-align: justify;"><strong>Methods and results</strong>: Simulations using historical data from the 1973-2005 period were similar between models and consistent with observations. To mimic pot…
Sensory methodology developed for the investigation of sciaccarello wine concept
2004
<p style="text-align: justify;">The aim of the present work was to underline the existence of a sensory space relevant to Sciaccarello wines. Twenty-eight wines were selected for viticultural and enological characteristics, using 1/2 Sciaccarello/Non- Sciaccarello ratio. Sensory analyses (orthonasal then overall perceptions) were performed with a panel composed of seventeen judges. All of the judges were experienced in Sciaccarello wines knowledge. Statistical treatment by PCA was first carried out to display the consensus between the assessors. ANOVA was performed to discriminate accurate and inaccurate examples of Sciaccarello wines. This study demonstrated the existence of the sens…