1,721,236 research outputs found
Effects of Stalk Removal on Carbohydrate Metabolism in Flooded Bulrush Rhizomes Schoenoplectus lacustris (L.) Palla
No full textCutting off of the shoots leads to a lack of oxygen and to an inte&uption of photosynthate flow to the rhizomes of the bulrush (Schoenoplectus lacustris (L.) PALLA). In summer, when the rhizomes possess only small quantities of starch and have a high metabolic activity the bulrush is endangered by repeated loss of shoots. The vitality of the plant is not jeopardized by a loss of the shoots in winter, when the rhizomes contain large amounts of carbohydrate and their metabolic activity is low
Notulae alla Check-list della Flora vascolare Italiana 12 - Notulae: 1844 Chenopodium rubrum L., 1845 Schoenoplectus triqueter (L.) Palla. +UMB.
No full textLa notula riporta la segnalazione del primo rinvenimento delle entità Chenopodium rubrum L. e Schoenoplectus triqueter (L.) Palla. nel territorio della regione Umbria
Dielectric behavior of anisotropic inhomogeneities: interior and exterior points Eshelby tensors
No full textAdaptation of Respiration and Fermentation to Changing Levels of Oxygen in Rhizomes of Schoenoplectus lacustris (L.) Palla and Its Significance to Flooding Tolerance
No full textIn rhizomes of the Bulrush [Schoenoplectus lacustris (L.) Palla] it was shown that O2 consumption and activity of the enzymes cytochrome oxidase, ADH, and LDH are able to adapt to changing levels of O2. When gassed with pure N2, an increase in fermentation of approximately 2½ times the original value was recorded after 3 days. Under the same conditions an initial drop in energy charge was noted, but after 3 days a subsequent increase to 0,75 took place. This last indicates that an equilibrium between ATP-producing and ATP-consuming processes has been reached, comparable to that in rhizomes with sufficient O2 supply. The adaptational processes which occur, can be detected after 3 days and are reversible
Flooding Tolerance in Bulrush (Schoenoplectus lacustris (L.) Palla): Relations between Oxygen Supply and Adenylate Energy Charge of the Rhizomes in Dependence on the Environmental Oxygen Concentrations
No full textStalked rhizomes of the bulrush (Schoenoplectus lacustris (L.) Palla) contain an oxygen gradient from the shoot to the rhizome. The internal oxygen concentration does not fall below 10 %, even if the environment of the rhizome is oxygen free. The oxygen provision is used up 1 h after cutting the stalk. Plants in their natural habitat behave in the same way.
The difference in oxygen uptake between stalked rhizomes and rhizomes without stalks demonstrates an apparent oxygen transport. The calculation of the true oxygen transport shows, that more than 70 % of the oxygen used is delivered from the shoot. Shortening of the stalk improves the oxygen supply of the rhizomes
The good oxygen supply is also demonstrated by the high values of the energy charge (>0.8). Unstalked rhizomes have intermediary valus (0.5—0.7).
From these results we conclude that efficient oxygen transport is the main strategy in relation to the flooding tolerance of this plan
Atomistic virtual laboratory for nonlinear nanomechanics: application to the Eshelby problem
No full text<smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="place" downloadurl="http://www.5iantlavalamp.com/"> Less known uses of <i style="">Schoenoplectus articulatus</i> (L.) Palla of Lower Assam </smarttagtype>
No full text599-600
A less known use of Schoenoplectus articulatus (L.) Palla (Family Cyperaceae) from Lower Assam is reported. The methodology of making Laddu from the roasted endosperm of
matured nuts is provided.
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Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Schoenoplectus lacustris (L.) Palla
No full textSchoenoplectus lacustris (L.) Palla − Palasca, vallée de l’Ostriconi, étang de Cannuta, 5.6.201 4, Crouzet, N. s.n. (Hb. privé); Ostriconi [42°40’N 9°04’E], étang, 1.5.198 8, Deschâtres, R., s.n. (G); secteur du Cintu, environs d’Île-Rousse, près de Monticello, au Pozzu d’Arbu, entre la D63 et la voie de chemin de fer [42°38’N 8°59’E], dans l’étang (monospécifique), abondant, 100 m, 8.5.198 5, Jeanmonod, D. & D. Roguet J2256 (G); secteur Cintu, commune de Calvi, à la sortie E de la ville, lieu-dit Alzeta au S de la plage, zone humide en arrière du camping, 3.6.201 4, O’deye-Guizien, K. cbnc observation; réservoir de Teppe Rosse (à l’W d’Aleria), rive NE [42°06’N 9°29’E], berge sablo-graveleuse en pente douce, peuplement d’hélophytes (env. 2 m de hauteur), 35 m, 8.8.198 7, Lambinon, J. 87/549 (G); secteur plaine orientale, commune de Ghisonaccia, à l’E de la ville, marais d’Erba Rossa à l’extrémité de la route D144, groupement de grands hélophytes, 30.10.201 4, Delage, A. & L. Nery cbnc observations; secteur Rotondu, commune de Grossetto-Prugna, au sud des Hameaux de Porticcio, à l’E de la D55, prairie humide à l’W d’Uccioli, 31.10.201 4, Nery, L. cbnc observation; à l’E de Porto-Pollo, étang de Tanchiccia [41°43’N 8°49’E], marécage, dernière ceinture d’Iris, abondant, 5 m, 24.4.198 5, Jeanmonod, D. & D. Roguet J1298 (G); Figari, près du pont de Figari [41°29’N 9°8’E], marais, dans 20 à 30 cm d’eau, 5 m, 28.4.198 5, Jeanmonod, D. & D. Roguet J1633 (G). Ce taxon mentionné comme R dans Fl. Corsica (ed. 2) (JEANMONOD & GAMISANS: 205, 2013) était peu signalé dans la littérature et, à notre connaissance, seulement à Bastia, Biguglia, embouchure du Liamone et de la Sagone, Campo di Loro, Caniccia, Bonifacio (BRIQUET, Prodr. Fl. Corse 1: 230, 1910; LITARDIÈRE. Bull. Acad. Int. Géogr. Bot. 19: 96-211, 1909; ainsi que dans les relevés de PARADIS & ORSINI, Trav. Sci. Parc Nat. Rég. Rés. Nat. Corse, Fr. 38: 61-119. 1992), soit dans les secteurs du Cap Corse, de la Plaine orientale, de Rotondu, IncudineBavella et Bonifacio. Les mentions ci-dessus montrent sa présence dans de nouveaux secteurs tels que ceux de Tenda, Cintu, Renosu et Ospedale-Cagna. Elles montrent aussi que ce taxon n’est pas rare, son statut de fréquence étant plutôt peu fréquent (PF) et certainement sous-observé ou sous-mentionné. Dans l’étang de Cannuta, il est très présent, et est bien souvent l’élément structurant de communautés originales d’hélophytes et amphiphytes peu fréquents sur l’île, telles que Typha angustifolia, Carex elata, C. riparia, Ranunculus lingua, entre autres.Published as part of Jeanmonod, Daniel, 2015, Notes à la flore de Corse, XXV, pp. 109-140 in Candollea 70 (1) on page 118, DOI: 10.15553/c2015v701a10, http://zenodo.org/record/572089
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