bluuebunny/crossref_metadata_2025_split huggingface dataset:
Structure and distribution of plant trichomes in relation to taxonomy: Hibiscus L
Authors: Raja Rao S. Shanmukha 
Published: August 2010

AbstractStructure and organographic distribution of trichomes in ten species of Hibiscus have been described. The trichomes are either unicellular or multicellular. All the trichomes are differentiated into a foot and a body. Uniseriate filiform clavate and pyriform hair types possess a body which is further differentiated into a stalk and a head. A total of fifteen trichome types are recognised in the taxon and they are classified into four trichome categories. In a species, the number of trichome types ranges between seven (H. lobatus) and thirteen (H. syriacus and H. vitifolius). Of these, unicellular uncinate hair is exclusive to H. lobatus, thus being diagnostic in its identification. Further, flagellate trichome types are recognised for the first time in Hibiscus. Their exclusive presence at the sepal adaxial distal margins help in protecting the young flowers in bud condition.
Notes on the generaVicatiaDC.,SinodielsiaH. Wolff andTongoloaK. Wolff (Umbelliferae)
Authors: Pimenov M. G. , Kluykov E. V. , Leonov M. V. , Mukherjee P. K. 
Published: August 2010

AbstractA revision of some critical questions of taxonomy of central‐ and south‐asian genera of the UmbelliferaeVicatia, Sinodielsia, andTongoloahave been carried out. The identity of centralasiaticCarum atrosanguineumwithV. wolffianabut not withV. coniifoliahave been indicated and, as a result, a new combination —V. atrosanguinea— have been proposed. A new species of this genus —V. nepalensis— was described from Nepal. Using cluster analysis and principal coordinate analysis and basing on the distribution of the states of 13 characters in known species the relationships betweenVicatia, TongoloaandSinodielsiahave been investigated and the limits of the three genera were elucidated. Three new combinations within generaSinodielsiaandTongoloahave been proposed. A key identification of the above mentioned genera have been compiled.
The carotenoid content of lichens of the Cladonia genus from Mecklenburg
Authors: Czeczuga B. , Doll R. 
Published: August 2010

AbstractThe presence of carotenoids in 10 species of the lichens of the Cladonia genus from Mecklenburg was studied. The investigations revealed the presence of the following carotenoids: bisdehydrolycopene, β‐carotene, β‐cryptoxanthin, zeaxanthin, lutein, 3‐epilutein, lycopene‐5,6‐epoxide, β‐carotene epoxide, antheraxanthin, lutein epoxide, mutatoxanthin, violaxanthin, neoxanthin, α‐doradexanthin, β‐doradexanthin, astaxanthin and rhodoxanthin.The total carotenoid content of the material ranged from 19.1 to 36.0 μg g−1 dry weight.
Systematic anatomy of Brachiaria (TRIN.) GRISEB. (Poaceae)
Authors: Ogundipe O. T. , Olatunji O. A. 
Published: August 2010

AbstractThe systematic anatomical investigation of 16 West African species of Brachiaria were carried out. The significance of the microscopic observation outlined in the work can be correlated with the taxonomic affinities of the genus and also employed in the identification and classification of sterile materials. The species of the genus are characterized by the embedment of outermost vascular bundles in the outer margin of sclerenchyma, the presence of parenchyma cells in the central ground tissue, the absence of papillae in the long cells of the epidermides, the presence of prickles most especially on the margins on the lamina. The anatomical characters which may help in distinguishing the various species one from another include the shape of subsidiary cells in surface view, dermal appendages, outline of leaf blade in transection and type of Kranz tissue. An artificial key to the 16 species of Brachiaria based on the anatomical features is provided.
Sporogenesis and gametogenesis of some Boraginaceae
Authors: Rao B. Hanumantha , Rao P. S. Prakasa 
Published: August 2010

AbstractEmbryological details pertaining to the development and structure of anther and ovule, sporogenesis, gametogenesis and gametophytes of 9 species of 7 genera belonging to Boraginaceae are described. Anther is tetrasporangiate with ‘Dicotyledonous type’ of wall development. The wall includes the epidermis, endothecium, single middle layer and secretory type tapetum. Cytokinesis is simultaneous. Tetrahedral, decussate and isobilateral tetrads are formed. Pollen grains are mostly dumb‐bell shaped and 3‐celled at shedding stage. Ovules are unitegmic, tenuinucellate and hemianatropous or anatropous. Megaspore tetrads are linear or ‘T’ shaped. The female gametophyte development conforms to Polygonum type except in Lycopsis and Anchusa where it is predominantly of Allium type. The mature embryo sac consists of two pear‐shaped synergids with filiform apparatus, an egg cell, two polars and three ephemeral antipodals.
Study ofChenopodium subopulifoliumJ. MURR emend. D
Authors: Dvořák F. 
Published: August 2010

AbstractC. subopulifoliumJ. MURR, Magy. Bot. Lap. 1, p. 340, Tab. 2, Fig. 8, 1902 emend. D. is ± stabilized hybridogenous species. In his genotype there participate:C. pseudostriatum(ZSCHACKE) J. MURR, Dt. bot. Monatsschr. 19, p. 51, 1901;C. × gruelliiAELLEN, Acta Mus. Moraviae, Sci. Nat., Brno 56–57, p. 167, 1971–1972 (=C. ficifolium × pseudopulifolium).I subsumeC. subopulifoliumJ. MURR emend. D. together withC. interjectumJ. MURR emend. D., C.laciniatumJ. MURR emend. D.,C. canescensD.,C. pseudoborbasiiJ. MURR,C. mediterraneum(AELLEN) D. andC. fallax(AELLEN) D. under the seriesPseudostriata D.
Phenolic acid profile of Phyllanthus s. 1. (Euphorbiaceae)
Authors: Acharya Hemalatha , Nageswar G. , Radhakrishnaiah M. 
Published: August 2010

AbstractThe quantified data on the distribution of the phenolic acids in the nine species of Phyllanthus s. 1. show a wide range of affinity, poor correlation with earlier grouping and indistinctiveness for elevation of species to higher ranks.
Cytomorphological studies of some weedy species of the family Leguminosae from Jos Plateau, Nigeria
Authors: Husaini S. W. H. , Iwo G. A. 
Published: August 2010

AbstractChromosome numbers of twenty‐five weed species belonging to the generaCrotalaria, Eriosema, IndigoferaandSesbaniawere determined for the first time from Jos Plateau, Nigeria. Two species ofCrotalaria, C. lachnosemaandC. longifoliolataare reported cytologically for the first time, while the chromosome number of theCrotalaria recta, (n= 7) andEriosema psoraleoides, (n= 10) do not agree with the previous reports. Chromosome number of the rest of the species agrees with their previous cytological reports.
Transverse dimensions of softwood tracheids
Authors: Schultze‐Dewitz G. , Götze H. 
Published: August 2010

AbstractFor 130 years transverse dimensions of softwood tracheids have been the subject of study. Selected references show that diameter and wall thickness of the cells have been more thoroughly studied than lumen diameter. An attempt was made to correlate these three anatomical parameters among each of them and with wood density in 15 coniferous tree species and Ginkgo biloba L. In the case of an old Scots pine (Pinus sylvestris L.) it will be emphasized besides juvenile and mature wood the so‐called »overmature wood«, by which is assumed its formation being due to symptoms of senescence.
Preliminary ecological studies on Lithophytes and Chasmophytes in South‐West Nigeria
Authors: Sharma B. M. 
Published: August 2010

AbstractRocky areas constitute unfavourable habitat for plant growth due to lack of soil, water and nutrients. The number of plants were more during wet season than the dry season. Based on the Importance Value Index (IVI), nineteen species organized into Euphorbia‐Tridax‐Commelina community.Study was focussed on dominant plants, namely love grass Eragrostis tenella (L.) P. BEAUV. ex ROEM. et SCHULT.), garden spurge (Euphorbia hirta L.), guinea grass (Panicum maximum JACQ.) and Tridax procumbens L. Guinea grass was the tallest having highest specific leaf area, and contributed maximum biomass. The highest leaf‐area ratio wa for garden spurge. A high association index exist between garden spurge and T. procumbens; love grass and T. procumbens; and guinea grass and red spiderling (Boerhavia coccinea). Conductivity, moisture content, organic matter, contents of potassium und sodium were higher in the soils from crevices as compared to that from rock surface, pH was alkaline. Seeds of love grass were the lightest. The percentage germination for the four plants were maximum in continuous light, at 20 °C and when sown at surface soil.
A tool for better identification of Dicranostigma species (Papaveraceae
Authors: Brückner C. 
Published: August 2010

AbstractThough only three Dicranostigma species are cultivated in botanical gardens, incorrect determination is frequent. This is mainly due to the fact that there is no homogeneous species “D. franchetianum”. The type specimen proved to belong to D. leptopodum, thus rendering the name “D. franchetianum” a later synonym of D. leptopodum that has to be dropped. Consequently, GÜNTHER (1975) described a part of the taxon named “D. franchetianum” but differing from D. leptopodum as a new species D. erectum GÜNTHER. Since that publication remained widely unknown, D. erectum is further on cultivated wrongly as “D. franchetianum” (this name is, however, also applied to D. leptopodum). Still more frequently its seeds are labeled as “Glaucium vitellinum” in the international seed exchange.–In the present paper, figures and a tabulation of distinguishing characters are given to facilitate correct determination of the species D. lactucoides, D. leptopodum, and D. erectum.
Collecting plant‐genetic resources in Georgia (South Ossetia, Dzhavakheti) 1990
Authors: Beridze R. K. , Hanelt P. , Girgvliani T. S. , Kandelaki V. N. , Mandžgaladze D. 
Published: August 2010

AbstractIn the summer of 1990 a tenth and last joint field mission has been organized to study indigenous material of cultivated plants in Georgia. The mission went to the South Ossetian Autonomous Region and to the historical province of Dzhavakheti in South Georgia. Severe gene‐erosion caused by several factors led to a drastic decrease of the former broad variability of cultivated crops and their local infraspecific forms. This process culminated in the fifties and is especially true for cereals and indigenous grain legumes as in other regions of Georgia. Therefore the few collected accessions of these taxa are the most valuable ones of the material. The collection comprises altogether 140 accessions of cereals, legumes as well as vegetable and spice plants. Most numerous are as usual the garden beans, Phaseolus vulgaris, from which 17 different seed variants could be detected mainly from the Ossetian local races of this crop. Wild plants do play a considerable role in the daily diet especially in the high‐mountain villages.
An electrophoretic analysis of the variation in the seed storage proteins of Vicia faba L. cultivars
Authors: Sammour R. H. 
Published: August 2010

AbstractThe seed proteins of both single seed and composite sample of some Vicia faba L. cultivars were analyzed on SDS‐PAGE. Each seed exhibited a distinctive electrophoretic pattern. The variation was detected amongst the polypeptides with molecular weight greater than 45 KD. The electrophoretic pattern of the bulk extracted sample was characteristic for each cultivar, therefore it was recommended to be used for cultivar identification.
Carotenoids in lichens from Primorski Territory (Vladivostok region) and North Korea
Authors: Czeczuga B. , Skirina I. F. , Dzae Ri Jong , Maximov O. B. , Stepanenko L. S. 
Published: August 2010

AbstractColumn and thin‐layer chromatography revealed the presense of the following carotenoids in the thalli of 20 lichen species from Primorski Territory and North Korea: α‐carotene, β‐carotene, lycoxanthin, lycophyll, rubixanthin, β‐cryptoxanthin, zeaxanthin, lutein, 3′‐epilutein, lutein epoxide, antheraxanthin, adonixanthin, phoenicoxanthin, canthaxanthin, astaxanthin, neoxanthin, violaxanthin, mutatoxanthin, auroxanthin, luteoxanthin, rhodoxanthin, capsochrome, apo‐12′‐violaxanthal and β‐citraurin.The total content of carotenoids ranged from 16.6 (Parmelia caperata) to 82.4 μg g−1 dry weight (Alectoria lata).
Die Vegetation der Krummen Seen bei Lychen und Kratzeburg in Mecklenburg‐Vorpommern
Authors: Doll R. 
Published: August 2010

AbstractIn der vorliegenden Arbeit wird die Vegetation der Krummen Seen bei Lychen und Kratzeburg behandelt. Es konnten folgende bemerkenswerte Pflanzengesellschaften festgestellt werden: Najadetum intermediae, Potamogetonetum alpini, Ceratophylletum demersi, Charetum rudis, Nitellopsidetum obtusae, Charetum fragilis, Charetum tomentosae, Charetum contrariae, Nitello‐Vaucherietum dichotomae, Myriophylletum alterniflori, Potamogetonetum praelongi, Potamogetonetum perfoliati, Stratiotetum submersi, Nymphaeo‐Nupharetum lutei, Potamogetono‐Polygonetum natantis, Phragmitetum communis, Typhetum angustifoliae, Schoenoplectetum lacustris, Cladietum marisci, Equisetetum fluviatilis, Thelypterido‐Phragmitetum. Beide Seen gehören zum Typ des mesotrophen, alkalischenNajas‐ bzw.Chara‐Klarwassersees.
Numerical taxonomy of the tribe Lepidieae and some other genera With one Figure and 5 Tables
Authors: El Naggar S. M. 
Published: August 2010

AbstractMorphological data were gathered from herbarium and living specimens representing 22 taxa of Cruciferae in Egypt. Specimens were scored for 16 vegetative, one inflorescence, 18 floral, 18 fruit and eight seed characters. The data were analysed using cluster analysis and the results used in reclassification of the studied taxa.
Eine neue Protopinaceae der Formgattung PinoxylonKNOWLTON emend. Read, P. parenchymatosum sp. nov., aus tertiären Schichten der Insel Limnos, Griechenland Mit einer Tafel
Authors: Süss H. , Velitzelos E. 
Published: August 2010

AbstractZwei fossile Holzreste aus dem Tertiär von Limnos (Griechenland) wurden untersucht und als Pinoxylon parenchymatosum sp. nov. beschrieben.
Structure, dehiscence and histochemistry of Pergularia daemia follicles With 28 Figures
Authors: Dave Y. , Kuriachen P. M. , Thomas V. 
Published: August 2010

AbstractThe gynoecium of Pergularia has bicarpellary, subapocarpous, superior ovary with ovules on marginal placenta. Ovary wall that transforms into fruit wall, can be differentiated histologically into epicarp, mesocarp and endocarp. The single layered epicarp is interrupted by stomata, trichomes and spines. Mesocarp consists of three zones: outer, middle and inner. Air chamber develops in the pericarp due to the disintegration of middle mesocarpic cells of the mature fruit. Endocarp is two layered and fibrous appearing in surface view as parquetry pattern. Dehiscence of the follicle is marginicidal. The major metabolites like starch, protein, lipid and the enzymes peroxidase, cytochrome oxidase and acid phosphotase are localized in the pericarp tissue.
Leaf anatomical studies and its bearing on the taxonomy of the tribe Aristideae (Poaceae) from Nigeria With 6 Figures and one Table
Authors: Gill L. S. , Mensah J. K. 
Published: August 2010

AbstractLeaf anatomical features such as the presence or absence of keel, bands of bulliform cells, sclerenchyma tissues and epidermal morphology of six species of Aristida, namely: A. adscensionis, A. cumingiana, A. hordeacea A. kerstingii, A. recta and A. siebariana from Nigeria have been investigated here for the first time. A taxonomic key on the basis of leaf anatomical and epidermal features is produced.
Isoelektrische Fokussierung der Untereinheiten der Rubisco in Thlaspi (Brassicaceae): Weitere Hinweise auf eine Formengattung Mit 2 Abbildungen und 3 Tabellen
Authors: Koch M. , Mummenhoff K. , Zunk K. 
Published: August 2010

AbstractDie Verwandtschaftsverhältnisse in der Gattung Thlaspi s. l. wurden mit Hilfe der isoelektrischen Fokussierung (IEF) der Untereinheiten von Ribulose‐1,5‐Bisphosphat Carboxylase/Oxygenase (Rubisco) untersucht. Unterschiede in den Rubisco‐IEF‐Bandenmustern von 25 Taxa ergaben eine Gliederung der Taxa in drei Gruppen, die mit den entsprechenden Gattungen Thlaspi s. str., Microthlaspi F. K. MEYER und Noccaea MOENCH von MEYER (1973, 1979) übereinstimmen. Lediglich T. bulbosum (Gattung Raparia sensu MEYER) konnte nicht als eigenständige Sippe charakterisiert werden. Innerhalb der Gattung Noccaea, die den Hauptteil der ehemals in Thlaspi s. l. zusammengefaßten Taxa umfaßt, lassen sich Artengruppen mit unterschiedlichen Rubisco‐IEF‐Bandenmustern abtrennen, die sich in ihren Verbreitungsgebieten voneinander abgrenzen. Amerikanische Vertreter der Gattung Thlaspi s. l., die hier zum ersten Mal in eine umfassende Analyse mit einbezogen wurden, sind nicht von westasiatischen Sippen zu unterscheiden. Es wird diskutiert, daß die Immigration von Thlaspi s. l. Sippen von Asien über die Beringbrücke nach Amerika erfolgte.
Early fruit drop in tree crops with special reference to rubber (Hevea brasiliensis) ‐ A review
Authors: Thomas V. , Amma C. K. Saraswathy , Sethuraj M. R. 
Published: August 2010

AbstractThe present article surveys the possible reasons for early fruit drop in tree crops with special reference to rubber. They are environmental, physiological, embryological or pathogenic. Abortion of pistillate flowers and fruit occurs generally in three distinct periods: due to under developed flowers, failure of pollination and embryo abortion due to embryological and physiological factors. Fruit set can be increased by hand pollination, use of growth hormones or by the application of fertilizers. The failure of seed production results in the loss of numerous potentially good cross combinations thus limiting the progress of genetic improvement of the species. Moreover seeds are the rich sources of genetic variability.
Die Wiederentdeckung Amerikas durch Christoph Columbus und die Einführung der Kartoffel in Europa Mit 4 Abbildungen
Authors: Fuchs‐Eckert H. P. 
Published: August 2010

AbstractDie Entdeckungsfahrten von Christoph Columbus nach der Neuen Welt zwischen 1492 und 1502 öffneten zwar die Möglichkeit zur Bereicherung der Palette der Kultur‐ und Nutzpflanzen der Alten Welt, doch gehörte dazu mit Sicherheit nicht Solanum tuberosum, unsere gewöhnliche Kartoffel. Die kartoffelähnliche, als Nahrungsmittel kultivierte Pflanze, die Columbus am 2. November 1492 auf Kuba bei der einheimischen Bevölkerung entdeckt hatte, war die Süßkartoffel, Ipomoea Batatas. Wann, und durch wen genau unsere gewöhnliche Kartoffel schließlich nach Europa gelangte, und wo sie erstmalig in Kultur genommen wurde, läßt sich heute kaum mehr mit Sicherheit nachweisen. Als gesichert darf andererseits angenommen werden, daß von der zweiten Hälfte des 16. Jahrhunderts bis in das 18. Jahrhundert unsere gewöhnliche Kartoffel meist lediglich als botanisches Kuriosum kultiviert und als Heilpflanze verwendet wurde. Eine weitere Verbreitung erreichte die gewöhnliche Kartoffel als wichtiger Bestandteil der menschlichen Ernährung erst im Zusammenhang mit Hungersnot im Gefolge des Siebenjährigen Krieges (1756–1763).
Vegetation analysis of some wadis in the Egyptian Mediterranean desert With 2 Figures and 3 Tables
Authors: Kamal S. A. , El‐Kady H. F. 
Published: August 2010

AbstractThe present study determines the variation in the phytosociological structure of wadi Washka and wadi Nethely in the western Mediterranean region of Egypt.Four vegetation groups were recognized in wadi Washka (A: Hammada scoparia‐Plantago albicans, B: Scorzonera alexandrina‐Hammada scoparia, C. Scorzonera alexandrina‐Launaea resedifolia, D: Suaeda pruinosa‐Salsola tetrandra) and five in wadi Nethely (I: Gymnocarpos decandrum‐Helianthemum stipulatum, II. Scorzonera alexandrina‐Plantago albicans, III: Arisarum vulgare‐Thymelaea hirsuta, IV: Anabasis oropediorum‐Scorzonera alexandrina, V: Salsola tetragona‐Pancratium maritimum). Two phytosociological groups were recognized in addition to those identified in the previous studies. The first is codominated by Anabasis oropediorum and Scorzonera alexandrina and characterizes the plateau of wadi Nethely and the second is codominated by Arisarum vulgare and Thymelaea hirsuta and characterize the lower position near the cultivated bed of the wadi. Among soil factors affecting the distribution of vegetation groups are moisture content, Clay, CaCO3%, Ca++ and K+.Nomenclature follows Täckholm (1974).
Ultramorphology of some boraginaceous taxa used as Ratanjot
Authors: Khatoon S. , Mehrotra S. , Bajpai V. K. , Mehrotra B. N. 
Published: August 2010

AbstractThe present study was undertaken with a view to determine some ultramorphological characters which could help in characterizing various boraginaceous taxa used as ‘Ratanjot’ in the traditional Indian system of medicine. Some of the distinguishing characters of the species studied are: broad two armed hair basis with triangular depression at the proximal end in Arnebia benthamii; the surface of upper epidermal cells tracheal shaped in A. euchroma; the hair bases saucer shaped with warty blobs in A. nobilis; the basal cells of large hairs digitally arranged in Maharanga emodi; and similarly these are arranged in cystolith‐like fashion in Onosma hispidum.
Carotenoids in certain species of lichen from tropical region
Authors: Czeczuga B. , Lim G. , Tan T. Koon , Streimann H. , Jenie U. A. , Gruezo W. Sm. 
Published: August 2010

AbstractColumn and thin‐layer chromatography revealed the presence of the following carotenoids in the thalli of 44 lichen species from tropical region Malaysia, Papua New Guinea, Indonesia and Philippines: α carotene, β‐carotene, β‐cryptoxanthin, lutein, 3′‐epilutein, zeaxanthin, lutein epoxide, antheraxanthin, hy‐droxyechinenone, canthaxanthin, astaxanthin, violaxanthin, neoxanthin, mutatoxanthin, rhodoxanthin, capsochrome, apo‐6′‐lycopenal, β‐citraurin and apo‐12′‐violaxanthal.The total content of carotenoids ranged from 20.76 (Cladonia froticulosa) to 101.32 μg g−1 dry wt (Parmotrema chinense).
Study on some species subsumed under Chenopodium Probstii A. and on C. purpurascens B. DE JUSS. ex JACQ
Authors: Dvořák F. 
Published: August 2010

AbstractUnder the name C. Probstii A., Verh. naturf. Ges. Basel 41, p. 83, 1931 A. connected taxa: C. Spegazzinii D., C. fallax (A.) D., C. pseudostriatum (ZSCHACKE) j. MURR, C. Probstii A., C. diversifolium (A.) D. and taxa with cymose inflorescences: C. pedunculare BERTOL., C. praeacutum J. MURR. C. purpurascens B. DE JUSS. ex JACQ. are really native in the south‐eastern Asia.
Zwei neue tertiäre Hölzer der Gattung Pinoxylon KNOWLTON emend. READ aus dem Versteinerten Wald von Lesbos, Griechenland
Authors: Süss H. , Velitzelos E. 
Published: August 2010

AbstractAus dem Versteinerten Wald von Lesbos (Griechenland) werden zwei oberoligozäne bis untermiozäne Protopinaceae‐Arten, Pinoxylon paradoxum sp. nov. und P. pseudoparadoxum sp. nov., beschrieben. Die auffälligsten Merkmale beider Arten sind die bei Koniferen bisher unbekannten großen einreihigen Holzstrahlen und die Änderungen der Zellgrößen innerhalb einer Zuwachsperiode. Der Versteinerte Wald, die Holzstrahlen, die Größenänderungen von Tracheiden und Holzstrahlen innerhalb einer Zuwachsperiode, das Vorkommen von Tracheidensträngen im Holz der Koniferen und die Bedeutung der Struktur der Zuwachszonen für die Rekonstruktion der damaligen Wachstumsbedingungen im Paläoökosystem „Versteinerter Wald”︁ werden in gesonderten Kapiteln behandelt.Two upperoligocene to lowermiocene Protopinaceae species from the petrified forest of Lesbos (Greece) are described as Pinoxylon paradoxum sp. nov. and P. pseudoparadoxum sp. nov. The more striking features of the two species are the big uniseriate rays and the variations in cell dimensions within one growth period, hitherto unknown in conifers. The petrified forest, the rays, the variations in dimension of tracheids and rays within one growth period, the presence of tracheid strands in coniferous woods, and the significance of the structure of growth periods for the reconstruction of growth conditions at that time in the system of paleoecology of the ‘petrified forest’ are described in separate chapters.