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    Wyświetlanie 1-15 z 15
    Tytuł:
    A mysterious giant ichthyosaur from the lowermost Jurassic of Wales
    Autorzy:
    Martin, J.E.
    Vincent, P.
    Suan, G.
    Sharpe, T.
    Hodges, P.
    Williams, M.
    Howells, C.
    Fischer, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/23272.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    ichthyosaur
    deposit
    morphotype
    Jurassic
    Wales
    Opis:
    Ichthyosaurs rapidly diversified and colonised a wide range of ecological niches during the Early and Middle Triassic period, but experienced a major decline in diversity near the end of the Triassic. Timing and causes of this demise and the subsequent rapid radiation of the diverse, but less disparate, parvipelvian ichthyosaurs are still unknown, notably because of inadequate sampling in strata of latest Triassic age. Here, we describe an exceptionally large radius from Lower Jurassic deposits at Penarth near Cardiff, south Wales (UK) the morphology of which places it within the giant Triassic shastasaurids. A tentative total body size estimate, based on a regression analysis of various complete ichthyosaur skeletons, yields a value of 12-15 m. The specimen is substantially younger than any previously reported last known occurrences of shastasaurids and implies a Lazarus range in the lowermost Jurassic for this ichthyosaur morphotype.
    Źródło:
    Acta Palaeontologica Polonica; 2015, 60, 4
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Two new morphotypes of Pinus eldarica: Discrimination by macromorphological and anatomical traits
    Autorzy:
    Shayanmehr, F
    Jalali, S.G.
    Ghanati, F.
    Kartoolinejad, D.
    Apple, M.E.
    Powiązania:
    https://bibliotekanauki.pl/articles/41605.pdf
    Data publikacji:
    2009
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    Mondell pine
    Pinus eldarica
    morphotype
    new morphotype
    anatomy
    statistical analysis
    Iran
    anatomical differentiation
    morphological differentiation
    morphometry
    needle
    Opis:
    Pinus eldarica has been introduced to Iran from more than 800 years ago. Some individuals of this pine have altered both in shape and growth rate in northeastern of Iran, and generated two distinct morphotypes which are called Conical-shaped and Ball-shaped pines. This study was conducted to discriminate these morphotypes using macromorphological and anatomical characteristics. Results of macromorphological analysis showed significant differences both with univariate and multivariate analysis and consequently two new morphotypes were clearly separated from Mondell pine individuals. Furthermore, anatomical differences observed in Conical-shaped pine in comparison with two other pines, from some valuable taxonomical point of view traits such as cross-section form of needle, number of stomata per area, number and position of resin ducts etc. Furthermore, the existent difference in traits like cuticle thickness, stomata density, needle perimeter and length, state increasing the adaptation potential to aridity in Conical-shaped pine in comparison with two others. The differences of two new morphotypes demonstrate that they are new variants of Mondell pine and it is need to be used molecular markers and phylogenic studies for specifying the cause of these morphological and anatomical differences.
    Źródło:
    Dendrobiology; 2009, 61; 27-36
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Morphotype variation of orthophragminids as a palaeoecological indicator: A case study of Bartonian limestones, Pod Capkami Quarry, Tatra Mts, Poland
    Autorzy:
    Machaniec, E.
    Jach, R.
    Gradziński, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/191441.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Geologiczne
    Tematy:
    Larger benthic foraminifera
    orthophragminids
    morphotype
    transgression
    palaeoenvironment
    Eocene
    Tatra Mts.
    Western Carpathians
    Opis:
    Nummulites-Discocyclina bioclastic packstone and Discocyclina rudstone occur in the transgressive sequence of the Middle–Upper Eocene deposits in the Tatra Mts. The succession of the studied facies is a direct response to a rapid environmental change, related to progressive deepening. Facies transition from Nummulites- Discocyclina bioclastic packstone of proximal mid-ramp to Discocylina rudstone of distal mid- and outer-ramp is an exemplary record of a deposition during deepening conditions. Increasing of diversity of the genus Discocyclina, decreasing of diversity of other foraminifera up the section and vertical variation of orthophragminid mor- photypes from the ovate- through saddle- to the disc-shaped tests are related to deepening and shadowing of the depositional environment.
    Źródło:
    Annales Societatis Geologorum Poloniae; 2011, 81, No 2; 199-205
    0208-9068
    Pojawia się w:
    Annales Societatis Geologorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    New sauropod trackways from the Middle Jurassic of Portugal
    Autorzy:
    Santos, V F
    Moratalla, J.J.
    Royo-Torres, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/22749.pdf
    Data publikacji:
    2009
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    new sauropod
    sauropod
    paleontology
    trackway
    Middle Jurassic
    Jurassic
    Portugal
    Dinosauria
    Sauropoda
    morphotype
    Opis:
    The Galinha tracksite reveals a sequence of Bajocian–Bathonian limestones belonging to the Serra de Aire Formation (West−Central Portugal) and is one of the few sites in the world where Middle Jurassic sauropod dinosaur tracks can be found. This tracksite is characterised by the presence of long, wide gauge sauropod trackways, the Middle Jurassic age of which suggests these dinosaurs were more widely distributed over time than previously thought. Two trackways contain unique pes and manus prints with morphologies that allow a new sauropod ichnotaxon to be described: Polyonyx gomesi igen. et isp. nov. On the basis of different manus/pes prints and trackway features, the proposal is made to subdivide Sauropodomorpha ichno−morphotypes into five groups: Tetrasauropus−like, Otozoum−like, Breviparopus/Parabrontopodus−like; Brontopodus−like, and Polyonyx−like. Polyonyx gomesi igen. et isp. nov. is thought to represent a nonneosauropod eusauropod, with a well developed manus digit I. The posterior orientation of this digit print suggests they were made by a eusauropod dinosaur with a posteriorly rotated pollex. The manus print morphologies observed in two trackways suggest a stage of manus structure intermediate between the primitive non−tubular sauropod manus and the tubular metacarpal arrangement characteristic of more derived sauropods. The low heteropody (manus:pes area ratio 1:2) of the trackway renders it possible they could have been made by eusauropods such as Turiasaurus riodevensis, which has a similar manus:pes area ratio. The Polyonyx igen. nov. trackway was made by non−neosauropod eusauropod, and suggests that wide gauge sauropod trackways were not exclusively made by Titanosauriformes.
    Źródło:
    Acta Palaeontologica Polonica; 2009, 54, 3; 409-422
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Palaeobiology, ecology, and distribution of stromatoporoid faunas in biostromes of the mid-Ludlow of Gotland, Sweden
    Autorzy:
    Sandstrom, O
    Kershaw, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/21659.pdf
    Data publikacji:
    2008
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    paleoecology
    deposit
    Sweden
    paleontology
    Silurian
    morphotype
    stromatoporoid fauna
    ecology
    distribution
    Gotland
    Opis:
    Six well exposed mid−Ludlow stromatoporoid−dominated reef biostromes in four localities from the Hemse Group in southeastern Gotland, Sweden comprise a stromatoporoid assemblage dominated by four species; Clathrodictyon mohicanum, “Stromatopora” bekkeri, Plectostroma scaniense, and Lophiostroma schmidtii. All biostromes investigated in this area (of approximately 30 km²) are interpreted to belong to a single faunal assemblage forming a dense accumulation of fossils that is probably the best exposed stromatoporoid−rich deposit of the Silurian. The results from this comprehensive study strengthen earlier interpretations of a combination of genetic and environmental control on growth−forms of the stromatoporoids. Growth styles are similar for stromatoporoids in all six biostromes. Differences in biostrome fabric are due to variations in the degree of disturbance by storms. The uniformity of facies and the widespread low−diversity fauna support the view that palaeoenvironmental conditions were similar across the area where these biostromes crop out, and promoted the extraordinary growth of stromatoporoids in this shallow shelf area.
    Źródło:
    Acta Palaeontologica Polonica; 2008, 53, 2
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mycorrhizal status of Pinus sylvestris L. nursery stock in Poland as influenced by nitrogen fertilization
    Autorzy:
    Rudawska, M.
    Leski, T.
    Gornowicz, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/41277.pdf
    Data publikacji:
    2001
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    forest ecosystem
    Polska
    nursery
    Pinus sylvestris
    nitrogen fertilization
    ectomycorrhizal fungi
    fungi
    morphotype
    Opis:
    Indigenous mycorrhizal colonisation of one (1/0) and two (2/0) year old Scots pine (Pinus sylvestris L.) seedlings from forest nurseries situated in the north-west part of Poland was investigated. Seedlings were fertilized after a schedule designed to satisfy their requirements which resulted from soil analysis of each nursery. In autumn needle nitrogen concentration and mycorrhizal status were estimated. As a rule seedlings 1/0 obtained high doses of fertilizers, and their needle nitrogen concentration highly exceeded the recommended optimal level above which mycorrhiza formation is greatly restricted. Highly negative correlation was found between the nitrogen status of foliage and mycorrhizal quantitative and qualitative colonisation estimated in the abundance class of 0-5. When internal nitrogen level was low, several ectomycorrhizal morphotypes were found on roots of tested plants. Excessive nitrogen fertilization decreased root ramification pattern and along with increased pH promoted ectendomycorrhizal symbiosis. Two-year-old seedlings (2/0) were characterised by significantly lower nitrogen concentration in the needles which resulted in much higher ectomycorrhizal colonisation. Ectendomycorrhizal symbiosis in the case of 2/0 seedlings was scarce. The results indicate that natural colonisation in nurseries is dependent on the soil management practices, especially nitrogen fertilization. Optimalization of nitrogen fertilization may intensify ectomycorrhizal colonisation of the nursery stock from indigenous fungal species and improve the growth of Scots pine seedlings in bare-root nurseries and plantations.
    Źródło:
    Dendrobiology; 2001, 46
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Apparatus of the conodont Scolopodus striatus Pander, 1856 and re-evaluation of Panders species of Scolopodus
    Autorzy:
    Tolmacheva, T Y
    Powiązania:
    https://bibliotekanauki.pl/articles/20625.pdf
    Data publikacji:
    2006
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    apparatus
    Conodonta
    Scolopodus striatus
    East Baltic
    Russia
    Ordovician
    conodont
    morphotype
    paleontology
    Estonia
    identification
    Opis:
    The Lower Ordovician conodont Scolopodus striatus Pander, 1856 (= Scolopodus rex Lindström, 1955) has an apparatus composed of five element morphotypes: acontiodiform, subrounded, compressed paltodiform, paltodiform, and scandodiform. The identification of the morphotypes is based on the general asymmetry of elements and shape of their bases. The elements are variable within each morphological group and form a continuous transition series generally reflected in differences in the depth of the basal cavity, height and degree of lateral compression of the base. The new collection from the localities near St. Petersburg, the type area of the first investigations on conodonts by Christian Pander in 1856, was examined and species of Scolopodus named by him are revised. All Pander’s species with the exception of the type species Scolopodus sublaevis are identified as a single species of Scolopodus that was named 99 years later as Scolopodus rex. The S. sublaevis sensu formae was not recognised in collections studied and its validity is questionable. S. striatus is the most easily recognisable among Pander’s species of Scolopodus and is here proposed to be a senior synonym of S. rex.
    Źródło:
    Acta Palaeontologica Polonica; 2006, 51, 2
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The impact of foliar application of biostimulators on the morphological characteristics of the leaf rosette of winter rape plants
    Wpływ dolistnego stosowania biostymulatorów na cechy morfologiczne rozety liściowej roślin rzepaku ozimego
    Autorzy:
    Sikorska, A.
    Gugała, M.
    Zarzecka, K.
    Domański, Ł.
    Powiązania:
    https://bibliotekanauki.pl/articles/13925485.pdf
    Data publikacji:
    2022
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Tematy:
    morphotype
    winter rape
    Brassica napus
    bioregulator
    active substance
    foliar application
    leaf rosette
    morphological characteristics
    Źródło:
    Agronomy Science; 2022, 77, 2; 5-14
    2544-4476
    2544-798X
    Pojawia się w:
    Agronomy Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Theropod teeth from the upper Maastrichtian Hell Creek Formation “Sue” Quarry: New morphotypes and faunal comparisons
    Autorzy:
    Gates, T.A.
    Zanno, L.E.
    Makovicky, P.J.
    Powiązania:
    https://bibliotekanauki.pl/articles/945614.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    paleontology
    theropod
    tooth
    Upper Maastrichtian
    Maastrichtian
    Hell Creek Formation
    morphotype
    Dinosauria
    morphometry
    paleoecology
    Cretaceous
    North America
    Opis:
    Isolated teeth from vertebrate microfossil localities often provide unique information on the biodiversity of ancient ecosystems that might otherwise remain unrecognized. Microfossil sampling is a particularly valuable tool for documenting taxa that are poorly represented in macrofossil surveys due to small body size, fragile skeletal structure, or relatively low ecosystem abundance. Because biodiversity patterns in the late Maastrichtian of North American are the primary data for a broad array of studies regarding non-avian dinosaur extinction in the terminal Cretaceous, intensive sampling on multiple scales is critical to understanding the nature of this event. We address theropod biodiversity in the Maastrichtian by examining teeth collected from the Hell Creek Formation locality that yielded FMNH PR 2081 (the Tyrannosaurus rex specimen “Sue”). Eight morphotypes (three previously undocumented) are identified in the sample, representing Tyrannosauridae, Dromaeosauridae, Troodontidae, and Avialae. Noticeably absent are teeth attributed to the morphotypes Richardoestesia and Paronychodon. Morphometric comparison to dromaeosaurid teeth from multiple Hell Creek and Lance formations microsites reveals two unique dromaeosaurid morphotypes bearing finer distal denticles than present on teeth of similar size, and also differences in crown shape in at least one of these. These findings suggest more dromaeosaurid taxa, and a higher Maastrichtian biodiversity, than previously appreciated.
    Źródło:
    Acta Palaeontologica Polonica; 2015, 60, 1; 131-139
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The identity of two morphotypes of Alella macrotrachelus (Brian, 1906) (Copepoda: Siphonostomatoida: Lernaeopodidae) from white seabream, Diplodus sargus (Actinopterygii: Sparidae)
    Autorzy:
    Piasecki, W.
    Kempter, J.
    Saraiva, A.
    Baptista, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/6306.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Parazytologiczne
    Tematy:
    morphotype
    Alella macrotrachelus
    Copepoda
    Siphonostomatoida
    Lernaeopodidae
    white sea bream
    sea bream
    Diplodus sargus
    Actinopterygii
    Sparidae
    parasitology
    Źródło:
    Annals of Parasitology; 2016, 62, Suppl.
    0043-5163
    Pojawia się w:
    Annals of Parasitology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    3D Garment Modelling – Conception of Its Structure in 3D
    Trójwymiarowe modelowanie odzieży– koncepcja struktury odzieży w 3D
    Autorzy:
    Cichocka, A.
    Bruniaux, P.
    Frydrych, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/231536.pdf
    Data publikacji:
    2016
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
    Tematy:
    3D garment modelling
    virtual garment
    morphotype
    modelowanie odzieży
    struktura odzieży w 3D
    morfotyp
    Opis:
    This work presents the results of our approach in the field of modelling and numerical simulation of a garment in a 3D virtual environment. In our study we take into account the strategic point of approach where the numerical avatar model integrates the garment model by association without difficulty. On the other hand the flattening of 2D and 3D garment patterns need to be associative, accurate and impose the existing fabric deformation linked with a garment drape. The results mentioned in our previous paper showed that the adaptive mannequin morphotype model follows the human body morphology from the scanner, although large deformations were imposed to the initial human body during the creation process presented. This model is dedicated to the ready-to-wear garment sectors except for garments very close-fitting to the body (ease allowance value = 0 or negative) such as corsetry, because in this particular case it is necessary to consider the evolution of the chest for women. Moreover the concept of design offered is of sufficient interest to follow the results of the measurement. With this adaptive mannequin morphotype model, we will describe the study on the development of garment models in a 3D environment.
    W pracy przedstawiono wyniki naszych rozważań związanych z projektowaniem, modelowaniem i symulacją numeryczną odzieży w 3D przestrzeni wirtualnej. Strategicznym dla tych badań jest sposób integracji modelu ciała człowieka i modelu odzieży, które winny współdziałać w sposób bezkolizyjny. Jednocześnie poziom „współpracy” obu modeli winien być zapewniony tak, aby proces tworzenia i modelowania form odzieży związany z działaniami na płaszczyźnie jak i w trójwymiarze gwarantował ich spójność, dokładność, a także uwzględniał „zachowanie się materiału” w noszonej odzieży. Wyniki badań, prezentowane we wcześniejszej publikacji, związane z projektowaniem naszego parametrycznego manekina pokazują iż model manekina parametrycznego, mimo zaimplementowanych w procesie projektowania znacznych przekształceń, pozostaje zgodny z pierwotnym modelem ciała człowieka uzyskanym w wyniku skanowania. Proponowana koncepcja projektowania odzieży z w/w manekinem parametrycznym wydaje się właściwą dla sektora odzieży oferowanej przez sieci handlowe, za wyjątkiem odzieży bardzo dopasowanej (luzy odzieżowe równe zero lub ujemne) jak wyroby gorseciarskie, ponieważ w tym szczególnym przypadku należałoby uwzględnić również różnorodność kobiecego biustu. Co więcej, stwarza ona również kolejną, potencjalną możliwość wykorzystania wyników kampanii pomiarowych populacji.
    Źródło:
    Fibres & Textiles in Eastern Europe; 2016, 4 (118); 121-128
    1230-3666
    2300-7354
    Pojawia się w:
    Fibres & Textiles in Eastern Europe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Chrysophycean stomatocysts from Morskie Oko and Zabie Oko Lakes in the Tatra National Park, Poland
    Autorzy:
    Cabala, J
    Powiązania:
    https://bibliotekanauki.pl/articles/57814.pdf
    Data publikacji:
    2005
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    chrysophyte
    alga
    Tatras Mountains
    Lake Zabie Oko
    water reservoir
    Polska
    Tatra National Park
    stomatocyst
    new morphotype
    Lake Morskie Oko
    Opis:
    Sixteen chrysophycean stomatocysts are reported from the lakes Morskie Oko and Żabie Oko in the Tatra National Park, Poland. Of these, six morphotypes are new to Poland, and two morphotypes plus one forma are new to science. These stomatocysts are illustrated with SEM micrographs and described according to International Statospore Working Group (ISWG) guidelines. The comparison of stomatocyst community between Morskie Oko and Żabie Oko lakes is given.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2005, 74, 4
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Equisetum telmateia Ehrh. morphotypes related to anthropogenic habitats
    Autorzy:
    Wrobel, D
    Powiązania:
    https://bibliotekanauki.pl/articles/58384.pdf
    Data publikacji:
    2003
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    anthropogenic habitat
    phenotypic variation
    Polska
    biotope
    Alno-Padion
    Equisetum telmateia
    sporophyte
    growth regulator
    Calthion
    Europe
    morphotype
    distribution
    Giant Horsetail
    Opis:
    The Giant Horsetail (Equisetum telmateia) is the only representative of Equisetum genus included in the list of strictly protected species. In Central and Western Europe the species is found in communities belonging to alliances: Alno-Padion and Calthion. With progressing destruction of these biotopes, one can observe the phenomenon of this species moving to the habitats extremely anthropogenic in character. Frequent and intensive observations of this phenomenon were conducted in the Jasło - Krosno Dale area in southern Poland in three anthropogenic localities. In these localities three interesting, irregular Equisetum telmateia morphotypes were found: fo. serotinum subfo. proliferum, fo. spiralis and a morphotype with branched shoot. The phenomenon of morphological plasticity of sporophytes is thought to be connected with the action of genes, which regulate the identity of developing plant organs and their distribution. These genes perform a superior part in relation to the system of growth regulators.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2003, 72, 2
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Incidence of seed-borne fungi on Lupinus mutabilis depending on a plant morphotype, sowing date and plant density
    Autorzy:
    Pszczolkowska, A.
    Okorski, A.
    Kotecki, A.
    Gas, M.
    Kulik, T.
    Reczek, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/961386.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
    Tematy:
    seed-borne fungi
    Lupinus mutabilis
    plant
    seed health
    seed yield
    Andean lupin
    macronutrient
    morphotype
    sowing date
    plant density
    Colletotrichum
    identification
    Opis:
    Seeds of the Andean lupine are characterised by high nutritional value, and the plant could become an important crop in the production of food and forage. This legume continues to attract growing interest around the world. A field experiment was carried out in in Lower Silesia, Poland, in 2011-2012. Two Andean lupine morphotypes (indeterminate and determinate) were analysed. Andean lupine was grown in treatments characterised by different sowing dates and plant density per m2. Seed yield, macronutrient content, protein content and health were evaluated at harvest. Seed yield was determined by the interaction of all experimental factors. The indeterminate form produced a significantly higher yield than the determinate form, regardless of the sowing date. The factors had little influence on the mineral content of seeds and total protein content. Andean lupine seeds were colonised mostly by saprotrophic fungi of the genera Alternaria, Cladosporium, Epicoccum and Rhizopus and pathogenic fungi of the genera Botrytis, Colletotrichum and Fusarium. Delayed sowing contributed to seed colonisation by fungi of the genus Colletotrichum. The determinate form was more susceptible to infection than the indeterminate form. Molecular analysis showed that the Colletotrichum isolates found in the study belong to the Colletotrichum acutatum species complex. The pathogen causing lupine anthracnose, isolated from the seeds of Andean lupine in the present study, was identified as Colletotrichum lupini (within C. acutatum complex) in a molecular analysis, and its DNA sequence was compared with those of the isolates deposited in the GenBank.
    Źródło:
    Journal of Elementology; 2016, 21, 2
    1644-2296
    Pojawia się w:
    Journal of Elementology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Response of winter rapeseed to biostimulator application and sowing method. Part II. Seed yield components
    Reakcja rzepaku ozimego na stosowanie biostymulatorów oraz sposób siewu. Cz. II. Komponenty składowe plonu nasion
    Autorzy:
    Sikorska, Anna
    Gugala, Marek
    Zarzecka, Krystyna
    Powiązania:
    https://bibliotekanauki.pl/articles/2216803.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Bydgoska im. Jana i Jędrzeja Śniadeckich. Wydawnictwo PB
    Tematy:
    bioregulators
    Brasscia napus L.
    morphotype
    number of pods per plant
    number of seeds per pod
    pods length
    sowing methods
    number of productive tillers
    bioregulatory
    Brassica napus L.
    długość łuszczyn
    morfotyp
    liczba nasion w łuszczynie
    liczba rozgałęzień produktywnych
    sposoby siewu
    liczba łuszczyn na roślinie
    Opis:
    Background. The use of natural growth stimulants is becoming an increasingly common practice in agriculture. Biostimulants favourably affect the plant growth and development and increase the resistance of plants to the adverse effects of various stress factors. The aim of the study was to estimate the effect of types of the applied biostimulators and sowing methods on the number of productive tillers, the number of pods per plant, the length of pods and the number of seeds per pod in three cultivars of winter oilseed rape. Material and methods. A field experiment was carried out in 2013–2016 at the Agricultural Experimental Station in Zawady (52 o03' N; 22o 33' E) which belongs to the University of Natural Sciences and Humanities in Siedlce, Poland. The experiment was conducted in a split-split-plot design with three replications. The studied factors included: I – three cultivars of winter oilseed rape: Monolit (population cultivar), PR44D06 (restored hybrid cultivar with a semi-dwarf type of growth), PT205 (restored hybrid cultivar with a traditional type of growth); II – two sowing methods: row spacing of 22.5 cm (row sowing – sowing rate of 60 seeds per $1 m^2$), row spacing 45.0 cm (single seed sowing – sowing rate of 40 seeds per $1 m^2$); III – three types of applied biostimulants: control variant (without the application of biostimulants), biostimulant Tytanit®, biostimulant Asahi ®SL, biostimulant Silvit ®. Results. The present study showed a significant effect of the types of biostimulants used on the seed yield components. Sowing methods did not cause significant changes in the seed yield components, such as: the length of pods, the number of seeds per pod. Differences between the cultivars in the pod length were statistically insignificant. Diversified humidity and thermal conditions prevailing in the years of conducting the experiment significantly affected the seed yield components. Conclusion. Under the influence of the biostimulant Asahi SL, there was a significant increase in the number of productive tillers, the number of pods per plant, the length of pods, the number of seeds per pod compared to the control variant. In the wider row spacing there was a greater number of productive tillers and pods per plant. The long-stemmed cultivar PT205 compared to the semi-dwarf PR44D06 and the population Monolith formed more productive tillers and pods per plant, while the restored hybrids possessed significantly more seeds per pod compared to the traditional cultivar. The highest values of the examined characteristics were recorded in the growing season 2013-2014, distinguished by the best pluvio-thermal conditions during spring and summer oilseed rape development.
    Stosowanie naturalnych stymulatorów wzrostu staje się coraz powszechniejszą praktyką w rolnictwie. Biostymulatory wpływają korzystnie na wzrost i rozwój roślin oraz zwiększają odporność roślin na niekorzystne oddziaływanie różnych czynników stresowych. Celem przeprowadzonych badań było określenie wpływu rodzajów stosowanych biostymulatorów oraz sposobów siewu na liczbę rozgałęzień produktywnych, liczbę łuszczyn na roślinie, długość łuszczyn oraz liczbę nasion w łuszczynie w trzech odmianach rzepaku ozimego. Doświadczenie polowe przeprowadzono w latach 2013–2016 w Rolniczej Stacji Doświadczalnej – Zawady (52 o 03' N; 22o33' E), należącej do Uniwersytetu Przyrodniczo-Humanistycznego w Siedlcach. Eksperyment przeprowadzono w układzie split-split-plot w trzech powtórzeniach. Badanymi czynnikami były: I – trzy odmiany rzepaku ozimego: Monolit (populacyjna), PR44D06 (mieszańcowa zrestorowana o półkarłowym typie wzrostu), PT205 (mieszańcowa zrestorowana o tradycyjnym typie wzrostu), II – dwa sposoby siewu: rozstawa 22,5 cm (siew rzędowy – gęstość siewu 60 nasion na $1 m^2$), rozstawa 45,0 cm (siew punktowy – gęstość siewu 40 nasion na $1 m^2$), III – trzy rodzaje stosowanych biostymulatorów: wariant kontrolny (bez stosowania biostymulatorów), biostymulator Tytanit ®, biostymulator Asahi ®SL, biostymulator Silvit ®. Badania własne wykazały istotny wpływ rodzajów stosowanych biostymulatorów na komponenty składowe plonu nasion. Sposoby siewu nie powodowały istotnych zmian w komponentach składowych plonu nasion, takich jak: długość łuszczyn, liczba nasion w łuszczynie. Różnice między odmianami w długości łuszczyn były statystycznie nieistotne. Zróżnicowane warunki wilgotnościowo-termiczne panujące w latach prowadzenia doświadczenia wpływały istotnie na komponenty składowe plonu nasion. Pod wpływem biostymulatora Asahi SL zanotowano istotne zwiększenie liczby rozgałęzień produktywnych, liczby łuszczyn na roślinie, długości łuszczyn, liczby nasion w łuszczynie w porównaniu do wariantu kontrolnego. W szerszej rozstawie międzyrzędzi zanotowano większą liczbę rozgałęzień produktywnych i łuszczyn na roślinie. Odmiana długołodygowa PT205 w porównaniu do półkarłowej PR44D06 i populacyjnej Monolit tworzyła więcej rozgałęzień produktywnych i łuszczyn na roślinie, mieszańce zrestorowane miały istotnie więcej nasion w łuszczynie w stosunku do odmiany tradycyjnej. Największe wartości badanych cech odnotowano w sezonie wegetacyjnym 2013–2014 wyróżniającym się najlepszymi warunkami pluwio-termalnymi podczas wiosenno-letniego rozwoju rzepaku.
    Źródło:
    Acta Scientiarum Polonorum. Agricultura; 2018, 17, 4; 215-223
    1644-0625
    Pojawia się w:
    Acta Scientiarum Polonorum. Agricultura
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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