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EN
Fraxinus angustifolia Vahl is a species native in the north-western Balkans, where it has a divided range. Most of its range is located in flood-prone riparian sites in the Pannonian plain but the species is also found on humid sites along some rivers in the Submediterranean region. We analysed morphologic variation within and between five populations (14 trees/population) located in the Subpannonian and Submediterranean region of Slovenia. Thirty two characters were assessed on ca. 80 leaves from each tree which were divided depending on exposure to sunlight (sun and shade leaves), and 8 traits on each fruit (ca. 50 fruits/tree). A hierarchically designed experiment using analysis of variance confirmed the significant contribution of all the analysed hierarchical levels of variation to the total variation. The results show that the differences between the trees in a single population are the greatest factor of variability of leaves, followed by differences between populations and differences which are the result of variation in exposure to sunlight. Leaves in shade positions are typically larger than those in sunny positions, and they have broader and shorter-pointed leaflets; in this feature they are very similar to the leaves of F. excelsior. Stepwise discriminant analysis showed that the traits which refer to the leaflet number and length are the best differentiating traits between individual populations. The Submediterranean population Dragonja stands out with the smallest leaves and the population Lijak from the same region is the most similar to Dragonja for most morphological traits. In general, phenotypic differences between the Subpannonian and the Submediterranean populations of F. angustifolia are minor and indistinct. Based on the differences ascertained by the study, we can only confirm the presence of F. angustifolia subsp. oxycarpa (Bieb. ex Willd.) Franco et Rocha Alfonso in this part of its natural range.
EN
Microstructure of malting barley kernels is one of the most significance factor of malt quality and is determined using simple evaluation of vitreous or mealy areas. The object of investigation was to verify the hypothesis, that the colour of endosperm of malting barley kernels depends of variety. The investigated materials were grains of 13 varieties of malting barley. The similarity of varieties was estimated by the electrophoresis of hordeins. The colour was measured using DIA system LUCIA G. It was found, that only the varieties for which the hordein image differed most (Maresi, Sezam, Granal) also differed in terms of the endosperm colour. The differences were statistically significant at p = 0.05. In majority of investigated varieties the endosperm colour was not specific variety feature, however, they are distinguished by hordein electrophoresis.
PL
Mikrostruktura ziarniaków jęczmienia browarnego jest jedną z ważnych cech jakości słodu. Najczęściej oznacza się ją jako występowanie obszarów szklistych lub mączystych bielma. Celem badań było zweryfikowanie hipotezy, czy barwa bielma jęczmienia browarnego jest cechą odmianową. Badano 13 odmian jęczmienia browarnego o różnej jakości słodowniczej. Podobieństwo odmianowe określano na podstawie elektroforetycznego rozdziału hordein. Barwę oznaczano, stosując wizyjną analizę obrazu – system LUCIA G. Stwierdzono, że tylko odmiany o wyraźnie różniącym się rozdziale elektroforetycznym hordein (Maresi, Sezam, Granal) różniły się również barwą bielma. Różnice były istotne statystycznie dla p = 0,05. Barwa bielma pozostałych badanych odmian, mimo różnic w obrazie elektroforetycznym, nie wykazywała różnic istotnych statystycznie.
EN
The needles of 17 samples representing 15 populations of Pinus mugo Turra from the Alps, Apennines, Sudethians, Carpathians and Rhodopes were analysed in respect to 15 morphological and anatomical characters. The results of measurements were analysed statistically. The variation of the samples was generally not to large. Populations from the East Carpathians appeared different from all other examined. Two formed groups of analysed populations are separated mainly by thickness of epidermal cells, width/thickness of epidermal cell ratio, needle width and needle thickness. The differences between two groups of populations suggest their longer separation during Pleistocene.
EN
The characteristic of Pinus uncinata on the basis of biometrical analyses of 16 cone features was done. The research was based on 8 samples representing 6 populations, consisting of 50 cones each, collected in the Pyrenees, within the natural range of the species. All the investigated cone features were moderately differentiated, with the variation coefficient ranging from 8 to 30%. The particular populations differ significantly from each other statistically according to several features examined. The samples collected in the same population also vary significantly. The differences between populations, however, do not enable their division into groups, which supports their origination from the same Pleistocene refugia.
EN
When growing wheat, one of the non-chemical methods of weed regulation is to choose wheat varieties which have a high ability to compete with weeds. The first aim of the research was the estimation of the relationships between the morphological features and canopy parameters of six spring wheat varieties. The second aim was the estimation of the varieties’ competitive ability against weeds. The third aim was the estimation of the grain yield of the six varieties. The experiment was carried out in the 2011–2013 time period, on fields which had been organically managed since 1994. Different features affected the weed infestation levels of the spring wheat varieties. For Bombona, negative correlations between the number of weeds and the height, dry matter of wheat, and wheat density, were proved. For Brawura, Hewilla, and Żura, the height, number of tillers, and dry matter of wheat were the main factors influencing weed abundance. A strong negative correlation between the number of weeds and the dry matter of wheat was found for Parabola. Cluster analysis indicated that Bombona and Brawura were the most competitive against weeds, while Monsun and Parabola were characterized as being the least competitive against weeds. Weed number significantly affected the grain yield of spring wheat (r = –0.418). The grain yield was positively correlated with the number of tillers (r = 0.459) and ears (r = 0.355), and the height (r = 0.534) and wheat dry matter (r = 0.411). Bombona and Brawura were the lowest yielding varieties (3.03 and 3.20 t ∙ ha–1, respectively), whereas the highest yield was achieved by Żura (3.82 t ∙ ha–1, on average).
EN
The paper uses statistical methods to examine whether origination from different Pleistocene centers influences the present-day variation of Carpinus betulus in Poland. Twenty-nine populations of the species were sampled in communities of the Carpinion betuli alliance in most of the country. Samples of 100 involucres for each population were analyzed for 26 morphological characters. Despite the rather accidental similarities among the sampled populations, their geographic variation confirmed their origin from at least two different refugia, southeast and west.
EN
The previous of our research showed that the endosperm colour of 13 varieties depends of differences in similarity of hordeins. The endosperm colour is not specific for varieties of high similarities of hordeins. Do changes in microstructure of endosperm as a result of 24 hours germinating and heating increase the differences of colour amongst varieties which are more similar in hordeins electrophoregrams. The endosperm colour of 13 varieties was measured using DIA System LUCIA G. It was proved that germinating and heating significant differences in colour of endosperm of some varieties with highly similar hordeins. It suggests the possibility of evaluating the variety uniformity of malting barley batch, as well as predicting the malting quality of grains using evaluation of endosperm colour after one day germinating and heating of grains.
PL
W zamieszczonych w części I pracy badaniach wykazano, że barwa bielma 13 odmian jęczmienia browarnego zależy od różnic w podobieństwie hordein. Barwa bielma nie jest zatem specyficzna dla odmian o dużym podobieństwie hordein. Celem badań było zweryfikowanie hipotezy, czy zmiany w mikrostrukturze bielma, spowodowane 24 godz. kiełkowaniem, a następnie ogrzewaniem, mogą zwiększyć różnice w barwie odmian o dużym podobieństwie hordein. Barwę oznaczano, stosując wizyjną analizę obrazu system LUCIA G. Wykazano, że kiełkowanie i ogrzewanie wyraźnie zwiększa różnice w barwie bielma niektórych odmian. Sugeruje to możliwość wstępnej oceny jednolitości odmianowej jęczmienia browarnego, a także przewidywanie jakości słodowniczej, z zastosowaniem pomiaru barwy bielma, po 1-dniowym kiełkowaniu i ogrzewaniu.
EN
A total of 124 recent winter wheat accessions of European origin were screened for coleoptile length and plant height. Most of the accessions (74.2%) possessed a coleoptile length ranging between 5.00 and 7.00 cm. The German varieties Ebi, Pegassos, Flair without Rht genes had a coleoptile length of 9.08, 9.43, 9.56 cm and a plant height of 97, 95 and 98 cm, respectively. The Serbian variety Pobeda possessing Rht8 had a coleoptile length of 9.14 cm and a plant height of 71 cm. The varieties possessing Rht-B1b, Rht-D1b had a significantly shorter mean coleoptile length (5.45 cm) and mean plant height (84.5 cm) than the varieties without Rht genes (7.41 and 99.6 cm). The correlation between coleoptile length and plant height was medium (r = 0.613, p < 0.01) when the calculation excluded the varieties from Central and Southern Europe. The similar plant height, but not coleoptile length of the varieties possessing different dwarfing factors enables development of novel varieties with desirable height and coleoptile length from the European winter wheat germplasm.
EN
This paper presents the results of the study on morphological differentiation of seeds of five Polish species of the genus Sorbus L. (S. aria (L.) Crantz, S. aucuparia L. Emend. Hedl., S. chamaemespilus (L.) Crantz, S. intermedia (Ehrh.) Pers. and S. torminalis (L.) Crantz). The biometric data of 1980 seeds were subjected to multivariate statistical analysis in attempt to define intraspecific variation and to find differences between studied taxa. Most of the seed traits are significantly correlated and are characterised by moderate level of variation. Seeds of S. aucuparia (both subspecies) are the least variable while seeds of S. torminalis and S. intermedia the most. On the basis of size and shape traits of Sorbus seeds only seeds of S. aucuparia can be definitely distinguished from the others.
EN
Two year-old needles of Pinus sylvestris were collected from 32 individuals in the Sierra de Baza (Spain). The needles were analysed in respect to 15 morphological and anatomical characters. Data obtained were subject of multivariate statistical analyses. The most stable characters appear to be needle thickness/ width ratio, thickness and width of epidermal cells. The most variable characters include the distance between vascular bundles and Marcet's coefficient. Intrapopulational variation is low.
EN
The results of the study on morphological variation of fruits and seeds of a rare forest tree species Sorbus torminalis (L.) Crantz in Poland are presented and discussed. The ripe fruits were collected from 13 localities widespread within the range of the species. Fruits and seeds were measured according to 13 morphological traits. The biometric data were subjected to multivariate statistical analysis in attempt to define intra and inter populational variation. Most of the fruit and seed traits are significantly correlated and are characterized by moderate level of variation. Traits describing size and shape are higher variable in seeds than in fruits. High level of variation within examined populations was ascertained. The average among population component of variation was only 23.99%. Though the differences between sampled populations are significant, almost no geographical pattern of this differentiation was detected. The biological significance of some of fruit and seed features is discussed in the paper. Examining the collected material a single fruits with 5–6 seeds were found what suggests the presence of three carpels in gynoeceum, a number not previously reported in the species.
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