1,745 research outputs found
The complete chloroplast genome sequence of Styrax chinensis Hu et S.Y. Liang (Styracaceae)
No full textStyrax chinensis Hu et S.Y. Liang, is one of the few evergreen species of Styracaceae with fragrant flowers. Here, we characterized the complete chloroplast (cp) genome of S. chinensis using next-generation sequencing. The circular complete cp genome of S. chinensis is 158,502 bp in length, containing a large single-copy (LSC) region of 87,817 bp, and a small single-copy (SSC) region of 18,001 bp. It comprises 132 genes, including 8 rRNA genes, 37 tRNAs genes, and 87 protein-coding genes. The GC content of S. chinensis cp genome is 36.93%. The phylogenetic analysis suggests that S. chinensis is a sister species to Styrax suberifolius in Styracaceae
Fruit, seed and seedling variability of Paulownia elongata S.Y. Hu test tree in Belgrade
No full textU radu su prezentovani rezultati istraživanja svojstava i varijabilnosti plodova, semena i klijavaca test stabala vrste Paulownia elongata S.Y. Hu sa područja grada Beograda. Dobijeni rezultati ukazuju na značajan adaptivni potencijal stabala 1 i 5, na ovom nivou istraživanja, koji može poslužiti kao osnova za masovnu proizvodnju sadnica ove vrste. .Paulownia is a deciduous species originally from China. It has a strong root system, dark-grimly bark, branchy-aerial crown with strong lateral branches, large leaves and attractive, blue-violet to white, bell-looking flowers. The most important characteristic of this species is its very intensive growth, and this species is one of the fastest growing tree species in the world. In urban environment, Paulownia is used as park or wood engraving tree, with its decorative traits standing out. This species has large leaf surface and grained reverse leaf side, and because of these traits it is capable to absorb significant amounts of sulphurdioxide and to hold dust particles from the air. After China's opening up to the world, interest in this species has grown worldwide over the past decades. Planned introduction of this species into Serbia started in 1993 with a plant import as a new technology transfer and it was conducted with the aim of establishing a sample plot near Bela Crkva. Some of those plants and its offspring, Paulownia elongata S.Y. Hu species, grow in Belgrade, adapted to local environmental conditions. The conducted research shows different adaptive ness of the test trees as a consequence of its norm reaction. The research results show a significant potential of individuals 1 and 5, which has to be tested in the following years, and sustain ably used for species seedling mass production.
Primer reporte de Walterianella inscripta Jacoby (Coleoptera: Chrysomelidae) defoliando árboles de Paulownia elongata S.Y. Hu en Costa Rica
Full text linkWe found Walterianella inscripta Jacoby (Coleoptera: Chrysomelidae), causing damage to foliage of Paulownia elongata S.Y. Hu trees in San Carlos, Pital, Costa Rica. W. inscripta causes scratches and holes measuring between 0.1 and 0.07 cm2 in foliage. We observed a great incidence of defoliation damage affecting all trees, with a severity that in most cases affected over 75% of tree foliage. This is the first report of the damage of W. inscripta in P. elongata in Costa Rica.Se encontraron individuos de Walterianella inscripta Jacoby (Coleoptera: Chrysomelidae), causando daño al follaje de árboles de Paulownia elongata S.Y. Hu en San Carlos, Pital, Costa Rica. W. inscripta causa rasguños y agujeros que miden entre 0.1 y 0.07 cm2 en el follaje. Observamos una gran incidencia de daño por defoliación que afecta a todos los árboles, con una severidad que en la mayoría de los casos afectó a más del 75% del follaje arbóreo. Este es el primer informe del daño de W. inscripta en P. elongata en Costa Rica
Organic production systems in Northern highbush blueberries
No full textThe production of highbush blueberries is increasing worldwide. Organic production of blueberries in Sweden is presently very limited but is expected to have a great potential to expand as the berries are popular and have a good shelf life. The fact that blueberries require acid soils raises several questions concerning suitable substrates in combination with mycorrhizal inoculation and fertilization in organic production systems. Field and pot experiments have been established during 2011 and 2012 with the aim of developing a sustainable production system for high quality organic blueberries. After the second experimental year, total fruit yields were similar for plants grown in a plastic tunnel and in the open field. Yields were not affected by the addition of 10% forest soil to the peat-based substrate. Inoculation with ericoid mycorrhizal fungi had little effect on shoot length in a greenhouse pot experiment. Blueberries may be particularly suitable for organic production as the need for fertilizers is low combined with a relatively low disease pressure on the blueberry crop in the Nordic countries. The Swedish blueberry production might be expected to expand in the near future. The development of a successful and resource-efficient growing system for organic blueberries may encourage new blueberry growers to chose organic production
Synthesis and electrical conductivity of mullitetype Bi2Al4O9 and (Bi,Ca)2Al4O9 ceramics
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