Plant, Soil and Environment, 2010 (vol. 56), issue 12
Index of volume 56Index
editors
Plant Soil Environ., 2010, 56(12):I-VI | DOI: 10.17221/1637-PSE 
Physiological response of Monimopetalum chinense to light stress under habitat fragmentation
C.Y. Hao, R. Fan, H.S. Wu, X.P. Zhang, L. Wang, W.L. Chen, Z.L. Chen
Plant Soil Environ., 2010, 56(12):551-556 | DOI: 10.17221/41/2009-PSE
To determine the effect of light stress under fragmental habitat on the physiology, this paper investigated the physiological responses of Monimopetalum chinense with different light intensities in the Xianyu Mountains (Anhui, China). The study showed that both weak and intense light brought about by habitat fragmentation could improve antioxidant enzymes activities, and promote electrical conductivity and malondialdehyde content of M. chinense leaves. However, too strong light could inhibit photosynthesis rates, superoxide dismutase, catalase, and ascorbate peroxidase activities. In addition, the characteristics of leaves were affected...
Assessment of surface and injection fertilization on various grass hybrids in grass-clover mixture
O. Kozlovský, J. Balík, J. Černý, M. Kulhánek, J. Hakl, A. Kohoutek
Plant Soil Environ., 2010, 56(12):557-563 | DOI: 10.17221/174/2010-PSE
In a small-plot trial, grass hybrids Perseus (loloid) and Felina (festucoid) were compared in a mixture with red clover (Trifolium pratense L.) and their reactions to surface application of nitrogen fertilizers or injection into soil according to CULTAN method were investigated. Both fertilizer application methods were used with three levels of nitrogen. Mixtures containing the Felina hybrid had higher yields (12.1 t/ha) compared to the Perseus hybrid (11.0 t/ha), and they also showed higher clover abundance. Increasing dosage of nitrogen resulted in slightly higher yield, whereas the trend in clover abundance was opposite. Nitrogen injection...
The effect of time of cutting on yield and the quality of the hop hybrid varieties Harmonie, Rubín and Agnus
K. Krofta, J. Ježek
Plant Soil Environ., 2010, 56(12):564-569 | DOI: 10.17221/187/2010-PSE
The influence of mechanized cutting time on the yield and quality of hops was studied for three years (2007, 2008 and 2009) in three Czech hybrid varieties Harmonie, Rubín and Agnus. The cutting term classified as 'early' was carried out at the turn of March and April. Further cutting dates were made at intervals of 7-10 days and they were classified as 'middle' and 'late' ones. Yield and contents of alpha acids were evaluated during the machine harvest. The measured data revealed no statistical relationship between term of cutting, alpha acid content and yield in any of the tested cultivars. However, during the experimental period considerable inter-annual...
Growth response of wheat cultivars to bacterial inoculation in calcareous soil
D. Egamberdieva
Plant Soil Environ., 2010, 56(12):570-573 | DOI: 10.17221/75/2010-PSE
In this study the plant growth-promoting bacteria were analysed for their growth-stimulating effects on two wheat cultivars. The investigations were carried out in pot experiments using calcareous soil. The results showed that bacterial strains Pseudomonas spp. NUU1 and P. fluorescens NUU2 were able to colonize the rhizosphere of both wheat cultivars. Their plant growth-stimulating abilities were affected by wheat cultivars. The bacterial strains Pseudomonas sp. NUU1 and P. fluorescens NUU2 significantly stimulated the shoot and root length and dry weight of wheat cv. Turon, whereas cv. Residence...
Effect of nitrogen fertilization on metabolisms of essential and non-essential amino acids in field-grown grain maize (Zea mays L.)
T. Lošák, J. Hlušek, R. Filipčík, L. Pospíšilová, J. Maňásek, K. Prokeš, F. Buňka, S. Kráčmar, A. Martensson, F. Orosz
Plant Soil Environ., 2010, 56(12):574-579 | DOI: 10.17221/288/2010-PSE
In two-year field experiments, nitrogen (N) in the form of urea (0, 120 and 240 kg N/ha) was applied to grain maize (Zea mays L.) hybrid KWS 2376. The two-year mean content of total grain N at harvest was 1.54%. The highest N dose reduced most of the 17 amino acids (AA) analysed in the grain compared with the other treatments. Possible reasons for this could be an adverse effect on the tricarboxylic acid cycle or deficiency of carbon skeletons for the assimilation of NH4+ into amides and amino acids. The content of the limiting amino acid lysine was not influenced by N fertilisation, with a mean two-year content of 2.02...
Effect of desiccation temperature on viability of immature dandelion (Taraxacum agg.) seeds dried in mowed inflorescences
Z. Martínková, A. Honěk
Plant Soil Environ., 2010, 56(12):580-583 | DOI: 10.17221/81/2010-PSE
After flowering has ceased, dandelion (Taraxacum agg.) capitula close to enable maturation of seeds. In late summer the period of seed maturation lasts for 9 days. The capitula mowed later than 4 days after the start of this period and desiccated at 25°C produce viable seeds. If cut and prostrated on insolated ground inflorescences can experience temperatures exceeding 50°C which may impair seed viability. We determined the effect of desiccation temperature (5, 15, 25, 35, 45 or 55°C) on viability of ripening seeds using inflorescences harvested on September 5, 2008 at Prague-Ruzyne (50°05'N, 14°18'09 E), five days after flowering ceased (about...
Selenium biofortification and antioxidant activity in lettuce plants fed with selenate and selenite
S.J. Ramos, V. Faquin, L.R.G. Guilherme, E.M. Castro, F.W. Ávila, G.S. Carvalho, C.E.A. Bastos, C. Oliveira
Plant Soil Environ., 2010, 56(12):584-588 | DOI: 10.17221/113/2010-PSE
Selenium is an important element associated with enhancement of antioxidant activity in plants, microorganisms, animals, and humans. In Brazil, the information on Se in agricultural crops is lacking, though there are indications that low levels of Se are consumed by the population. The experiment was conducted under greenhouse conditions with pots containing 3 l of nutritive solution in a completely randomized factorial design, with seven Se concentrations (0, 2, 4, 8, 16, 32, and 64 µmol/l) and two forms of Se (sodium selenate - Na2SeO4 and sodium selenite - Na2SeO3), with six replicates. The application...