Response of soybean to gibberellin A3 application under conditions of high boron availability     

Grzegorz A. Nowak  Jerzy Czapla 《Journal of plant nutrition》2013,36(10):2179-2190

In a pot trial in which soybean [Glycine max (L.) Merr.] plants were overfertilized by boron (B) at rates of 5, 10, and 15 mg per pot in 6 kg of soil, a reduction of shoot weight and seed yield was obtained. Boron limited protein synthesis and inhibited dipeptidase activity. Under the effect of B overfertilization, the rates of absorption and accumulation of major macronutrients was remarkably decreased. Foliar treatment with gibberellin (A3) in the early phases of plant development partly compensated for the negative effect of B overdosing.  相似文献   

Effect of light wavelength on growth and flowering of narcissi forced under short-day and low quantum irradiance conditions     

A. Woźny  M. Jerzy 《The Journal of Horticultural Science and Biotechnology》2013,88(6):924-928

Summary

Four narcissus cultivars were forced under artificial light using fluorescent lamps which emitted white (307 – 770 nm), blue (393 – 580 nm), red (540 – 760 nm), yellow (450 – 750 nm), or green (387 – 680 nm) light. The photosynthetic photon flux density was 12.5 μmol m^–2 s^–1, with a 6 h photoperiod. Light colour (wavelength) had no significant effect on flowering date, or on the number of flowers collected (P < 0.05). Narcissus bulbs exposed to blue light (393 – 580 nm) formed shorter, more rigid shoots of lower weight with 13 – 40% shorter leaves.  相似文献   

Characteristics of permafrost-affected soil in a cliff in the central part of the Polish Baltic coastal zone     

Bogusława Kruczkowska  Jerzy Jonczak  Joanna Gadziszewska 《Journal of Soils and Sediments》2017,17(4):960-973

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Changes in soil morphology of Podzols affected by alkaline fly ash blown out from the dumping site of an electric power plant     

Jerzy Weber  Andrzej Kocowicz  Magdalena Debicka  Elżbieta Jamroz 《Journal of Soils and Sediments》2017,17(7):1852-1861

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Effect of platelet activating factor (PAF) supplementation in semen extender on viability and ATP content of cryopreserved canine spermatozoa     

Kordan W  Lecewicz M  Strzezek R  Dziekońska A  Fraser L 《Polish journal of veterinary sciences》2010,13(4):571-579

The aim of this study was to investigate the effect of platelet activating factor (PAF) on the quality characteristics of cryopreserved canine spermatozoa. Cryopreserved semen of 5 mixed-breed dogs was treated with different concentrations of exogenous PAF (1 x 10(-3) M, 1 x 10(-4) M, 1 x 10(-5) M and 1 x 10(-6) M) and examined at different time intervals (0, 30, 60 and 120 min). Cryopreserved semen treated without PAF was used as the control. Sperm quality was evaluated for motility (computer-assisted semen analysis, CASA), mitochondrial function (JC-1/PI assay) and plasma membrane integrity (SYBR-14/PI assay and Hoechst 33258). Also, ATP content of spermatozoa was determined using a bioluminescence assay. Treatment of cryopreserved semen with 1 x 10(-3) M PAF at 120 min of incubation resulted in significantly higher total sperm motility compared with the control. It was observed that PAF-improved total sperm motility was concurrent with enhanced sperm motility patterns after treatment of cryopreserved semen. Treatment of cryopreserved semen with PAF did not improve either sperm mitochondrial function or plasma membrane integrity, as monitored by different fluorescent membrane markers. Furthermore, ATP content of cryopreserved spermatozoa was significantly higher when PAF was used at a concentration of 1 x 10(-3) M compared with the control and other PAF treatments, regardless of the incubation time. The findings of this study indicated that treatment with 1 x 10(-3) M PAF at 120 min of incubation rendered better quality of cryopreserved canine semen, which was associated with improved sperm motility parameters and ATP content. It can be suggested that exogenous PAF addition is beneficial as a supplement for canine semen extender used for cryopreservation.  相似文献   

Comparison of the main bioactive compounds and antioxidant activities in garlic and white and red onions after treatment protocols     

Gorinstein S  Leontowicz H  Leontowicz M  Namiesnik J  Najman K  Drzewiecki J  Cvikrová M  Martincová O  Katrich E  Trakhtenberg S 《Journal of agricultural and food chemistry》2008,56(12):4418-4426

Polish garlic and white and red onions were subjected to blanching, boiling, frying, and microwaving for different periods of time, and then their bioactive compounds (polyphenols, flavonoids, flavanols, anthocyanins, tannins, and ascorbic acid) and antioxidant activities were determined. It was found that blanching and frying and then microwaving of garlic and onions did not decrease significantly the amounts of their bioactive compounds and the level of antioxidant activities ( P > 0.05). The HPLC profiles of free and soluble ester- and glycoside-bound phenolic acids showed that trans-hydroxycinnamic acids (caffeic, p-coumaric, ferulic, and sinapic) were as much as twice higher in garlic than in onions. Quercetin quantity was the highest in red onion among the studied vegetables. The electrophoretic separation of nonreduced garlic and onion proteins after boiling demonstrated their degradation in the range from 50 to 112 kDa.  相似文献   

Molecular epizootiology of equine arteritis virus isolates from Poland   总被引：1，自引：0，他引：1  

Larska M  Rola J 《Veterinary microbiology》2008,127(3-4):392-398

Phylogenetic analysis was performed on the sequences of 44 Polish isolates of equine arteritis virus that were isolated from the semen of stallions from national and private studs, collected during 2001--2005. These sequences were also compared with 41 reference strains previously described and commonly used in phylogenesis. On the basis of the nucleotide sequence analysis of the ORF5 gene, encoding the glycoprotein GP5, it was demonstrated that the Polish EAV isolates belonged to two subgroups and showed the closest relationship to the European strains. Similar results were obtained using the nucleotide sequences of the ORF7 gene. The nucleotide identity between the ORF5 and ORF7 sequences of all Polish isolates was in the range of 80.1-99.0% and 93.6-100%, respectively. The analysis of genetic diversity within the ORF5 sequences enabled a retrospective epizootic investigation. This study suggested that some of the EAV shedding stallions were probably infected before they were moved to Poland.  相似文献   

Ingestion of Black Chokeberry Fruit Extract Leads to Intestinal and Systemic Changes in a Rat Model of Prediabetes and Hyperlipidemia   总被引：2，自引：2，他引：0  

Jurgoński A  Juśkiewicz J  Zduńczyk Z 《Plant foods for human nutrition (Dordrecht, Netherlands)》2008,63(4):176-182

This report presents a complex analysis of changes proceeding in the gut, blood and internal organs of rats with induced oxidative stress, glucose intolerance and hyperlipidemia after dietary supplementation with an extract from black chokeberry (Aronia melanocarpa) fruit, that is a condensed source of polyphenols (714 mg/g), especially anthocyanin glycosides (56.6%). The disturbances mimicking those observed in metabolic syndrome were induced by a high-fructose diet and simultaneous single injection of streptozotocin (20 mg/kg). Dietary supplementation with the chokeberry fruit extract (0.2%) decreased activity of maltase and sucrase as well as increased activity of lactase in the mucosa of the small intestine. Its ingestion led also to the improvement of antioxidant status, especially, the concentration of a lipid peroxidation indicator (TBARS) in organ tissues (liver, kidney and lung) was normalized; some cholesterol-lowering and distinct hypoglycemic actions were also observed. The mechanism of glucose reduction is likely to be multifactorial, and we suggest the factors related with the decreased activity of mucosal disaccharidases important for further investigation. In conclusion, chokeberry fruit derivatives may act as a promising supplementary therapeutic option in the prevention and treatment of disorders occurring in metabolic syndrome, as well as their complications.  相似文献   

Chilling stress tolerance of two soya bean cultivars: Phenotypic and molecular responses     

Jakub Kuczyński  Tomasz Twardowski  Jerzy Nawracała  Joanna Gracz-Bernaciak  Agata Tyczewska 《Journal of Agronomy and Crop Science》2020,206(6):759-772

Chilling stress is a major factor limiting the yield of soya bean [Glycine max (L.) Merr.] on a global scale. However, the regulatory network that controls the chilling response of soya bean remains unclear. In the present study, phenotyping and quantitative analyses of miRNAs in soya bean under chilling stress were carried out to determine the impact of environmental constraints on soya bean productivity. Measurements done during soya bean growth in chilling along with the results of field trials indicated that the cultivars Augusta and Fiskeby V responded differently to low temperatures. Although chilling affected the reproductive development of both cultivars, the final seed output remained unchanged. The differential expression of miR169, miR319, miR397 and miR398 under cold stress was detected using ddPCR. Upon chilling in the reproductive stage, we found that these miRNAs had contrasting expression profiles in Augusta and Fiskeby V. A set of candidate target genes was predicted based on degradome sequencing data. A negative correlation was found between the expression of miR169, miR319 and miR398 and their targets in the roots of both cultivars. Our work elucidates the impact of chilling stress on the productivity of two soya bean cultivars and reveals the importance of miRNA involvement in the low temperature response.  相似文献   

Identification of Powdery Mildew Resistance Genes in Selections from Moroccan Barley Landraces     

Jerzy Henryk Czembor  Henryk Jerzy Czembor 《Acta Agriculturae Scandinavica, Section B - Plant Soil Science》2013,63(2):116-120

Abstract

The formation of yield in two different combinations: vetch with wheat or oats, and the effect of vetch on yield potential of cereals has been investigated in Estonian field experiments over three years. We found that the inclusion of vetch seed in cereal seed and increase of its seed density led to considerable decrease in the yield of the cereal component (R=0.980–0.998). The adverse effect of vetch on cereal yield led to a reduction in wheat yield by up to 1861?kg?ha^?1 on average for the three years, and in oats yield by up to 1413?kg?ha^?1. One reason for the decreases in cereal yields was the formation of smaller grains in cereals under increased vetch seed densities. As a three-year average, the wheat 1000-seed weight decreased by up to 6.3 g while the corresponding figure for oats under identical conditions was 2.5 g. The inclusion of vetch in a crop and the increase of its seed density led to a substantial increase in the protein content of cereal grains. In oats, the change in grain protein content was smaller. At the same time, the maximum protein yield per area unit in cereals was obtained from their monocultures. In a mix with vetch, the amounts of nitrogen consumed by cereals decreased and protein yield of cereals per area unit reduced at higher vetch seed densities. Vetch-cereal mixes had an advantage over cereal monocultures as far as protein yield was concerned. In vetch-wheat and vetch-oats mixes the maximum protein yield was 500?kg?ha^?1 and 438?kg?ha^?1, respectively, on average for the three years. Of the two combinations, vetch-oats mixed crop gave the highest yield of grain, whereas the higher mixed crop yield resulted from the oats component. Oats is somewhat more competitive with vetch than wheat. Vetch-wheat mixed crop gave the highest protein yield because the protein content of wheat grains was higher than oat grains. Legume-cereal mixes are particularly suited for the conditions of organic farming as they ensure a relatively good harvest and a high protein yield.  相似文献