Plant Protection Science, 2004 (vol. 40), issue 3
Flight pattern of Archips podana (Lep.: Tortricidae) based on data from pheromone traps
Jitka Stará, František Kocourek
Plant Protect. Sci., 2004, 40(3):75-81 | DOI: 10.17221/1466-PPS 
In 9 years of the period 1993-1999 and 2001-2003 the flight activity of Archips podana was investigated by pheromone traps placed in four apple orchards in Central and East Bohemia. The cumulative catches of A. podana males were plotted against time of the catch expressed in sum of degree-days (DD) above 10°C and approximated by Richards' function. Common parameters of Richards' function could be found for the overwintering generation of A. podana from all localities. The beginning, peak and end of flight activity of the overwintering generation of the A. podana population in Central and East Bohemia can be predicted...
Effects of different field managements on the abundance of cereal aphids (Sternorrhyncha: Aphidoidea).
Ján Praslička, Timotej Miština
Plant Protect. Sci., 2004, 40(3):82-86 | DOI: 10.17221/1465-PPS
The abundance of cereal aphids on winter wheat tillers and ears was determined in two field managements (integrated and ecological) at Dolná Malanta, Slovakia, over the years 1999-2001. The overall average number of aphids detected per tiller in the integrated field management was 22.73, while in the ecological management that number was 15.67; there were thus 31.06% more aphids in the integrated field management. The average number of aphids detected per ear in the integrated field management was 3.64, and in the ecological field management the number was 2.51; again, there were 31.04% more aphids in the integrated field management.
Powdery mildew resistance in some Aegilops species
Miroslav Švec, Marta Miklovičová, Valéria Šudyová, Martina Hudcovicová, Pavol Hauptvogel, Ján Kraic
Plant Protect. Sci., 2004, 40(3):87-93 | DOI: 10.17221/1471-PPS
Resistance to powdery mildew (Blumeria graminis (DC.) E. O. Speer f.sp. tritici Em. Marchal) in Aegilops crassa Boiss., Ae. ventricosa Tausch, Ae. biuncialis Vis., Ae. triuncialis L. and Ae. cylindrica Host was tested at the stage of primary leaves in the years 2000 and 2001. All plants of Ae. ventricosa, Ae. biuncialis and sample No. 9 of Ae. cylindrica repeatedly showed a susceptible reaction after being inoculated by all powdery mildew isolates used. In contrast, plants of Ae. crassa, sample No. 8 of Ae. cylindrica and all samples (No. 13, 21, 22,...
The emergence of a atrazine resistant black nightshade (Solanum nigrum L.) biotype and molecular basis of the resistance
Jaroslav Salava, Daniela Chodová, Kateřina Nováková
Plant Protect. Sci., 2004, 40(3):94-100 | DOI: 10.17221/1470-PPS
Seeds from atrazine resistant plants of black nightshade (Solanum nigrum L.) were collected at the railway station Prague-Vršovice, seeds from susceptible plants in Vyšehořovice (Prague East district). Tests on emergence showed that in both resistant and susceptible biotypes it was highest at a seeding depth of 1 mm, and that at the same seeding depth there were statistically significant differences in emergence between the resistant and susceptible biotypes. The resistance or susceptibility to atrazine was tested by both a chlorophyll fluorescence assay and spraying with atrazine. A region of the gene encoding D1 protein of photosystem II...
Regulation of metabolic pathways PVY-RNA biosynthesis in tobacco: glycolytic pathway
Luděk Šindelář, Milada Šindelářová
Plant Protect. Sci., 2004, 40(3):101-106 | DOI: 10.17221/991-PPS
Tobacco plants infected with potato virus Y were studied at the stage of acute infection. Key enzymes of the glycolytic pathway, their regulation and the content of involved intermediates were monitored. The activities of the key enzymes of the glycolytic pathway (6-phosphofructokinase, fructosebisphosphatase and pyruvate kinase), determined in both crude homogenates and after partial purification, did not differ from the activities found in healthy control tissues. In virus-infected tissues the content of ATP was higher than in the healthy control. The levels of ADP and AMP decreased soon after inoculation, but increased at the end of the...
Evidence and symptoms of pasta infestation by Sitophilus oryzae (Curculionidae; Coleoptera) in the Czech Republic
Václav Stejskal, Zuzana Kučerová, Jan Lukáš
Plant Protect. Sci., 2004, 40(3):107-111 | DOI: 10.17221/971-PPS
Heavy infestation of pasta by the internally feeding pest Sitophilus oryzae (Coleoptera: Curculionidae) was recorded for the first time under field conditions in the Czech Republic. Symptoms of hidden infestation (eggs, larvae, pupae and adults) and a comparison of optical methods to detect them are described for the use by farmers, plant health and phytoquarantine inspectors. Photo-documentation is included.
Doc. Ing. Jozef Huszár, DrSc., is sixty - Biographical Notice
Pavel Bartoš
Plant Protect. Sci., 2004, 40(3):112 | DOI: 10.17221/490-PPS