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Studies on the physiology and biochemistry of infective juveniles of entomopathogenic steinernematid nematodesPatel, Mavji Nanji January 1997 (has links)
No description available.
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Molecular characterisation of a Bacillus thuringiensis genetic locusDunn, Michael G. January 1996 (has links)
No description available.
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Control of decay in freshly felled pineSchoeman, Magnus Warren January 1995 (has links)
No description available.
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Baculovirus insecticides : development of long-term control strategies based on ecological criteriaWilson, Katharine Ruth January 1997 (has links)
No description available.
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Ecological and evolutionary consequences of a host-pathogen interactionBoots, Michael Robert John January 1993 (has links)
No description available.
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A comparative study of four species of Encarsia (Hymenoptera: Aphelinidae) as potential control agents for Bemisia tabaci (Gennadius) (Homoptera: Aleyrodidae)Avila, Aristobulo Lopez January 1988 (has links)
No description available.
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Molecular cloning and physical mapping of bertha armyworm, <i>mamestra configurata</i>, nuclear polyhedrosis virus genome and preliminary study of geographic isolatesLi, Sheping 01 January 1996 (has links)
Bertha armyworm, Mamestra configurata (Lepidoptera: Noctuidae), is an important pest of cruciferous oilseed crops in western Canada. A nuclear polyhedrosis virus, MacoNPV, isolated from M. configurata, has demonstrated as high as 95% infection in field populations of bertha armyworm. MacoNPV isolates from different geographic areas differ in terms of their virulence to bertha armyworm. Restriction endonuclease (REN) fragment analyses show that all of the geographic isolates are closely related viruses but with some distinct REN pattern differences. Most of these geographic isolates are heterogenous mixtures of genotypes. The thesis describes the cloning and physical mapping of the 156.9 kbp genome of the MacoNPV-90/2 geographic isolate, including 112 restriction sites for six common REN, BamHI, EcoRI, HindIII, PstI, SmaI and XhoI. Twenty plaque purified strains of MacoNPV were isolated in a cultured Mamestra brassicae (Mbr) insect cell line. The EcoRI restriction patterns of these pick plaque (pp) strains fell into 10 different categories. In order to investigate the difference among these pp strains, and between these strains and the parental geographic isolates in terms of REN patterns, virulence to insect hosts, and their growth rates in insect cell lines, some of these isolates were selected for bioassays in bertha armyworm larvae and in the Mbr cell line.
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Vliv moření semen řepky olejné oomycetou Pythium oligandrum na metabolismus rostliny / The effect of rape seed treatment with oomycete Pythium oligandrum on plant metabolismVaverová, Kateřina January 2020 (has links)
Lot of attention is paid to biological control agents of plant pathogens as it will reduce the amount of pesticides used in agriculture. Pythium oligandrum oomycete is already used commercially in the form of watering and spraying. In this work the properties of other isolates were characterized, and the metabolic changes were studied in plants of oilseed rape (Brassica napus subsp. Oleifera), whose seeds were treated with preparates based on Pythium oligandrum. In the first part of the thesis the properties of compounds secreted by isolates of Pythium oligandrum were tested. The amount of phenolic substances and the activity of endoglycosidase endo-β-1,3-glucanase, cellulase, chitinase as well as proteases were measured to assess the ability of oomycete Pythium oligandrum mycoparasitically protect the plant. Substances, especially oligandrin, which during interaction with the plant are responsible for "priming", have been observed, enabling the plant to respond rapidly to pathogen infection through systemic plant resistance. Differences between individual isolates also manifested themselves in electrophoretic separation in the protein representation. In the second part of the work, the effect of rapeseed seed treatment with isolates of Pythium oligandrum on plant metabolism was monitored. While...
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Ways of managing Sclerotinia sclerotiorum inoculum /Thaning, Christian, January 1900 (has links) (PDF)
Diss. (sammanfattning) Uppsala : Sveriges lantbruksuniv. / Härtill 5 uppsatser.
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Antifungal antibiotics from potential biocontrol microorganisms /Pohanka, Anton, January 2006 (has links) (PDF)
Diss. (sammanfattning) Uppsala : Sveriges lantbruksuniversitet, 2006. / Härtill 4 uppsatser.
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