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Results 451 - 500 of 1004
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Hammerbacher, A. - - 2009
Fusarium circinatum Nirenberg and O'Donnell is an important pathogen of pine seedlings and cuttings in South Africa. The fungus causes plant death in nurseries, as well as during establishment of pine plantations. The aim of this study was to consider the effects of wound type, spore concentration, and environmental stress ...
Gundel, Pedro - - 2009
Neotyphodium endophyte fungi are vertically transmitted symbionts of cool-season grasses. The seed phase of the grass' life cycle appears to be critical for the persistence of the fungus. Endophyte viability decreases faster than seed viability, but little is known of the effects of this endophyte on seed viability. The endophyte ...
Cook, Rachel - - 2009
A multivariate morphometric study of Solidago subsection Glomeruliflorae (Torr. & A. Gray) Nesom was undertaken on a matrix of 45 characters by 368 plants to assess the morphological differences among the members of the complex and to determine their appropriate taxonomic ranks. The numbers of a priori groups tested were ...
Stephens, Elizabeth - - 2009
The variation in morphological traits and photosynthetic potentials associated with light conditions in the canopy can determine whole-plant function. However, leaf structure-function relationships are poorly studied in ecosystems experiencing nominal light attenuation. We examined morphological leaf traits (area, specific leaf area, thickness, revoluteness, length-width) and photosynthetic traits estimated from rapid ...
Bedonni, Maria - - 2009
The common potato, Solanum tuberosum L. subsp. tuberosum, is a tetrasomic tetraploid. This subspecies has approximately 220 related tuber-bearing species that constitute a genetic pool of enormous breeding value. The diploid species Solanum kurtzianum Bitter et Wittm., described as resistant to drought and nematodes, grows in northwestern and western Argentina ...
Marfo, Jacob - - 2009
C[O.sub.2]--light interactions can influence the competition among boreal plants, but are poorly understood. We investigated the effect of such interactions on the growth and biomass of 1-year-old black spruce (Sb) (Picea mariana (Mill.) BSP) and white spruce (Sw) (Picea glauca (Moench) Voss) grown with C[O.sub.2] concentrations ([C[O.sub.2]]) of 360 and ...
Deflorio, Giuliana - - 2009
Host responses, i.e., formation of reaction and barrier zones, were studied in the xylem of Douglas-fir, beech, oak, and sycamore trees, after wounding and artificial inoculation with brown-, soft-, and white-rot fungi. The objective of this study was to determine whether strongly invasive wood-decay fungi trigger a higher magnitude of ...
Reid, Nick - - 2009
Many mistletoe species are pests in agricultural and forest ecosystems throughout the world. Mistletoes are unusual "weeds" as they are generally endemic to areas where they achieve pest status and, therefore, classical biological control and broad-scale herbicidal control are usually impractical. In North American coniferous forests, dwarf mistletoe (Arceuthobium spp.) ...
Watson, David - - 2009
Parasitic plants are less affected by resource constraints than other plants and most exhibit broad host tolerances, occupy large distributional ranges, and produce high numbers of propagules. Yet, parasitic plants are characteristically rare in undisturbed habitats, and patterns of distribution within host populations are often highly nonuniform. Previous work on ...
Glatzel, G. - - 2009
Mistletoes are highly specialized perennial flowering plants adapted to parasitic life on aerial parts of their hosts. In our discussion on the physiological interactions between parasite and host, we focus on water relations, mineral nutrition, and the effect of host vigour. When host photosynthesis is greatest, the xylem water potential ...
Ostry, M.E. - - 2009
Forest health is described and perceived in different ways by the general public, land owners, managers, politicians, and scientists, depending on their values and objectives. Native tree pathogens and diseases are often associated with negative impacts even though damage is limited or not widespread. Too often, the concepts of tree ...
Ramsfield, Tod - - 2009
Arceuthobium americanum Nuttal ex Engelmann in Gray (lodgepole pine dwarf mistletoe) causes significant losses to the timber industry. The fungus Caliciopsis arceuthobii (Peck) Barr shows high specificity to Arceuthobium spp., and therefore infection of A. americanum was monitored for 4 years to determine the effect of this fungus on fruit ...
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Sarda, Pawan - - 2009
Background & objectives: Drug induced hepatotoxicity (DIH) is an important and commonly encountered adverse effect with antituberculosis (anti-TB) treatment. Acute viral hepatitis (AVH) is an important confounding reason which clinically, biochemically and histologically mimics DIH.
Salvatori, Roberto - - 2009
- - 2009
Levant, Ronald - - 2009
The aim of this pilot research project was to assess the efficacy of Alexithymia Reduction Treatment (ART), a six-session manualized psychoeducational group intervention. A quasi-experimental design was used. The six participants in the Treatment Group were recruited at a university-based counseling center and the seven participants in the Treatment as ...
Morrison, Todd - - 2009
Although the muscular mesomorphic body may be the most common one appearing in mass media, the prevalence of muscularity and the ways in which this body is coded characterologically in motion pictures have not been investigated. To examine this topic, a content analysis was conducted on a random sample of ...
Patrick, Shawn - - 2009
Results of a qualitative study of male perceptions of intimacy are reported here. A semi-structured interview was used to interview five male participants on the topic of intimacy. Transcripts of the interviews were reviewed for thematic material with several themes identified. Definitions of intimacy, the role of masculinity, and risks ...
Zackariasson, Maria - - 2009
This article is based on qualitative interviews with a number of young men who are active in the global justice movement in Scandinavia, and particularly examines what role anger may have in their political involvement. The individual narratives and reflections from the interviews are discussed in relation to the role ...
Madsen, Svend - - 2009
The links between men's health and fatherhood are underscored in studies of the psychological transformation of men as they become fathers, studies of men's mood disorders related to fatherhood, and studies of psychotherapy with men who suffer from postpartum depression. This article discusses two aspects of fatherhood in the Nordic ...
Meloy, Michael - - 2009
This article examines the changing perceptions of ideal masculinity in post World War Two America. Ken Kesey, representative of a growing number of antagonistic male writers in the 1950s and 1960s, uses the mental ward in One Flew Over the Cuckoo's Nest as a microcosm for a contemporary society that ...
Willig, Carla - - 2009
Escobar, Fabio - - 2009
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