The effect of water deficit on carbohydrate status and enzymes of carbohydrate metabolism (alpha and beta amylases, sucrose phosphate synthase, sucrose synthase, acid and alkaline invertases) in wheat (Triticum aestivum L.) was investigated in the seedlings of drought-sensitive (PBW 343) and drought-tolerant (C 306) cultivars. The water deficit was induced by adding 6% mannitol (water potential...

OBJECTIVES The aim of this study was to assess acute health effects on planters caused by planting conifer seedlings treated with two insecticides, with active ingredients imidacloprid and cypermethrin, in comparison with untreated seedlings. METHODS The investigation was a double-blind crossover study, which included a follow-up of 19 planters over a 3-week period. During Week 1, the 19 plan...

Transplant stress limits establishment of newly planted seedlings in semiarid Mediterranean regions, which are characterized by very low precipitation and poor fertility soils. Nursery cultural regimes which influence stock quality, as well as silvicultural treatments applied at outplanting may affect the capacity of seedlings to establish successfully. We examined the influence of nursery mine...

Postprint This is the accepted version of a paper published in Forestry (London). This paper has been peer-reviewed but does not include the final publisher proof-corrections or journal pagination. Protection of spruce seedlings against pine weevil attacks by treatment of seeds or seedlings with nicotinamide, nicotinic acid and jasmonic acid. Access to the published version may require subscrip...

Colonization of host plants by microbial symbionts and avirulent parasites often elicits physiological modifications such as localized and systemic disease resistance1–4) and drought or dehydration tolerance5–7). Among such microbes, soil-inhabiting actinomycetes have attracted much attention as potential biocontrol agents in agriculture because of their ability to produce a variety of antibiot...

BACKGROUND AND AIMS It is well known that genome size differs among species. However, information on the variation and dynamics of genome size in wild populations and on the early phase of genome size divergence between taxa is currently lacking. Genome size dynamics, heritability and phenotype effects are analysed here in a wild population of Festuca pallens (Poaceae). METHODS Genome size wa...

Hybrid zones contain extensive standing genetic variation that facilitates rapid responses to selection. The Picea glauca × Picea engelmannii hybrid zone in western Canada is the focus of tree breeding programs that annually produce ~90 million reforestation seedlings. Understanding the direct and indirect effects of selective breeding on adaptive variation is necessary to implement assisted ge...

Investigating patterns of phylogenetic structure across different life stages of tree species in forests is crucial to understanding forest community assembly, and investigating forest gap influence on the phylogenetic structure of forest regeneration is necessary for understanding forest community assembly. Here, we examine the phylogenetic structure of tree species across life stages from see...

One of the most serious diseases in potato cultivars is caused by the pathogen Phytophthora infestans, which affects leaves, stems and tubers. Metalaxyl is a fungicide that protects potato plants from Phytophthora infestans. In Mexico, farmers apply metalaxyl 35 times during the cycle of potato production and the last application is typically 15 days before harvest. There are no records related...