To study effects of salicylic acid (SA) treatments (0, 0.5, 1 and 2 mM) in two forms of seed priming (for 24 h) and spraying on seedling at 4-6 leaf stage an experiment was conducted on periwinkle (Catharanthus roseus Don.) with and without exposure to a mild cold stress of 8 °C (for 32 h). Seeds were sown in trays containing peat-based substrate (with 20% sandy loam field soil). Transplants of...

Context Wheat (Triticum aestivum L.) adaptation is highly dependent on crop lifecycle duration, particularly the time at which flowering occurs in a specific environment. Frost, low solar radiation, heat and drought can significantly reduce yield if flowers too early or late. genotypes have different durations determined by plant responses to temperature (thermal accumulation vernalisation) pho...

Agriculture and forestry are two economic sectors most dependent on climate, climate change has a direct indirect impact biotic abiotic disturbances with strong implications. The air temperature is one of the major environmental factors affecting growth, development, yields crops. Despite undeniable global warming, damage to crops by frost freezing temperatures causes serious loss farmers in ma...

Photosynthesis in balsam fir (Abies balsamea (L.) Mill.) was measured in the field at two locations in New Brunswick, Canada from late winter to late spring in 2004 and 2005. No photosynthesis was detectable while the soil remained below 0 degrees C throughout the rooting zone. In both years, photosynthesis began once soil temperature rose to 0 degrees C. In potted seedlings in growth chambers,...

In this review, we briefly discuss factors that increase spring frost risk in viticulture and provide updates on vine susceptibility to events damage assessment. The core of the review describes a physiologically based tool prevent by delayed winter pruning (done at or beyond “wool” bud stage) postpone budbreak. exploited principle is related inherent acrotony grapevine, which would “sacrifice”...

Meso-scale constitutive models of frost-damaged concrete are developed in this study through numerical simulation using a two-dimensional Rigid Body Spring Model (RBSM). The aim of the simulation is to predict the macro behavior of frost-damaged concrete subjected to mechanical loading. The models also clarify the difference in failure behavior of concrete with and without frost damage. Zero st...

This study presents an updated assessment of the projected climate change over Greece in near future (2021–2050) and at end 21st century (2071–2100) (EOC), relative to reference period 1971–2000, focusing on seasonal crop-specific climatic indices. The indices include days (d) with: a maximum daily near-surface temperature (TASMAX) > 30 °C Spring, TASMAX 35 Summer (hot days), minimum (TASMIN...

The significant climate feedback of stratospheric water vapor (SWV) necessitates quantitative estimates SWV budget changes. Model simulations driven by the newest European Centre for Medium-Range Weather Forecast reanalysis ERA5, satellite observations from Stratospheric Water and OzOne Satellite Homogenized data set, Microwave Limb Sounder, in situ frost point hygrometer Boulder all show subst...

Yucca glauca is a C(3) evergreen rosette species locally common in the C(4)-dominated grasslands of the central Great Plains. Most congeners of Y. glauca are found in deserts, and Y. glauca's morphological similarities to desert species (steeply angled leaves, evergreen habit) may be critical to its success in grasslands. We hypothesized that the evergreen habit of Y. glauca, coupled with its a...