Anurag A. Agrawal,* Jeffrey K. Conner and John R. Stinchcombe Department of Botany, University of Toronto, 25 Willcocks Street, Toronto, ON, Canada M5S 3B2 Kellogg Biological Station and Department of Plant Biology, Michigan State University, 3700 East Gull Lake Drive, Hickory Corners, MI 49060, USA Department of Ecology and Evolutionary Biology, Box G-W, Brown University, Providence, RI 02912,...

frost tolerance of winter wheat depends primarily on a strong vernalization requirement, delaying the transition to reproductive phase. the responses of four bread wheat cultivars (triticum aestivum l.) to low-temperatures were examined in controlled environment and field conditions. prolonged cold treatment accelerated the transition to reproductive development in winter wheats (cv. norstar an...

Frost is the coating or deposit of ice that may form in cold conditions, usually overnight. If the temperature drops far enough for the plant cells to freeze, non hardy plants will die. Therefore, a research was laid out to study the influence of an anti-frost solution on growth, flowers quality and biochemical parameters of ornamental plants. The anti-frost solution was applied as foliar spray...

1. introduction early frost in the autumn and late spring frost are the most common disasters related to the huge agricultural damages in west azerbaijan province. among 39 natural disasters in the world, 7 dominant disasters occur in this region and the frost has the first rank regarding the damage to the public sector and insurance industry in recent years. based on several reports, early spr...

The objectives of this study are to provide experimental data and a correlation that can be used in the optimal design of an evaporator under frost conditions. In the present study, we tested both a single stage and a two-stage evaporator with a variation of operating parameters and fin geometry under frost conditions. The effects of tube space and fin alignment on the heat transfer performance...

The injury caused by frost is characterised by browning of the canopy and the leaf sheaths, but the growing point may also be severely damaged by destruction of some or all of the meristematic tissue. Experience gained in previous years has served to indicate that frosted cane does not in all cases deteriorate with the same raviditv. Thus, when rain falls on cane damaged by frcst, or conditions...

Reactive halogens are responsible for boundarylayer ozone depletion and mercury deposition in Polar Regions during springtime. To investigate the source of reactive halogens in the air arriving at Barrow, Alaska, we measured BrO, an indicator of reactive halogen chemistry, and correlated its abundance with airmass histories derived from meteorological back trajectories and remotely sensed sea i...

                The value of frost tolerance in wheat is increased with decreasing the temperature in late autumn and/or early winter (phase I, acclimation), then shows plateau state for a period with the coldest temperature (II), finally appears to decrease with warming the temperature (III, de-acclimation). This study was aimed to determine the threshold frost hardiness in wheat for avoiding ...

This work expands upon previous on a moving bed cryogenic carbon capture (CCC). Cryogenic using fixed packed captures CO2 frost deposited the surface of material; this build-up fouls heat transfer column and requires periodic shut down process to regenerate material collect for further storage. Using continuously removes frosted from preventing excessive eliminating need regeneration step withi...