UNDERCOOLING OF PEACH BUDS

Properties of peach flower buds which facilitate supercooling.

Water in dormant peach (Prunus persica [L.] Batsch. var. ;Harbrite') flower buds deep supercooled. Both supercooling and the freezing of water within the bud axis and primordium as distinct components depended on the viability of the bud axis tissue. The viability of the primordium was not critical. Supercooling was prevented by wounding buds with a dissecting needle, indicating that bud struct...

an investigation on freezing tolerance of peach and nectarine reproductive buds in controlled conditions

damage caused by freezing can be the result of differences in cellular processes, including changes in membrane properties, interactions between macromolecular and enzymatic reactions. in this experiment, total soluble solids (tss) and relative water content of the reproductive buds of cultivars “j. h. hale”, “elberta,” “redhaven, ” “sorkh sefid mashhad” and “amsden” peaches, along with nectari...

Effects of Growth Regulating Chemicals on the Opening of Vegetative and Floral Buds of Peach and Pear.

Application of certain growth regulatinig substanices to the stein and leaves of plants often affects the rate of growth of the terminal and lateral buds. This effect has attracted the attention of many investigators, but up to now vegetative, rather than flower buds, have been studied (2, 3, 8). In general, the application of some of the growth regulating chemicals in relatively high concentra...

Phony Peach and Peach Mosaic

Saffman-Taylor fingers with kinetic undercooling.

The mathematical model of a steadily propagating Saffman-Taylor finger in a Hele-Shaw channel has applications to two-dimensional interacting streamer discharges which are aligned in a periodic array. In the streamer context, the relevant regularization on the interface is not provided by surface tension but instead has been postulated to involve a mechanism equivalent to kinetic undercooling, ...