Low Temperature Resistance of Developing Flower Buds of Six Deciduous Fruit Species1

Abstract

Abstract Six deciduous fruit species showed similar distribution of mortality with temperature during blossom bud development from dormancy to post bloom. During this period T 50 rose to near −3°C for all species. The range between T 10 and T 90 remained small during dormancy, increased to 6 to 10°C in the early stages of development, then diminished to 1 to 2° in the later stages. Variability within samples decreased markedly with development.