6Seif S, Gruppe W. Chilling requirements of sweet cherries (Prunus avium) and interspecific cherry hybrids (Pi'unus x ssp. ) [ J]. Acta Hortic, 1985, 169:289-294.
7Lang G A, Olmstead J W, Whiting M D. Sweet cherry fruit distribution and leaf populations: modeling canopy dynamics and management strategies[ J]. Aeta Hortic, 2004, 636 : 591 - 599.
8Postweiler K, Stosser R, Anvari S F. The effect of different temperatures on the viability of ovules in cherries[ J]. Sci Hortic, 1985, 25 (3) : 235 - 239.
9Grataces E, Cortes A. Phenology and production of sweet cherry cultivars in a low chilling area of central Chile[ J]. Acta Hortic, 2008, 795 : 239 -244.
10Godiui A, Palasciano M, Ferrara G, et al. On the advancement of bud break and fruit ripening induced by hydrogen cyanamide ( Dor- mex) in sweet cherry: a three year study[ J]. Acta Hortic, 2008, 795:469 - 478.