Author/Authors :
BAYAZİT, Safder Mustafa Kemal University(M.K.Ü) - Ziraat Fakültesi - Bahçe Bitkileri Bölümü, Turkey , TUZCU, Önder Çukurova Üniversitesi(Ç.Ü.) - Ziraat Fakültesi - Bahçe Bitkileri Bölümü, Turkey , KÜDEN, Ayzin B. Çukurova Üniversitesi - Ziraat Fakültesi - Bahçe Bitkileri Bölümü, Turkey , İMRAK, Burhanettin Çukurova Üniversitesi - Pozantı Tarımsal Araştırma Merkezi, Turkey
Abstract :
This study was carried out on Diospyros virginiana L., Diospyros lotus L. and Diospyros kaki L. species and cultivars of Hachiya, O’Gosho, Shakoku, Kaki Tipo, Fuji, Nishimura Wase, Suruga, Jiro, Saijo, Kawabata O’Gosho, Shogatsu, Giboshi, Kirakaki, Amankaki (Italy), Akoumankaki, Kourokuma, Hyakume, Hiratanenashi, Mizushima Gosho, Giant Fuyu (Israel), Triumph and Fujiwara Gosho, and Yeşil Hurma, Şirin Hurma, Tuzcu, Sarı Yenen and Fatsa-1 which are selected Turkish cultivars at the research and implementation orchards at the Department of Horticulture, Faculty of Agriculture, University of Cukurova, in Adana/Turkey during 2003-2004 and 2004-2005 years. The chilling requirements of the species and cultivars were determined using both standard and chill unit methods. The results indicated that the chilling requirements of the species and cultivars significantly varied according to the years. The chilling requirements of Tuzcu and Sarı Yenen cultivars were the lowest (106 h and 95 cu) while those of Fuji cultivar and Diospyros virginiana species were the highest (250 h and 208 cu) during 2003-2004 winter period. Despite the results of 2004-2005 were similar to those of the previous year, the chilling durations of the cultivars were found to be higher than the previous year. Thus, in 2004-2005, the lowest chilling duration was determined in Tuzcu genotype (252 h and 188 cu) and Triumph cultivar (270 h and 190 cu) whereas the highest duration were obtained from Yeşil Hurma and Şirin Hurma genotypes (357 h and 271 cu). The both standard and chill unit methods gave similar results and the efficiency of the results was found to be same. In conclusion, all cultivars completed their dormancy according to the chilling periods that they received between 2 January and 22 January during 2003-2004 winters and 27 December and 19 January during 2004-2005 winters.
NaturalLanguageKeyword :
Persimmon , Species , Cultivar , Chilling , Chill Unit
