为筛选适宜在河西走廊地区发展的桃抗寒栽培优良品种。在嘉峪关市文殊镇建立区域试验点，对甘露暑蜜、紫胭瑞阳、紫胭瑞秋等6个桃新品种(系)进行了低温冻害、越冬后抽条、花芽冻害等生态适应性研究。结果表明，甘露暑蜜、紫胭瑞阳抽条指数和花芽受冻指数均< 20%，紫胭瑞秋抽条指数和花芽受冻指数< 30%；甘露暑蜜果实发育期105 d(8月中旬成熟)，为中熟普通桃品种，平均单果重为268.5 g，可溶性固形物含量为135.6 g/kg；紫胭瑞阳果实发育期135 d(8月底成熟)，为中晚熟油桃品种，平均单果重166.9 g，可溶性固形物含量为214.1 g/kg ；紫胭瑞秋果实发育期145 d(9月中旬成熟)，为晚熟油桃品种，平均单果重117.3 g，可溶性固形物含量为221.0 g/kg 。以上3个品种品质优良，生态适应性强，可在嘉峪关或同类地区栽植。

To select suitable peach varieties in Hexi Corridor area with cold resistance, in this study, the ecological adaptability of 6 new peach varieties, including Ganlushumi, Ziyanruiyang, Ziyanruiqiu, was studied by establishing a regional experimental site in Wenshu Township, Jiayuguan City. The results showed that the extraction index and the freezing index of flower bud of Ganlushumi and Ziyanruiyang were both below 20%, strip extraction index and flower bud exposure index of Ziyanruiqiu were both below 30%. The fruit of Ganlushumi was a medium-maturing peach variety with an average fruit weight of 268.5 g, soluble solid content of 135.6 g/kg, andthe fruit development period was 105 d(matured in mid August). The fruit development period of Ziyanruiyang was 135 d (matured in late August) with an average fruit weight of 166.9 g and soluble solid content of 214.1 g/kg, and it was a middle to late-maturing nectarine variety. The fruit development period of Ziyanruiqiu was 145 d(matured in mid September)with an average fruit weight of 117.3 g and soluble solid content of 221.0 g/kg, and it was a late-maturing nectarine variety. These 3 varieties showed good quality, strong ecological adaptability, and high cold resistance which could be cultivated in Jiayuguan and areas with similar ecological conditions.

S662.1

嘉峪关市科技计划项目(20-35)；甘肃省主要果树种质资源库项目(18JR2TA021)。