A Comparative Study of Biological Traits between Two Peach Cultivars

目的]比较新川中岛和艳红桃2个桃品种的生物学性状，以期为筛选出适应贵州省气候特点的优良桃树品种提高依据。方法]连续3年（2011～2013）调查新川中岛、艳红桃2个在当地表现较好的引进桃树品种的物候期、植物学特性、经济性状和抗逆性等内容，并进行比较筛选。结果]2个桃品种在当地科学管理条件下，从综合比较结果看，新川中岛和艳红桃的树势分别表现为较强和强，枝条萌芽率分别为55.82%和55.81%，成枝率分别为28.39%和23.26%，叶片大小分别为17.1 cm＆#215;4.2 cm和19.5 cm ＆#215;5.0 cm，花的大小为4.8 cm ＆#215;4.7 cm和4.8 cm ＆#215;4.9 cm，座果率分别为43.19%和26.66%，成熟期分别为7月中下旬、7月下旬～8月上旬，平均单果重分别为195.5和216.9 g，含糖量分别为13.5%和15.8%，单株产量分别为41.3和43.1 kg，果实可食率分别为94.35%和93.81%，都表现为适应性强。结论]从综合比较结果看，新川中岛品种表现很好，艳红桃品种表现较好，适合在该地区适量发展。

A Comparative Study of Biological Traits between Two Peach Cultivars

Objective]This study aimed to compare the biological traits of Xinchuanzhongdao peach and Yanhong peach and provide basis for screening high-quality peach cultivars adapting to climate characteristics in Guizhou Province. Method] During three consecutive years from 2011 to 2013, phenophase, botanical traits, economic traits and stress resistance of two introduced peach cultivars, Xinchuanzhongdao peach and Yanhong peach, were investigated and compared. Result] Under local scientific management conditions, Xinchuanzhongdao peach and Yanhong peach exhibited relatively strong and strong tree vigor, respectively; the branch generation rate was 55.92% and 55.81%, respectively; the branching rate was 28.39% and 23.26%, respectively; the leaf size was 17.1 cm＆#215;4.2 cm and 19.5 cm＆#215;5.0 cm, respectively; the corol a size was 4.8 cm＆#215;4.7 cm and 4.8 cm＆#215;4.9 cm, respectively; the fruit setting rate was 43.19% and 26.66%, respectively; fruits of Xinchuanzhongdao peach and Yanhong peach were matured in mid-late July and late July-early August, respectively; the average weight per fruit was 195.5 and 216.9 g, respectively; the sugar content was 13.5% and 15.8%, respectively; the average yield per plant was 41.3 and 43.1 kg, respectively; the edible rate was 94.35% and 93.81%, respectively; both Xinchuanzhongdao peach and Yanhong peach exhibited adaptability. Conclusion] Comprehensive comparison results suggest-ed that Xinchuanzhongdao peach exhibited better performance compared with Yan-hong peach and these two peach cultivars could be developed appropriately with supporting cultivation techniques in Guiyang City.