中文摘要：

测定了23个云蔗优良品种在四川蔗区自然低温寒害条件下的抗寒性（对照种为RoC22）。结果表明，云蔗03—194、云蔗05—51、云蔗05—49、云蔗07—2007、云蔗08—1095、云蔗08—1609、云蔗05—326和云蔗07—2178八个品种（系）高产高糖，抗寒性好；云蔗06—193、云蔗04—622、云蔗03—258、云蔗06—407、云蔗05—211、云蔗05—39和云蔗08—1145七个品种（系）农艺性状和抗寒性总体优于对照，其它参试品种不及Roc22。

英文摘要：

Tests were carried out to evaluate the cold tolerance of YZ sugarcane varieties at natural low temperatures in Zizhong area, Sichuan province, with ROC22 as a control. The results showed that eight sugarcane clones of YZ03-194, YZ05-51, YZ05-49, YZ07-2007, YZ08-1095, YZ08-1609, YZ05-326 and YZ07-2178 had strong cold tolerance and high yield and high sugar content characters. Seven clones of YZ06- 193, YZ04-622, YZ03-258, YZ06-407, YZ05-211, YZ05-39 and YZ08-1145 had better cold tolerance and agronomic traits, but the traits of others were poorer than that of ROC22.