中文摘要：

针对目前淮山品种退化、品种单一等问题,为选育出高产、优质、适应性强、适合在广西及周边地区种植的淮山新品种,对5个系统选育的淮山品系和对照种桂淮2号的植物学性状、产量、抗性和品质等进行比较试验.结果表明,综合两年平均鲜薯产量,品系GY23、GY26、GY92都极显著高于对照种,分别比对照种增产67.72％、70.73％、34.40％;品系GY44较对照种减产,GY91较对照种增产,但差异均不显著;5个淮山新品系营养均衡,其中GY23铁元素含量最高,比对照种高出32.05％;GY23、GY26、GY91的抗寒抗病性均为高抗水平.GY23、GY26、GY92等3个品系在生长势、产量、抗性和品质等方面均表现较好,较适合在广西及周边地区种植,可进一步进行区域比较试验以及扩大生产试验和示范推广.

英文摘要：

The present study was conducted to select some new high quality varieties of yam with better agronomictraits and suitability for planting in Guangxi and surrounding areas. A comparative analysis on some botanical yield, resistance and quality of five yam varieties was performed by using yam variety Guihuai2 as control. The results showed that the average yields of GY23, GY26, GY92 were very significantly higher than that of the control group, respectively increased by 67.72%, 70.73% and 34.40%, but there was no significant difference in yield among control and GY44, GY91. GY23 had the highest iron amount. GY23, GY26, GY91 showed highly resistance to chilling and diseases. So the strain GY23, GY26 and GY92 which performed better in growth vigor, yield, resistance and quality were appropriate for planting and may be conducted regional trials and extended for demonstration and commercial production in Guangxi and surrounding areas.