以美国引进的常用品种‘Common’假俭草和目前最耐铝的假俭草品种'TifBlair'为对照品种,采用小容积营养液培养法对选用来自中国13个省份的51份假俭草种质资源耐铝性进行评价.结果表明,1500μmol/L的铝(AlCl3·6H2O)胁迫下假俭草种源间的生长存在显著差异,其中相对根系干重、相对地上部分干重、相对全株干重的变异系数分别为20.55％,15.62％和15.52％.采用隶属函数值的方法对供试材料的耐铝性划分5个等级,处于1～3级的(较耐铝种源)共21个,占总数的39.6％.处于第4级的(中间型)共19个,占总数的35.9％,处于第5级的(铝敏感种源)共13个,占总数的24.5％.其中'Common'假俭草和耐铝的'TifBlair'假俭草属于中间类型,这说明中国假俭草种源的耐铝性存在很大的开发潜力.%The small-volume solution culture method was used to evaluate the aluminum (Al) tolerance of 51 centipedegrass accessions and two cultivars ('TifBlair' and 'Common') from the USA as a basis for selecting centipedegrass resources with strong Al tolerance thus providing an experimental basis for futher genetic improvement. Significant growth differences were found among 53 accessions treated with 1 500 μmol/L Al, and the CVs of relative root weight, relative shoot weight, and relative total weight were 20. 55%, 15. 62% and 15. 52%, respectively. Using the membership function value method, 51 centipedegrass accessions were classified into five groups with different levels of Al tolerance. Twenty-one accessions belonged to groups 1 - 3 (Al-tolerant type), accounting for 39. 6% of the total accessions, 13 accessions belonged to group 5 (Al-sensitive type), accounting for 24. 5%, and 19 accessions belonged to group 4 (intermediate Al-tolerant type), accounting for 35. 9%. 'TifBlair' and 'Common' were intermediate types, indicating a good potential for developing the genetic resource of Al tolerance in centipedegrass.
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