11份苜蓿材料的抗倒春寒性及生产性能比较  

Resistance to Late Spring Coldness and Production Performance Comparison of Eleven Alfalfa Cultivars

作　　者：王运涛[1,2] 于林清[1] 王富贵[3] 刘曙娜[4] 都然 王娜 

机构地区：[1]中国农业科学院草原研究所,内蒙古呼和浩特010010 [2]张家口市农业科学院,河北张家口075000 [3]巴彦淖尔市农牧业科学研究院,内蒙古临河015400 [4]单县第二中学,山东274300 [5]内蒙古自治区环境工程评估中心,内蒙古呼和浩特010011 [6]孝墓乡万华中学,河北073100

出　　处：《中国草地学报》2013年第5期34-39,共6页Chinese Journal of Grassland

基　　金：农业科技成果转化资金项目"耐旱紫花苜蓿新品种中草3号中试与示范"(2011GB23260017);中央级公益性科研院所基本科研业务费专项资金(中国农业科学院草原研究所)项目(1610332013022)

摘　　要：为了解不同苜蓿品种对春季低温的响应,对11份苜蓿材料进行低温胁迫,恢复生长后测定了抗寒指数、地上形态指标、根颈特征和根系特征等多个指标,并进行了相关分析、主成分分析和聚类分析。结果表明:不同苜蓿材料的抗倒春寒性差异明显,其中草原2号的伤害指数最小,抗性最强;肇东次之;敖汉伤害指数最大,抗性最差。生物总产量与株高、分枝数、芽数、节数、根颈直径、主根直径和侧根数呈极显著正相关。苜蓿形态学的主要变异来源于主根直径和根颈直径。YL-2和YL-4可作为培育抗倒春寒苜蓿的材料。The resistance to late spring coldness and the production performance of 11 alfalfa cultivars were studied. The coldness resistance indexes, aboveground indexes, taproot characteristics were meas- ured. The results showed that there were significant differences in resistance to late spring coldness among alfalfa cultivars, damage index of Caoyuan No. 2 was minimal, which has the strongest resistance to late spring coldness, the next was Zhaodong, the damage index of Aohan was maximal, the tolerance to late spring coldness was the worst; the total biomass was positively correlated with height, branch number, bud number, node number, taproot diameter, main root diameter and lateral root number; the main source of variation was from main root diameter and taproot diameter; YL-2 and YL-4 can be used as materials for breeding alfalfa varieties of anti-late spring coldness.

关 键 词：苜蓿 抗倒春寒 形态指标 生产性能 

分 类 号：S503.4[农业科学—作物学]