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当前位置: 首页 > 文章 > 柳枝稷苗期对氮素胁迫耐受性的综合评价 中国草地学报 2013,35 (4) 66-70，75
Position: Home > Articles > Comprehensive Evaluation of Tolerance of Switchgrass to Nitrogen-deficiency Stress at Seedling Stage Chinese Journal of Grassland 2013,35 (4) 66-70，75

柳枝稷苗期对氮素胁迫耐受性的综合评价

作  者：
朱毅;范希峰;武菊英;侯新村;李钰莹;赵春桥
单  位：
北京市农林科学院北京草业与环境研究发展中心
关键词：
柳枝稷;氮素胁迫;标准差;权重法
摘  要：
为明确柳枝稷在缺氮处理下的耐受能力从而筛选出优质的种质资源,以13份柳枝稷种质为供试材料,在人工气候室中进行水培试验,通过相关农艺性状和生理指标等评价指标的测定,采用标准差系数赋予权重法对柳枝稷在胁迫下的表现做综合评价。结果表明:氮素胁迫对13个不同柳枝稷种质的总生物量、根长、净光合速率、叶绿素含量、叶表面积等指标具有显著抑制作用。标准差系数赋予权重法得出的各材料耐氮胁迫性依次为:BJ-4>BJ-3>Forestburg>Pathfinder>BJ-5>Blackwell>BJ-2>Kanlow>Alamo>Cave-In-Rock>BJ-1>Trailblazer>BJ-6,评价结果与实际观测结果基本一致。
译  名：
Comprehensive Evaluation of Tolerance of Switchgrass to Nitrogen-deficiency Stress at Seedling Stage
作  者：
ZHU Yi,FAN Xi-feng,WU Ju-ying,HOU Xin-cun,LI Yu-ying,ZHAO Chun-qiao(Beijing Research and Development Center for Grass and Environment,Beijing Academy of Agriculture and Forestry Sciences,Beijing 100097,China)
关键词：
Switchgrass;Nitrogen-deficiency stress;Standard deviation;Weighed method
摘  要：
To reveal the effects of nitrogen-deficiency stress on the biomass,agronomic traits and physiological indexes of switchgrass and to obtain the new germplasm with best tolerance,13 switchgrasses were treated under nitrogen-deficiency in hydroponics in artificial climatic chamber.The comprehensive evaluation was made through the analysis of evaluation indexes with the standard deviation coefficient allocation weighed method.The results showed that the nitrogen-deficiency stress had exerted significantly inhibitory effects on the agronomic traits and physiological characteristics of switchgrass.The resistance of 13 switchgrasses from strong to weak was as follows: BJ-4,BJ-3,Forestburg,Pathfinder,BJ-5,Blackwell,BJ-2,Kanlow,Alamo,Cave-In-Rock,BJ-1,Trailblazer and BJ-6 according to standard deviation coefficient allocation weighed method.

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