草地学报

›› 2010, Vol. 18 ›› Issue (2): 223-227.DOI: 10.11733/j.issn.1007-0435.2010.02.015

• 研究论文 • 上一篇    下一篇

16个引进多花黑麦草品种苗期耐盐评价

许能祥1, 顾洪如1, 冯柏青2, 张霞1, 程云辉1, 丁成龙1   

  1. 1. 江苏省农业科学院畜牧研究所, 江苏, 南京, 210014;
    2. 江苏省句容市农业局, 江苏, 句容, 212400
  • 收稿日期:2009-08-18 修回日期:2009-12-23 出版日期:2010-04-15 发布日期:2010-04-15
  • 通讯作者: 丁成龙,E-mail:dingcl@jaas.ac.cn
  • 作者简介:许能祥(1976- ),男,江苏句容人,硕士,主要从事农区牧草资源与育种技术研究,E-mail:xunengxiang97@yahoo.com.cn
  • 基金资助:
    国家科技支撑计划资助(2008BADB3B10);江苏省科技支撑计划(BE2009306)资助

Evaluation of Salt Tolerance of 16 Introduced Varieties of Italian Ryegrass at Seedling Stage

XU Neng-xiang1, GU Hong-ru1, FENG Bo-qing2, ZHANG Xia1, CHENGYun-hui1, DING Cheng-long1   

  1. 1. Institute of Animal Science, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu Province 210014, China;
    2. Jurong Agricultural Bureau, Jurong, Jiangsu Province 212400, China
  • Received:2009-08-18 Revised:2009-12-23 Online:2010-04-15 Published:2010-04-15

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摘要： 采用盆栽实验,对多花黑麦草(Lolium multif lourum Lam.)苗期盐胁迫的各项耐盐指标进行综合研究评价,为筛选适宜盐碱地种植的多花黑麦草品种提供理论依据。设置0%、0.2%2个NaCl盐浓度水平,系统地测定和分析了16个引进多花黑麦草品种苗期植物学指标和生理生化指标。结果表明:0.2%NaCl处理下16个多花黑麦品种平均植株高度、根长、地下部生物量分别显著低于0%NaCl处理(P<0.05);平均地上部生物量低于0%NaCl处理,平均单株茎蘖数略多于0%NaCl处理,但差异不显著;7个品种的可溶性糖含量显著低于0%NaCl处理,11个品种的相对电导率显著高于0%NaCl处理(P<0.05)。对相关的植物学指标和生理生化指标聚类分析得出,相对耐盐品种8个,中度耐盐品种4个,相对盐敏感品种4个。

关键词: 多花黑麦草, 耐盐性, 生物产量, 聚类分析

Abstract: Salt tolerance indicators of Italian ryegrass(Lolium multif lourum Lam.) at seedling stage were integrated evaluated in order to identify and utilize the suitable germplasm for alkaline soil.Under salt stress at 0% and 0.2% NaCl,the botanical,physiological,and biochemical indicators of Italian ryegrass were determined and analyzed for salt tolerance comparison.The results show that the average plant height,root length,and underground biomass of 16 varieties at 0.2% NaCl were significantly lesser than those at 0% NaCl(P<0.05),the average aboveground biomass was lower than that at 0% NaCl,and the average tiller no.per plant was slightly more than that at 0% NaCl without significant difference.Soluble sugar contents of 7 varieties at 0.2% NaCl were significantly lower than those at 0% NaCl and relative electrical conductivity rate of 11 varieties were significantly higher than those at 0% NaCl(P<0.05).According to the clustering analysis based on the botanical,physiological,and biochemical indicators,the tested 16 varieties were divided into three groups as 8 varieties were relatively salt tolerant,4 varieties moderately salt tolerant,and 4 varieties relatively susceptive to salt stress.

Key words: Italian ryegrass, Salt tolerance, Biomass yield, Cluster analysis

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