Acta Agrestia Sinica ›› 2017, Vol. 25 ›› Issue (4): 790-795.DOI: 10.11733/j.issn.1007-0435.2017.04.015

Previous Articles     Next Articles

Effects of Na2CO3 on Underground Indexes of 10 Alfalfa Cultivars at Initial Stage of Growth

WANG Yun-tao1, YU Lin-qing2, YUAN Ting1, WANG Xiao-jie1, XIE Ji-hong2   

  1. 1. Zhangjiakou University, Zhangjiakou, Hebei Province 075000, China;
    2. Institute of Grassland Research of CAAS, Hohhot, Inner Mongolia 010010, China
  • Received:2016-05-25 Revised:2017-06-13 Online:2017-08-15 Published:2017-11-01

Na2CO3盐胁迫对10个苜蓿品种生长初期地下指标的影响

王运涛1, 于林清2, 远婷1, 王晓杰1, 解继红2   

  1. 1. 张家口学院, 河北 张家口 075000;
    2. 中国农业科学院草原研究所, 内蒙古 呼和浩特 010010
  • 通讯作者: 于林清,E-mail:linqing_yu@126.com
  • 作者简介:王运涛(1985-),男,河北保定人,硕士研究生,讲师,主要从事牧草育种研究工作,E-mail:wytao88@163.com;
  • 基金资助:

    国际作物多样性基金子项目"苜蓿抗旱性评价(GS15014)";河北省高等学校青年拔尖人才计划项目"冀西北地区苜蓿耐盐适应性研究(BJ201606)"资助

Abstract:

Ten alfalfa (Medicago sativa.) varieties were treated with five concentrations of Na2CO3 to study the effects of salinity-alkalinity stress. The crown diameter, crown depth, taproot diameter, lateral root diameter and lateral root position at initial stage of growth were measured to determine the effect of salt stress. The results showed that the indexes were significant differences at different grades of Na2CO3 solution; the crown diameter and the taproot diameter were decreased with the increase of Na2 CO3 concentration, the crown depth and lateral root position were increased with the increase of Na2CO3 concentration; but the lateral root diameter did not have an obvious tendency;According to the comprehensive analysis, ‘AC Caribou’ and ‘Zhongmu NO.1’ had stronger tolerance to salt stress, so they are suitable to be cultivated in alkaline saline areas.

Key words: Alfalfa, Salt stress, Underground indexes, Salt-tolerance evaluation

摘要:

以10个苜蓿(Medicago sativa.)品种为试验材料,在不同Na2CO3浓度下进行耐盐性研究,观察生长初期根颈直径、根颈入土深度、主根直径、侧根直径和侧根位置等根系指标,并进行数据统计与方差分析。结果表明:不同浓度Na2CO3胁迫下,各苜蓿品种的各个指标差异显著;根颈直径和主根直径随着盐浓度的增大而呈逐渐减小趋势,根颈入土深度和侧根位置随盐浓度的增加呈增大趋势,但侧根直径随盐浓度的增大变化趋势不明显;由地下指标综合分析可知在10个苜蓿品种中,耐盐能力较强的为‘驯鹿’和‘中苜1号’,可选择在碱性盐区域种植。

关键词: 苜蓿, 盐胁迫, 地下指标, 耐盐评价

CLC Number: