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

doi:10.11733/j.issn.1007-0435.2017.04.015

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

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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. 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. 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

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 Na₂CO₃solution; 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:

Q945.78
S541

WANG Yun-tao, YU Lin-qing, YUAN Ting, WANG Xiao-jie, XIE Ji-hong. Effects of Na₂CO₃ on Underground Indexes of 10 Alfalfa Cultivars at Initial Stage of Growth[J]. Acta Agrestia Sinica, 2017, 25(4): 790-795.

王运涛, 于林清, 远婷, 王晓杰, 解继红. Na₂CO₃盐胁迫对10个苜蓿品种生长初期地下指标的影响[J]. 草地学报, 2017, 25(4): 790-795.

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

Na₂CO₃盐胁迫对10个苜蓿品种生长初期地下指标的影响

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