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当前位置: 首页 > 文章 > 不同发芽基质上盐分胁迫对千穗谷种子萌发的影响 广东农业科学 2014,41 (24) 105-108+113
Position: Home > Articles > Effects of salt stress on seed germination of grain amaranth in different germination substrates Guangdong Agricultural Sciences 2014,41 (24) 105-108+113

不同发芽基质上盐分胁迫对千穗谷种子萌发的影响

作  者：
王红;弓运泽;张瑞芳;张爱军;周大迈
单  位：
河北农业大学河北省山区研究所/河北农业大学国家北方山区农业工程技术研究中心
关键词：
盐分胁迫;种子;千穗谷;发芽基质;萌发
摘  要：
千穗谷(Amaranthus hypochondriacus L.)是优质耐瘠薄牧草资源。为了探讨其种子的耐盐能力,分5个盐分胁迫处理:0、1、2、5、10 g/kg,分别在石英砂基质、海兴盐碱土基质和安国潮褐土基质上,进行发芽试验。结果表明,不同基质上千穗谷发芽率与盐分浓度表现出显著的负相关关系。在石英砂、海兴盐碱土、安国潮褐土基质上,千穗谷与盐分浓度的回归方程斜率分别为-5.77、-8.787、-7.95。千穗谷种子萌发盐分胁迫临界值为海兴盐碱土大于安国潮褐土,分别为3.5、3.4 g/kg;盐分胁迫极限值为安国潮褐土大于海兴盐碱土,分别为8.4、8.1 g/kg。盐分对千穗谷种子萌发及幼苗生长有一定的抑制作用;随着盐分浓度的提高,3种基质上千穗谷种子发芽率均呈下降趋势,幼苗生长状况也呈现同一趋势。
译  名：
Effects of salt stress on seed germination of grain amaranth in different germination substrates
作  者：
WANG Hong;GONG Yun-ze;ZHANG Rui-fang;ZHANG Ai-jun;ZHOU Da-mai;Mountainous Area Research Institute of Hebei Province, Agricultural University of Hebei/National Engineering Research Center for Agriculture in Northern Mountain Areas, Agricultural University of Hebei;
关键词：
salt stress;;seed;;grain amaranth;;germination substrate;;germination
摘  要：
Grain amaranth(Amaranthus hypochondriacus L.) is forage resources and with high quality and barren-resistant. In order to study the salt tolerance of seeds, this paper designed 5 salt stress treatments(0 g/kg,1 g/kg, 2 g/kg, 5g/kg, 10 g/kg), conducted germination test in quartz sand substrate, saline-alkali soil substrate in Haixing and meadow cinnamon soil substrate in Anguo separately. The results showed that, in different substrates, grain amaranth germination rate and salt concentration showed a significant negative correlation, in quartz sand substrate, saline-alkali soil substrate in Haixing and meadow cinnamon soil substrate in Anguo, the regression equation slope of grain amaranth and salt concentration were-5.77,-8.787,-7.95. For the critical value of grain amaranth seed germination under salt stress, the saline-alkali soil in Haixing was larger than that of meadow cinnamon soil in Anguo, they were 3.5 g/kg and 3.4 g/kg,respectively; for the limit value under salt stress, the meadow cinnamon soil in Anguo was larger than that of saline-alkali soil in Haixing, they were 8.4 g/kg and 8.1 g/kg, respectively. Salt had certain inhibitory effect on the seed germination and seedling growth, with the salt concentration increasing, the seed germination rate decreased in the three kinds of substrates,seedling growth also showed the same trend.

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