| 氯离子和盐基阳离子对蔬菜种子萌发及其幼苗生长的影响 |
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| 引用本文： | 邓晓,武春媛,杨桂生,吴永梅,李勤奋.氯离子和盐基阳离子对蔬菜种子萌发及其幼苗生长的影响[J].中国农学通报,2020,36(16):49-54. |
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| 作者姓名： | 邓晓 武春媛 杨桂生 吴永梅 李勤奋 |
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| 作者单位： | 1.中国热带农业科学院环境与植物保护研究所,海口 571101;2.农业部儋州农业环境科学观测实验站,海南儋州 571737;3.海南省热带生态循环农业重点实验室,海口 571101 |
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| 基金项目： | 中国热带农业科学院基本科研业务费专项资金“滨海盐渍地土壤改良剂基质筛选及其初步应用”(1630042017005);中国热带农业科学院基本科研业务费专项资金“海南滨海盐渍化土壤障碍因子及改良机制”(1630042017006) |
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| 摘 要： | 为研究蔬菜种子对不同盐基离子胁迫的响应问题,以空心菜、辣椒和菜心种子为实验材料,NaCl、KCl、CaCl2和MgCl2 4种盐分作为胁迫因子,探究Cl-及盐基阳离子对蔬菜种子萌发及其幼苗生长的影响。结果表明：（1）在设置的Cl-浓度范围内,低浓度Cl-促进空心菜和辣椒种子萌发及其幼苗生长;而高浓度Cl-却显著抑制空心菜和辣椒种子萌发及其幼苗的生长。菜心种子的萌发及其幼苗生长受盐胁迫的影响表现为,随Cl-浓度升高抑制作用逐渐增强。说明空心菜和辣椒具有一定的适应盐渍土壤环境的能力,而菜心不适应盐渍土壤环境。（2）相同Cl-浓度下,不同盐基阳离子对空心菜和辣椒种子萌发的影响差异不显著;对菜心种子萌发的抑制作用表现为K+最强,Na+最弱。不同盐基阳离子对空心菜幼苗胚根和株高的抑制作用均表现为K+最强,Ca2+最弱;对菜心幼苗胚根和株高的抑制作用表现为Mg2+最强,Na+最弱;对辣椒幼苗胚根的抑制作用表现为Na+最强,Ca2+最弱,而对辣椒幼苗株高的抑制作用又表现为Ca2+最强,K+最弱。说明不同盐基阳离子对蔬菜种子萌发及其幼苗生长的影响因蔬菜品种不同而异。
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| 关 键 词： | 氯离子 盐基阳离子 蔬菜 种子萌发 幼苗生长 |
| 收稿时间： | 2019-04-18 |
Effects of Chloride Ion and Saline Cations on Seed Germination and Seedling Growth of Vegetables |
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| Deng Xiao,Wu Chunyuan,Yang Guisheng,Wu Yongmei,Li Qinfen.Effects of Chloride Ion and Saline Cations on Seed Germination and Seedling Growth of Vegetables[J].Chinese Agricultural Science Bulletin,2020,36(16):49-54. |
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| Authors: | Deng Xiao Wu Chunyuan Yang Guisheng Wu Yongmei Li Qinfen |
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| Institution: | 1.Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101;2.Danzhou Scientific Observing and Experimental Station of Agro-Environment, Ministry of Agriculture, Danzhou Hainan 571737;3.Hainan Key Laboratory of Tropical Eco-Circular Agriculture, Haikou 571101 |
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| Abstract: | The paper aims to study the stress response of vegetable seeds to different saline ions. The seeds of water spinach, pepper and Chinese flowering cabbage were used as experimental materials, and four salts of NaCl, KCl, CaCl2 and MgCl2 were used as stress factors to explore the effects of chloride ion and saline cations on the seed germination and seedling growth of vegetables. The results were as follows. (1) The seed germination and seedling growth of water spinach and pepper were promoted by low concentration of chloride ion, but significantly inhibited by high concentration of chloride ion in the set concentration range of chloride ion. The seed germination and seedling growth of Chinese flowering cabbage were inhibited on salt stress, and the inhibitory effect was gradually enhanced with the increase of salt concentration. This indicated that water spinach and pepper had the ability to adapt to the saline soil environment to a certain extent, while Chinese flowering cabbage could not adapt to the saline soil environment. (2) The effects of different saline cations on the seed germination of water spinach and pepper were not significant under the same chloride ion concentration. The inhibitory effects of those on the seed germination of Chinese flowering cabbage was the strongest in K+ and the weakest in Na+. The inhibitory effects of different saline cations on the radicle and stem height of water spinach seedlings showed that K+ and Ca2+ were the strongest and the weakest respectively. The inhibitory effects of different saline cations on the radicle and stem height of Chinese flowering cabbage seedlings showed that Mg2+ and Na+ were the strongest and the weakest respectively. The inhibitory effects of different saline cations on the radicle height of pepper seedlings indicated that Na+ and Ca2+were the strongest and the weakest respectively, while that on the stem height of pepper seedlings indicated that Ca2+ and K+ were the strongest and the weakest respectively. It is concluded that the effects of different saline cations on seed germination and seedling growth of vegetables vary with vegetable varieties. |
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| Keywords: | chloride ion saline cation vegetable seed germination seedling growth |
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