SA和PEG引发处理对NaCl胁迫下玉米种子萌发及幼苗生长的影响

天津农学院学报 ›› 2013, Vol. 20 ›› Issue (2): 30-34.

SA和PEG引发处理对NaCl胁迫下玉米种子萌发及幼苗生长的影响

赵淑婷, 李国溶, 向春阳, 杜锦^通信作者

天津农学院农学系,天津 300384

收稿日期:2013-03-31 发布日期:2019-10-18
通讯作者: 杜锦（1984-）,男,山西阳泉人,实验师,硕士,主要从事玉米遗传育种和种子生理生化方面研究。E-mail：401558171@qq.com。
作者简介:赵淑婷（1991-）,女,云南昆明人,本科在读,主要从事种子引发相关研究。E-mail：1572831596@qq.com。
基金资助:
天津农学院大学生科技创新活动项目“不同物质引发对NaCl胁迫下玉米种子萌发及幼苗生长的影响”（无编号）

Effects of Seed Priming with SA and PEG on maize （Zea mays L.） Seed Germination and Seedling Growth under NaCl Stress

ZHAO Shu-ting, LI Guo-rong, XIANG Chun-yang, DU Jin^{Corresponding Author}

Department of Agronomy, Tianjin Agricultural University, Tianjin 300384, China

Received:2013-03-31 Published:2019-10-18

摘要/Abstract

摘要： 以冀植五号玉米种子为试验材料,用不同浓度的水杨酸（SA）溶液及聚乙二醇（PEG）溶液对种子进行引发处理。采用标准发芽试验和砂培试验,设3个NaCl浓度（0、100、200 mmol·L^-1）模拟盐胁迫,研究SA和PEG引发处理对NaCl胁迫下玉米种子萌发及幼苗生长的影响。结果表明：随着NaCl浓度的增加,玉米的发芽率及发芽势下降,幼苗生长受到抑制,干物质积累量减少。同等NaCl浓度胁迫下,用0.25 mmol·L^-1SA和15%PEG引发处理玉米种子,和对照相比,提高了种子的发芽势及发芽率,苗高、根长、地上部和根部干重显著增加,最终提高了玉米芽苗期的耐盐性。

关键词: 玉米, 种子引发, NaCl胁迫, 种子萌发, 幼苗生长

Abstract: Seeds of maize（Zea mays L.） Jizhi No. 5 were primed with SA and PEG of different concentrations. The primed seeds were subjected to salt stress of 3 NaCl concentrations（0, 100, 200 mmol·L^-1） in standard germination test and a sand culture experiment. The effects of the seed priming with SA and PEG on seed germination and seedling growth under salt stress were investigated. The results show that the seed emergence energy and the emergence rate declined with the increase of NaCl concentration, the growth of seedlings was inhibited, and the accumulation of dry weight reduced. Compared with the control under the same NaCl concentration, the primed seeds with 0.25 mmol·L^-1SA and 15% PEG had higher emergence energy and rate, higher height of seedlings and length of roots, higher dry weight of seedlings and dry weight of roots, so the salt resistance of maize at germination and seedling stages was improved.

Key words: maize, seed priming, NaCl stress, seed germination, seedling growth

中图分类号:

S513

赵淑婷, 李国溶, 向春阳, 杜锦. SA和PEG引发处理对NaCl胁迫下玉米种子萌发及幼苗生长的影响[J]. 天津农学院学报, 2013, 20(2): 30-34.

ZHAO Shu-ting, LI Guo-rong, XIANG Chun-yang, DU Jin. Effects of Seed Priming with SA and PEG on maize （Zea mays L.） Seed Germination and Seedling Growth under NaCl Stress[J]. Journal of Tianjin Agricultural University, 2013, 20(2): 30-34.

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