天津农学院学报 ›› 2012, Vol. 19 ›› Issue (1): 1-6.

• 研究与简报 •    下一篇

种子引发对盐胁迫下玉米种子萌发及幼苗生长的影响

杜锦1, 蒙雨莲2, 向春阳1,通讯作者, 李润枝1, 何丽丽1   

  1. 1. 天津农学院 农学系,天津 300384;
    2. 高银地产(天津)有限公司,天津 300384
  • 收稿日期:2011-11-13 出版日期:2012-03-20 发布日期:2019-11-12
  • 通讯作者: 向春阳(1965-),男,湖北武汉人,教授,博士,主要从事玉米遗传育种和种子检验方面的研究。联系电话:(022)23781298,E-mail:xxccyy2000@sohu.com。
  • 作者简介:杜锦(1984-),男,山西阳泉人,助理实验师,硕士,主要从事玉米遗传育种的研究。联系电话:(022)23781298,E-mail:dujin@tjau.edu.cn。
  • 基金资助:
    天津市科技攻关项目“饲用高油玉米相关性状的遗传研究及新品种选育”(06YFGZNC01200)

Effect of Seed Priming on Maize (Zea mays L.)Seed Germination and Seedling Growth under Salt Stress

DU Jin1, MENG Yu-lian2, XIANG Chun-yang1 Corresponding Author, , LI Run-zhi1, HE Li-li1   

  1. 1. Department of Agronomy, Tianjin Agricultural University, Tianjin 300384, China;
    2. Goldin Properties Holdings Limited Company, Tianjin 300384, China
  • Received:2011-11-13 Online:2012-03-20 Published:2019-11-12

摘要: 以A060233×D123-42(T,耐盐性较强)和D168-83×A06148(S,耐盐性较弱)两个玉米杂交组合为实验材料,利用80 mmol·L-1 NaCl溶液对种子进行引发处理。采用营养液砂培实验,设4个NaCl浓度(0、120、200和250 mmol·L-1)模拟盐胁迫,研究种子引发处理对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,无论经引发处理,还是未经引发处理,两个玉米杂交组合的出苗率均下降,幼苗生长均受到抑制,干物质积累量均减少。同等NaCl浓度胁迫下,引发处理与未引发处理相比,种子出苗率增加,促进了苗高和根的生长,叶面积、苗干重、根干重和耐盐指数增加,叶绿素和脯氨酸含量升高,地上部和地下部的K+/Na+值增加。

关键词: 玉米, 种子引发, NaCl胁迫, 种子萌发, 幼苗生长

Abstract: Seeds of two maize (Zea mays L.) hybrid combinations of A060233×D123-42 (T, a high salt-tolerant cross combination) and D168-83×A06148(S,a salt-susceptible cross combination)were primed with 80 mmol·L-1 NaCl. The primed seeds were subjected to salt stress of 4 NaCl concentrations(0、120、200 and 250 mmol·L-1) in a sand culture experiment. The effects of the seed priming and NaCl stress on seed germination and seedling growth under salt stress were investigated. The results show that with or without priming, seed emergence rate declined. The growth of seedling was inhibited while the accumulation of dry weight reduced. Compared with unprimed seeds under the same NaCl concentration, primed seeds had higher emergence rate, higher height of seedlings and length of roots, higher leaf areas, higher dry weight of seedlings and dry weight of roots, higher salt resistance index, higher contents of chlorophyll and proline, higher ratio of K+/Na+in shoots and roots of seedlings.

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

中图分类号: