欢迎访问《中国农学通报》，
中国农学通报

中国农学通报 ›› 2015, Vol. 31 ›› Issue (6): 15-20.doi: 10.11924/j.issn.1000-6850.2014-2105

所属专题： 水稻

• 农学 农业基础科学 • 上一篇    下一篇

晚稻品种种子萌发期耐酸性比较研究

郭莉莉,陈平平,唐 琨,袁珍贵,朱伟文,杨 晶,易镇邪,屠乃美   

  1. (湖南农业大学农学院,长沙 410128）
  • 收稿日期:2014-08-01 修回日期:2014-08-01 接受日期:2014-09-05 出版日期:2015-03-20 发布日期:2015-03-20
  • 通讯作者: 易镇邪
  • 基金资助:
    国家自然科学基金项目“土壤酸化对双季稻氮素利用效率的影响机制研究”(31171494)；国家科技支撑计划项目“长江中游南部（湖南）双季稻持续丰产高效技术集成创新与示范”(2011BAD16B01)。

Comparison on Acid-tolerance of Late Rice Varieties at Seed Germination Stage

Guo Lili, Chen Pingping, Tang Kun, Yuan Zhengui, Zhu Weiwen, Yang Jing, Yi Zhenxie, Tu Naimei   

  1. (College of Agronomy, Hunan Agricultural University, Changsha 410128)
  • Received:2014-08-01 Revised:2014-08-01 Accepted:2014-09-05 Online:2015-03-20 Published:2015-03-20

摘要： 为了给酸化稻田适宜晚稻品种选择提供参考，通过室内发芽试验考察了25个晚稻品种（品系）在6个pH梯度下的发芽率、发芽势和单苗鲜重，比较研究了其种子萌发期耐酸性差异。结果表明：（1）品种间发芽率、发芽势、单苗鲜重差异很大，其中3号、7号、10号、15号品种较高，18号、19号、21号、22号品种较低；（2）6号、11号、12号、13号、14号、16号、19号、21号、23号、24号、25号品种的发芽率、发芽势和单苗鲜重在6个pH梯度处理下变化幅度较大，被初步判定为酸性敏感型品种；（3）2号、3号、5号、10号、15号、17号品种的发芽率、发芽势和单苗鲜重在6个pH梯度处理下变化幅度较小，被初步判定为酸性迟钝型品种。种子萌发期耐酸性比较，可为初步筛选酸化稻田适宜水稻品种提供重要参考。

关键词: 变化特征, 变化特征

Abstract: To provide reference for selecting suitable late rice varieties for acidified paddy field, a germination experiment was conducted under 6 pH levels to compare the acid-tolerance of 25 late rice varieties at seed germination period by examining the germination rate, seed germination potential and fresh weight per seedling. The results showed that: (1) there were clear difference in germination rate, seed germination potential and fresh weight per seedling among varieties, in which those of No.3, 7, 10 and 15 variety were higher, and those of No.18, 19, 21 and 22 variety were lower; (2) the change extent of germination rate, seed germination potential and fresh weight per seedling of No. 6, 11, 12, 13, 14, 16, 19, 21, 23, 24 and 25 under 6 pH levels were bigger, so these varieties belonged to acid-sensitive varieties; (3) the change extent of germination rate, seed germination potential and fresh weight per seedling of No. 2, 3, 5, 10, 15 and 17 under 6 pH levels were smaller, so these varieties belonged to acid non-sensitive varieties. Comparison on acid-tolerance of seeds at germination stage can provide important reference for preliminary screening of suitable rice varieties for acidified paddy field.