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镉对水稻种子萌发的影响

曾翔1,2;张玉烛1;王凯荣3;李小湘1;段永红1;谢建红1;张岳平1,2;屠乃美2   

  1. 1湖南省水稻研究所, 长沙 410125;2湖南农业大学农学院,长沙 410128;3青岛农业大学农业生态与环境健康研究所, 山东青岛 266109
  • 收稿日期:2006-06-24 修回日期:1900-01-01 出版日期:2007-07-16 发布日期:2007-07-16

Effects of cadmium on rice seed germination.

ZENG Xiang1;ZHANG Yu-zhu1;WANG Kai-rong3;LI Xiao-xiang1;DUAN Yong-hong1;XIE Jian-hong1;ZHANG Yue-ping1,2;TU Nai-mei2   

  1. 1Hunan Institute of Rice Research, Changsha 410125, China;2Hunan Agricultural University, Changsha 410128, China;3Institute of Agricultural Ecology and Environmental Health, Qingdao Agricultural University, Qingdao 266109, Shandong, China
  • Received:2006-06-24 Revised:1900-01-01 Online:2007-07-16 Published:2007-07-16

摘要: 以不同类型的319个水稻品种为研究对象,研究了10 mg·L-1 Cd2+处理对水稻种子萌发的影响.结果表明:Cd2+对种子发芽率影响较小,对根系生长的影响显著,且大于对芽生长的影响;不同类型水稻种子萌发对Cd的响应差异较大,敏感顺序为粳稻>籼稻>杂交稻;两系不育系根系长度和根系数量受Cd的抑制程度显著高于三系.应用快速聚类方法,可以将参试品种划分为耐受型、中间型和敏感型3种不同的敏感类型.

关键词: 培肥措施, 节水增产, 土壤水分

Abstract: With 319 rice varieties as test objects, this paper studied the effects of cadmium on their seed germination. The results showed that after treated with 10 mg·L-1 of Cd2+, seed germination rate was less affected, but root growth was restrained evidently. Cadmium had more serious impact on root than on sprout. Different rice varieties had different germination responses to Cd2+, with the sequence of conventional rice (Japonica rice) > hybrid rice (Indianica rice) > conventional rice (Indianica rice). The root length and number of two-line sterilities were restrained more strongly than those of three-line sterilities. Based on their responses to Cd2+, the test 319 varieties were clustered into 3 types, i. e. , endurant type, medium type, and sensitive type.

Key words: Soil fertility increasing ways, Yield increasing and water saving, Soil water