中国水稻科学

中国水稻科学 ›› 2014, Vol. 28 ›› Issue (1): 57-64.DOI: 10.3969/j.issn.1001-7216.2014.01.008

• 研究报告 • 上一篇    下一篇

杂交水稻不同器官重金属铅浓度与累积量

陈新红1,* ,叶玉秀1 ,潘国庆1,赵步洪2,杨建昌3   

  1. 1淮阴工学院 生化学院， 江苏 淮安 223003；2江苏省里下河地区农业科学研究所, 江苏 扬州225007；3扬州大学 江苏省作物遗传生理重点实验室, 江苏 扬州225009；
  • 收稿日期:2013-05-24 修回日期:2013-07-21 出版日期:2014-01-10 发布日期:2014-01-10
  • 通讯作者: 陈新红1,*,
  • 基金资助:

    国家自然科学基金资助项目（31171481）；江苏省科技创新与成果转化专项引导资金项目（BE2012445）。

Concentration  and Accumulation of Lead in Different Organs of Hybrid Rice

CHEN Xinhong 1,* , YE Yuxiu 1 , PAN Guoqing 1 , ZHAO Buhong 2 , YANG Jianchang 3   

  1. 1College of Life Sciences and Engineering, Huaiyin Institute of Technology, Huaian 223003, China;  2 Lixiahe Region Agricultural Research Institute of Jiangsu, Yangzhou 225007, China;3 Key Laboratory of Crop Genetics and Physiology of Jiangsu Province, Yangzhou University, Yangzhou 225009, China;
  • Received:2013-05-24 Revised:2013-07-21 Online:2014-01-10 Published:2014-01-10
  • Contact: CHEN Xinhong1,*,

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被引次数

59

摘要： 以生长于盆钵中的两系杂交稻和三系杂交稻共6个组合为试验材料，设置土壤铅(Pb)浓度为500 mg/kg和不加Pb土壤（对照）两个处理，测定水稻植株不同器官Pb的浓度和累积量。结果表明，Pb处理降低了两优培九、103S/郑粳2号、丰优香占和汕优63的产量，主要是每穗粒数减少，对其余组合的产量无显著影响；不同基因型水稻植株对Pb吸收与积累存在差异，以103S/郑粳2号和两优培九累积量最多，K优818累积量最少；水稻植株不同器官Pb的浓度和累积量的大小顺序为根> 茎鞘> 叶片。籽粒不同部位Pb的浓度大小顺序为糠层> 颖壳> 精米，精米中Pb累积量仅为谷粒的25%左右，精米中Pb的浓度以103S/郑粳2号最高，K优818最低；在抽穗期和成熟期，同一器官Pb浓度与累积量呈显著或极显著正相关，但不同器官之间的相关不显著。对不同杂交稻组合植株中Pb浓度和累积量差异的原因进行了讨论。

关键词: 杂交水稻, 铅, 浓度, 累积量, 分布

Abstract: The concentration and accumulation of Pb in different rice plant organs were measured in a potculture experiment at soil lead concentrations of 0 mg/kg(CK) and 500 mg/kg with six hybrid rice as materials. The results showed that Pb addition significantly reduced the grain yield of Liangyoupeijiu, 103S/Zhengjing 2, Fengyouxiangzhan and Shanyou 63 due to the reduction of spikelet number per panicle. There was no significant effect on grain yield for other hybrid rice combinations. Significant differences in uptake and accumulation of Pb were observed among the six combinations, with 103S/Zhengjing 2 and Liangyoupeijiu having the highest and K you 818 the lowest Pb accumulation in plants. Concentration or accumulation of Pb in various plant organs followed the order of root> culm and sheath> leaf, and Pb concentration in grains followed the order of bran> hull>milled rice. Pb in milled rice accounted for 25% of the total amount of Pb accumulated in grains. The concentration and accumulation of Pb in the same organ at heading and maturity stages were positively and significantly correlated, but the correlation was not significant between different organs. Among the six hybrids, Yangliangyou 6 contained the highest, and K you 818 the lowest Pb concentration in milled rice. The reasons for variations of Pb concentration and accumulation in plants among the hybrids were also discussed. 

Key words: hybrid rice, lead, concentration, accumulation, distribution

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