Effects of Pb2+, Cd2+ on Germination and Seedling Early Growth of Moso Bamboo (Phyllostachys edulis)Seed

ZHANG Da-peng; CAI Chun-ju; FAN Shao-hui; SU Wen-hui

Taking Phyllostachys edulis seeds as test material, the effects of Pb2+ and Cd2+ on seed germination and seedling early growth were studied. The results indicated that the germination rate increased at first and decreased subsequently with the increasing of Pb2+ and Cd2+ concentrations, and these concentrations negatively affected the germination index and vigor index. Meanwhile, there had an inhibitory action between Pb2+, Cd2+ and roots growth, stems growth and biomass accumulation, and this action was enhanced by the increasing of concentration in solution, especially for seedling roots, the inhibitory ratio could up to 96.20% and 94.00% at most, respectively. Although the increase of Pb2+ and Cd2+ concentrations in solution significantly increased both on the aboveground part and underground part, the accumulation amount underground were much higher than the former. The maximum differences between the aboveground and underground could be up to 27.21 times (for Pb2+) and 6.25 times (for Cd2+) at the same concentrations.

1. International Center for Bamboo and Rattan, Key Laboratory of Science and Technology of Bamboo and Rattan, State Forestry Administration, Beijing 100102, China

Received Date: 2012-03-13

Available Online: 2012-08-20

Abstract: Taking Phyllostachys edulis seeds as test material, the effects of Pb2+ and Cd2+ on seed germination and seedling early growth were studied. The results indicated that the germination rate increased at first and decreased subsequently with the increasing of Pb2+ and Cd2+ concentrations, and these concentrations negatively affected the germination index and vigor index. Meanwhile, there had an inhibitory action between Pb2+, Cd2+ and roots growth, stems growth and biomass accumulation, and this action was enhanced by the increasing of concentration in solution, especially for seedling roots, the inhibitory ratio could up to 96.20% and 94.00% at most, respectively. Although the increase of Pb2+ and Cd2+ concentrations in solution significantly increased both on the aboveground part and underground part, the accumulation amount underground were much higher than the former. The maximum differences between the aboveground and underground could be up to 27.21 times (for Pb2+) and 6.25 times (for Cd2+) at the same concentrations.

HTML

Reference (23)

[1]	Hall J L. Cellular mechanisms for heavy metal detoxification and tolerance[J]. J Exp Bot, 2002, 53 (366): 1-11
[2]	姜培坤,徐秋芳. 不同施肥雷竹林土壤重金属含量的动态分析[J]. 水土保持学报,2002,19(1):168-170,180
[3]	姜培坤,叶正钱,徐秋芳. 高效栽培雷竹林土壤重金属含量的分析研究[J]. 水土保持学报,2003,17(4):61-63,74
[4]	王兵,曹帮华,蔡春菊. 重金属胁迫对2种地被竹抗氧化酶与脂质过氧化的影响[J]. 世界竹藤通讯, 2010,8(4): 14-19
[5]	王兵,曹帮华,蔡春菊,等. 铅镉铜锌复合污染对鹅毛竹生理生化特性的影响[J]. 安徽农学通报,2010,16(3): 34-36,139
[6]	汪奎宏,黄伯惠. 中国毛竹[M]. 杭州:浙江科学技术出版社,1996
[7]	江泽慧. 世界竹藤[M]. 沈阳:辽宁科学技术出版社,2002
[8]	GB2772—1999. 林木种子检验规程[S]. 北京:中国标准出版社,2000
[9]	蔡春菊,刘凤,郭起荣,等. 毛竹种子种质保存对含水量的响应[J]. 江西农业大学学报,2010,32(2):312-317
[10]	蔡春菊,彭镇华,高健,等. 毛竹种子萌发特性研究[J]. 中国农学通报,2008,24(12):163-167
[11]	蔡春菊,高健,牟少华. ⁶⁰Co γ辐射对毛竹种子活力及早期幼苗生长的影响[J]. 核农学报,2007,21(5):436-440
[12]	郑光华. 种子生理研究[M]. 北京:科学出版社,2004:57-67
[13]	宋松泉,程红焱,龙春林,等. 种子生物学研究指南[M]. 北京:科学出版社,2005
[14]	熊双莲,熊治廷. 镉和铅胁迫对雪菜吸收镧的影响[J]. 湖北农业科学,2007,46(1):85-87
[15]	蒋光月,王友保,张莉,等. 铜对狗牙根生长及活性氧清除系统的影响[J]. 草业学报,2007,16(1):53-57
[16]	贾文庆,刘会超,何莉. 盐分胁迫下白三叶种子的发芽特性研究[J]. 草业科学,2007,24(9):55-57
[17]	杨居荣,贺建群,张国祥,等. 作物对Cd²⁺毒害的耐性机理探讨[J]. 应用生态学报,1995,6(1):46-49
[18]	多立安,高玉葆,赵树兰. 重金属递进胁迫对黑麦草初期生长的影响[J] . 植物研究,2006,26(1):117-122
[19]	闰晓明,何金柱,苗青松. 污染土壤植物修复技术研究进展[J]. 中国生态农业学报,2004,12(3):131-133
[20]	张震,徐丽,杨洁,等. 重金属胁迫对高羊茅种子萌发的影响[J]. 中国农学通报,2008,24(4):386-389
[21]	杨金凤,卜玉山,邓红艳. 镉、铅及其复合污染对油菜部分生理指标的影响[J]. 生态学杂志,2009,28 (7) : 1284-1287
[22]	Baker A J M. Accumulators and excluders-strategies in the response of plant to heavy metals [J]. Journal of Plant Nutrition, 1981, 3(1-4): 643-654
[23]	宋玉芳,周启星,许华夏,等. 重金属对土壤中小麦种子发芽与根伸长抑制的生态毒性[J]. 应用生态学报,2002,13(4):459-462

Effects of Pb2+, Cd2+ on Germination and Seedling Early Growth of Moso Bamboo (Phyllostachys edulis)Seed

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Proportional views