草业科学2011，Vol.28Issue(12)：2136-2142,7.
盐胁迫对虉草种子萌发与幼苗生理生化的影响
Effect of NaCl stress on seed germination and physiological and biochemical characteristics of seedlings of Phalaris arundinacea
摘要
Abstract
An experiment was conducted to determine the effect of NaCl stress on seed germination and physiological and biochemical characteristics of seedlings of 6 accessions Phalaris arundinacea by measuring seed germination rate,fresh weight,shoot length,root length,proline content,chlorophyll and malonaldehyde（MDA） content.The NaCl stress consisted of 0（CK）,50,100,150,200 and 250 mmol/L.The results of this study showed that lower NaCl concentration did not significantly affected seed germination and seedling growth of P.arundinacea;however,the germination rate,fresh weight,shoot length,root length and chlorophyll content of P.arundinacea decreased,and the proline content significantly increased,and MDA content decreased firstly decreased and then increased as the NaCl concentration increased.This study indicated that 6 accessions of P.arundinacea had the different salt tolerance in seed germination and physiological property of seedling,in which Zxy06p-2449 and Zxy06p-1904 were the strongest salt tolerant,and Zxy06p-2380 and Zxy06p-2633 were intermediate,and Zxy06p-2262 and Zxy06p-1916 were sensitive to salt stress.关键词
NaCl胁迫/虉草/种子萌发/脯氨酸/丙二醛/叶绿素Key words
NaCl stress/Phalaris arundinacea/germination/proline/MDA/chlorophyll分类
农业科技引用本文复制引用
丛丽丽,张蕴薇,陈新,李永祥,张新全..盐胁迫对虉草种子萌发与幼苗生理生化的影响[J].草业科学,2011,28(12):2136-2142,7.基金项目
科技支撑2009BADA7B04 （）
“973”课题 （）
国家现代牧草产业技术体系 （）
北京市重点实验室 （）
