摘要
通过对不同质量分数NaCl胁迫(0、0.2%、0.4%、0.6%、0.8%、1.0%、1.2%、1.4%)处理下同德小花碱茅Puccinellia tenuifloracv.Tongde幼苗生理指标的测定,定量分析其抗盐特性。结果表明,NaCl处理后,同德小花碱茅叶片中的相对含水量和丙二醛含量随着胁迫程度的增大呈下降趋势,处理和对照之间的差异达到显著水平;而叶绿素含量、可溶性蛋白和脯氨酸的含量随着胁迫程度的增大呈增加趋势,且对照与低程度处理间的差异不显著,与高程度处理间的差异达显著水平,说明同德小花碱茅是一种耐盐性较强的牧草,适宜盐碱地改良中推广种植。
The salt tolerance of Puccinellia tenuiflora cv. Tongde seedling under different NaCl treatments （0, 0.2%, 0.4%, 0.6%, 0.8%, 1.0%, 1.2% and 1.4%） was identified by determining the physiological indices. The results showed that the contents of RWS and MDA decreased with NaCl concentration increasing, and the difference of RWS or MDA contents was significant among treat- ments. The contents of chlorophyll, soluble protein and proline increased with the increasing of salt concentration and the difference between the lower NaCI treatments and CK was not significant, however, tit was significant between the higher NaCl treatments and CK. This suggested that P. tenuiflora cv. Tongde was salt-tolerant and could be extended in salinity soil.
出处
《草业科学》
CAS
CSCD
北大核心
2009年第6期101-105,共5页
Pratacultural Science
基金
国家农业部"青藏高原牧草种质资源保护利用"项目(070401)
国家农业部"牧草植物种质资源标准化整理
整合及共享协作课题"(DNA21007-14)
国家农业部行业专项"人工草地优质牧草生产技术研究与示范(协作课题)"(nyhyzx07-009-5)
关键词
盐胁迫
同德小花碱茅
苗期
生理特性
salt stress
Puccinellia tenuiflora cv. Tongde
seedling stage
physiological chrematistics
