草业科学2016，Vol.33Issue(9)：1747-1756,10.DOI:10.11829/j.issn.1001-0629.2015-0326
温度、PEG和NaCl对3种胡枝子种子萌发和幼苗生长的影响
Effects of temperature,PEG and NaCl treatments on seed germination and seedling growth of three Lespedeza species
摘要
Abstract
The seed germination percentage,germination index,radical length and seedling length of Lespedeza davurica cv.Longdong,L.hedysaroides cv.Keerqin and L.potanimii were measured under treatments with temperature,PEG and NaCl stress.The results showed that 20/30 ℃ was the most suitable temperature for the three Lespedeza species.PEG stress had great influence on seed germination index and seedling length.L. davurica cv.Longdong and L.potanimii had the better performance under drought tolerance stress.The ger-mination index,radical length and seedling length of these three species seeds significantly decreasing under NaCl stress treatment.L.potanimii showed the best performance under NaCl stress treatment.L.potanimii Vass.was selected as the best accession with drought and salt stress tolerance by comprehensive evaluation, which will provide the insight for germplasm cultivation and genetic breeding for new varieties.关键词
胡枝子/温度/PEG/NaCl/种子萌发Key words
Lespedeza/temperature/PEG/NaCl stress/seed germination分类
农业科技引用本文复制引用
刘鸿芳,汪永平,骆凯,余玲,张宝林,塔拉腾,刘晓燕,张吉宇..温度、PEG和NaCl对3种胡枝子种子萌发和幼苗生长的影响[J].草业科学,2016,33(9):1747-1756,10.基金项目
科技部“973”课题(2014CB138704) （2014CB138704）
国家自然科学基金(31572453) （31572453）
公益性行业科研专项(201403048-3、20120304205) （201403048-3、20120304205）
