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兰州大学机构库  > 草地农业科技学院  > 期刊论文
题名: Alleviation of salinity stress on germination of Leymus chinensis seeds by plant growth regulators and nitrogenous compounds under contrasting light/dark conditions
作者: Wu, YP; Chen, F; Hu, XW; Baskin, CC; Baskin, JM
收录类别: SCIE
出版日期: 2016-09
刊名: GRASS AND FORAGE SCIENCE
卷号: 71, 期号:1-3, 页码:497-506
出版者: WILEY
出版地: HOBOKEN
英文摘要: The effects of plant growth regulators (PGRs) and nitrogenous compounds on alleviating salinity stress on seed germination of Leymus chinensis in light (12 h light/12 h dark) and dark (24 h dark) conditions were determined in a laboratory experiment. Seed germination was compared at various combinations of salinity and germination-promoting compounds. Seed germination percentages were 57 and 74% under nonsaline conditions in light and dark, respectively, suggesting that germination was light-inhibited. Germination decreased significantly with increasing salinity level in both light and dark conditions, and the reduction was greater in light than in dark at each salinity level. Seed germination percentage decreased to 22 and 7% in light but only to 51 and 27% in dark, in 100 and 200 mM NaCl solutions respectively. The influence of PGRs and nitrogenous compounds in alleviating salinity stress varied with light and salinity condition; e.g., gibberellins (GA(4 + 7)) significantly increased germination percentages from 22%, 7% and 0.3% to 47%, 23% and 15% in light at 100, 200 and 300 mM NaCl, respectively, while they showed no effect on germination in darkness. In contrast, sodium nitroprusside and cytokinin significantly increased germination percentage in darkness at all salinity levels, but showed no effect on germination in light at 200 and 300 mM NaCl. Fluridone was very effective in alleviating salinity stress on germination in both light and dark; however, it was lethal to seedlings. Thiourea had no effect in alleviating salinity stress in either light or dark. Thus, alleviation of salinity stress on seed germination of L. chinensis by germination-promoting compounds is strongly dependent on chemicals and light conditions.
关键词: abscisic acid ; gibberellin ; light ; salt stress ; seed germination
作者部门: [Wu, Y. P. ; Chen, F. ; Hu, X. W.] Lanzhou Univ, Coll Pastoral Agr Sci & Technol, State Key Lab Grassland Agroecosyst, 768 Jiayuguan West Rd, Lanzhou 730020, Peoples R China ; [Baskin, C. C. ; Baskin, J. M.] Univ Kentucky, Dept Biol, Lexington, KY USA ; [Baskin, C. C.] Univ Kentucky, Dept Plant & Soil Sci, Lexington, KY USA
通讯作者: Hu, XW (reprint author), Lanzhou Univ, Coll Pastoral Agr Sci & Technol, State Key Lab Grassland Agroecosyst, 768 Jiayuguan West Rd, Lanzhou 730020, Peoples R China.
学科分类: Agriculture
文章类型: Article
所属项目编号: Program for Changjiang Scholars and Innovative Research Team in University [IRT13019] ; Special Fund for Agro-scientific Research in the Public Interest [201403048-3] ; National Key Technology Research and Development Program [2011BAD17B02]
所属项目名称: 国家科技支撑计划 ; 公益性行业科研专项 ; 长江学者和创新团队发展计划
项目资助者: MOST ; MOE ; MOA
语种: 英语
DOI: 10.1111/gfs.12179
ISSN号: 0142-5242
WOS记录号: WOS:000387376300014
IR记录号: WOS:000387376300014
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/188797
Appears in Collections:草地农业科技学院_期刊论文

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Recommended Citation:
Wu, YP,Chen, F,Hu, XW,et al. Alleviation of salinity stress on germination of Leymus chinensis seeds by plant growth regulators and nitrogenous compounds under contrasting light/dark conditions[J]. GRASS AND FORAGE SCIENCE,2016,71(1-3):497-506.
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