M. A. Bacarin, S. Deuner, F. V. D. Silva, D. Cassol, Diolina Moura Silva
{"title":"Chlorophyll a fluorescence as indicative of the salt stress on Brassica napus L.","authors":"M. A. Bacarin, S. Deuner, F. V. D. Silva, D. Cassol, Diolina Moura Silva","doi":"10.1590/S1677-04202011000400001","DOIUrl":null,"url":null,"abstract":"The effects of salinity stress on chlorophyll fluorescence and the growth of Brassica napus L were investigated. The chlorophyll a fluorescence transient were recorded and analyzed according to the JIP-test which can quantify PSII performance. Salt stress resulted in decreased leaf area and dry matter compared with the control treatment (0 mM NaCl). The most pronounced effects of salt stress were observed with 200 mM NaCl, and the hybrids displayed different levels of sensitivity to stress. The Performance Index (PIABS) was the most sensitive parameter to salt stress, which suggests that this parameter can be used to screen genotypes for salt tolerance.","PeriodicalId":9278,"journal":{"name":"Brazilian Journal of Plant Physiology","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2011-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"33","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Brazilian Journal of Plant Physiology","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1590/S1677-04202011000400001","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 33
Abstract
The effects of salinity stress on chlorophyll fluorescence and the growth of Brassica napus L were investigated. The chlorophyll a fluorescence transient were recorded and analyzed according to the JIP-test which can quantify PSII performance. Salt stress resulted in decreased leaf area and dry matter compared with the control treatment (0 mM NaCl). The most pronounced effects of salt stress were observed with 200 mM NaCl, and the hybrids displayed different levels of sensitivity to stress. The Performance Index (PIABS) was the most sensitive parameter to salt stress, which suggests that this parameter can be used to screen genotypes for salt tolerance.
研究了盐胁迫对甘蓝型油菜叶绿素荧光及生长的影响。根据jip测试记录并分析了叶绿素a荧光瞬态，该测试可以量化PSII的性能。与对照处理(0 mM NaCl)相比，盐胁迫导致叶片面积和干物质减少。以200 mM NaCl处理对盐胁迫的影响最为显著，杂种对盐胁迫表现出不同程度的敏感性。性能指数(PIABS)是对盐胁迫最敏感的参数，可以用来筛选耐盐基因型。
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