Phytotoxicity of arsenate and salinity on early seedling growth of rice (Oryza sativa L.): A threat to sustainable rice cultivation in South and South-East Asia

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dc.contributor.author Rahman, Mohammad en_US
dc.contributor.author Maki, Teruya en_US
dc.contributor.author Hasegawa, Hiroshi en_US
dc.contributor.editor en_US
dc.date.accessioned 2012-10-12T03:33:05Z
dc.date.available 2012-10-12T03:33:05Z
dc.date.issued 2012 en_US
dc.identifier 2011003651 en_US
dc.identifier.citation Rahman Mohammad et al. 2012, 'Phytotoxicity of arsenate and salinity on early seedling growth of rice (Oryza sativa L.): A threat to sustainable rice cultivation in South and South-East Asia', Springer, vol. 88, no. 5, pp. 695-702. en_US
dc.identifier.issn 0007-4861 en_US
dc.identifier.other C1 en_US
dc.identifier.uri http://hdl.handle.net/10453/18041
dc.description.abstract Arsenic (As) contamination is an important environmental consequence in some parts of salinity-affected South (S) and South-East (SE) Asia. In this study, we investigated the individual and combined phytotoxicity of arsenic (As) [arsenate; As(V)] and salinity (NaCl) on early seedling growth (ESG) of saline-tolerant and non-tolerant rice varieties. Germination percentage (GP), germination speed (GS) and vigor index (VI) of both saline-tolerant and non-tolerant rice varieties decreased significantly (p[0.01) with increasing As(V) and NaCl concentrations. The highest GP(91%) was observed for saline non-tolerant BRRI dhan28 and BRRI dhan49, while the lowest (62%) was for salinetolerant BRRI dhan47. The ESG parameters, such as weights and relative lengths of plumule and radicle, also decreased significantly (p\0.01) with increasing As(V) and NaCl concentrations. Relative radicle length was more affected than plumule length by As(V) and NaCl. Although VI of saline-tolerant and non-tolerant rice seedlings showed significant variation (p\0.05), weights and lengths of plumule and radicle of different rice varieties did not show significant variation for As(V) and NaCl treatments. Results reveal that the combined phytotoxicity of As(V) and NaCl on rice seed germination and ESG are greater than their individual toxicities, and some saline-tolerant rice varieties are more resistant to the combined phytotoxicity of As(V) and NaCl than the saline non-tolerant varieties. en_US
dc.language en_US
dc.publisher Springer en_US
dc.relation.hasversion Accepted manuscript version en_US
dc.relation.isbasedon http://dx.doi.org/10.1007/s00128-012-0580-4 en_US
dc.rights The original publication is available at www.springerlink.com en_US
dc.title Phytotoxicity of arsenate and salinity on early seedling growth of rice (Oryza sativa L.): A threat to sustainable rice cultivation in South and South-East Asia en_US
dc.parent Bulletin Of Environmental Contamination And Toxicology en_US
dc.journal.volume 88 en_US
dc.journal.number 5 en_US
dc.publocation United States en_US
dc.identifier.startpage 695 en_US
dc.identifier.endpage 702 en_US
dc.cauo.name SCI.Faculty of Science en_US
dc.conference Verified OK en_US
dc.for 030000 en_US
dc.personcode 112851 en_US
dc.personcode 0000076203 en_US
dc.personcode 0000070288 en_US
dc.percentage 34 en_US
dc.classification.name Chemical Science en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US
dc.date.activity en_US
dc.location.activity en_US
dc.description.keywords Rice; Arsenic; Salinity; Phytotoxicity; SALT STRESS; FOOD-CHAIN; GROUNDWATER; BANGLADESH; ACCUMULATION; ARSENITE; TOXICITY; CONTAMINATION; GERMINATION; TOLERANCE en_US


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