<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0120-2812</journal-id>
<journal-title><![CDATA[Acta Agronómica]]></journal-title>
<abbrev-journal-title><![CDATA[Acta Agron.]]></abbrev-journal-title>
<issn>0120-2812</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional de Colombia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0120-28122019000200092</article-id>
<article-id pub-id-type="doi">10.15446/acag.v68n2.77859</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Potencial de Zantedeschia aethiopica L. para la rehabilitación de suelos contaminados con cromo hexavalente en zonas alto andinas de Ecuador]]></article-title>
<article-title xml:lang="en"><![CDATA[Potential of Zantedeschia aethiopica L. for rehabilitation of soil contaminated with hexavalent chromium in high Andean areas of Ecuador]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Beltrán-Dávalos]]></surname>
<given-names><![CDATA[Andrés Agustín]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rosero-Erazo]]></surname>
<given-names><![CDATA[Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cargua-Catagña]]></surname>
<given-names><![CDATA[Franklin]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Echeverría]]></surname>
<given-names><![CDATA[Magdy]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
<xref ref-type="aff" rid="A a"/>
<xref ref-type="aff" rid="A3"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Group of Research and Development for the Environment and Climate Change  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="Af2">
<institution><![CDATA[,Renewable Energy and the Environment Research Center  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="Af3">
<institution><![CDATA[,Escuela Superior Politécnica de Chimborazo  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Ecuador</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2019</year>
</pub-date>
<volume>68</volume>
<numero>2</numero>
<fpage>92</fpage>
<lpage>98</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-28122019000200092&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-28122019000200092&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-28122019000200092&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Zantedeschia aethiopica L. (Lirio de agua) es una planta vascular ornamental, protectora de humedales y sistemas fluviales con alta distribución en la zona Andina del Ecuador. El objetivo de este trabajo fue evaluar el efecto tóxico del cromo VI (Cr+6) en esta planta, reconociendo sus limitaciones como bioindicadora, para lo cual se determinaron los efectos fisiológicos específicos y no específicos, entre ellos: germinación relativa de semillas (GRS), elongación radicular relativa (ERR) e índice de germinación, en unidades experimentales consistentes en concentraciones de 0, 50, 100, 200 y 300 mg/kg de Cr+6 durante 168 h. Las observaciones fueron realizadas durante 20 semanas en la etapa de germinación en plantas cultivadas en suelo contaminado en condiciones semicontroladas de temperatura, humedad y capacidad de campo. Para determinar el Factor de Bioconcentración (FBC), en poscosecha se utilizaron los índices de traslocación (IT) como concentraciones del metal en la parte aérea de la planta (tallo, hojas y flores) y en el suelo. Los resultados mostraron toxicidad similar de Cr+6 en concentraciones de 100, 200 y 300 mg/kg en la etapa de germinación y con efectos fisiológicos no específicos en el crecimiento de la planta en concentraciones de 200 y 300 mg/kg presentando ausencia de floración, enanismo y marchitamiento. Los resultados mostraron un límite CL50 de 118.96 mg/kg-de Cr+6 en el cual la planta es una especie bioacumuladora y bioindicadora de este metal.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Zantedeschia aethiopica is one of the ornamental vascular plants, protective of wetlands and fluvial systems with greater distribution in the Andean zone of Ecuador. The objective of the research was to evaluate the toxic effect of Chromium VI in Zantedeschia aethiopica L. recognizing its limitations as a bioindicator plant, for which specific and non-specific physiological effects were determined such as relative seed germination (RSG), root elongation relative (ERR) and germination index in experimental units exposed to concentrations of 0, 50, 100, 200 and 300 mg.kg-1 of Cr+6 during 168 hours; then monitoring the growth of the plant grown in contaminated soil under the concentrations of the germination stage under semi-controlled conditions of temperature, humidity and field capacity for 20 weeks; in the postharvest, analysis of the concentrations of the metal in the aerial zone of the plant (stem, leaves, and flowers) and root were carried out for the determination of the translocation index (TI) and soil for the evaluation of the Bioconcentration Factor (BCF). The results indicated the toxicity of Cr+6 in concentrations of 100, 200 and 300 mg.kg-1 with similar statistical behavior (P&lt;0,05) in the germination stage and with non-specific physiological effects on the growth of the plant at concentrations of 200 and 300 mg.kg-1 showing absent flowering, dwarfing and wilting. With the obtained results and applying a bivariate Probit statistical analysis with a 95% reliability, the LC50 was determined in 118.96 mg.kg-1 of Cr+6 limit in which the plant can be a bioaccumulative and bioindicator species at concentrations higher than 200 mg.kg-1.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Elongación radicular relativa]]></kwd>
<kwd lng="es"><![CDATA[cromo hexavalente]]></kwd>
<kwd lng="es"><![CDATA[índice de germinación]]></kwd>
<kwd lng="es"><![CDATA[Zantedeschia aethiopica L, factor de bioconcentración (FBC)]]></kwd>
<kwd lng="en"><![CDATA[Relative radicular elongation]]></kwd>
<kwd lng="en"><![CDATA[hexavalent chromium]]></kwd>
<kwd lng="en"><![CDATA[germination index]]></kwd>
<kwd lng="en"><![CDATA[Zantedeschia aethiopica L.]]></kwd>
<kwd lng="en"><![CDATA[Bioconcentration factor (BFC)]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Alvear]]></surname>
<given-names><![CDATA[N. G.]]></given-names>
</name>
<name>
<surname><![CDATA[Abad-Terán]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Análisis preliminar de la fitotoxicidad del material particulado sedimentable de la zona urbana de Cuenca]]></article-title>
<source><![CDATA[Maskana]]></source>
<year>2015</year>
<volume>6</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>95-105</page-range></nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Arias-Trinidad]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Rivera-Cruz]]></surname>
<given-names><![CDATA[M. D. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Trujillo Narcía]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Fitotoxicidad de un suelo contaminado con petróleo fresco sobre Phaseolus vulgaris l. (leguminosae)]]></article-title>
<source><![CDATA[Revista Internacional de Contaminación Ambiental]]></source>
<year>2017</year>
<volume>33</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>411-9</page-range></nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="">
<collab>Asamblea Constituyente</collab>
<source><![CDATA[Constitución de la República del Ecuador. Registro Oficial - Órgano Del Gobierno Del Ecuador]]></source>
<year>2008</year>
<page-range>218 Páginas</page-range></nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bagur-González]]></surname>
<given-names><![CDATA[M. G.]]></given-names>
</name>
<name>
<surname><![CDATA[Estepa-Molina]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Martín- Peinado]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Morales-Ruano]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Toxicity assessment using Lactuca sativa L. bioassay of the metal(loid)s As, Cu, Mn, Pb and Zn in soluble-in- water saturated soil extracts from an abandoned mining site]]></article-title>
<source><![CDATA[Journal of Soils and Sediments]]></source>
<year>2011</year>
<volume>11</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>281-9</page-range></nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Benito-Giardina]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Heredia]]></surname>
<given-names><![CDATA[O. S.]]></given-names>
</name>
<name>
<surname><![CDATA[Castro]]></surname>
<given-names><![CDATA[M. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Effron]]></surname>
<given-names><![CDATA[D. N]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Fitotoxicidad del cromo sobre Phaseolus vulgaris L]]></article-title>
<source><![CDATA[Agronomía y Ambiente]]></source>
<year>2012</year>
<volume>32</volume>
<numero>1-2</numero>
<issue>1-2</issue>
<page-range>75-80</page-range></nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Boffe]]></surname>
<given-names><![CDATA[P. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Calegari]]></surname>
<given-names><![CDATA[R. P.]]></given-names>
</name>
<name>
<surname><![CDATA[de Souza]]></surname>
<given-names><![CDATA[D. C. R.]]></given-names>
</name>
<name>
<surname><![CDATA[da Conceigáo]]></surname>
<given-names><![CDATA[P. S.]]></given-names>
</name>
<name>
<surname><![CDATA[Szymczak]]></surname>
<given-names><![CDATA[D. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Tessaro]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Potencial fitoextrator da espécie vegetal Helianthus annuus L. Em solo contaminado por chumbo]]></article-title>
<source><![CDATA[Espacios]]></source>
<year>2017</year>
<volume>38</volume>
<numero>9</numero>
<issue>9</issue>
<page-range>8-18</page-range></nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Casierra-Posada]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Blanke]]></surname>
<given-names><![CDATA[M. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Guerrero-Guío]]></surname>
<given-names><![CDATA[J. C]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Iron Tolerance in Calla Lilies (Zantedeschia aethiopica)]]></article-title>
<source><![CDATA[Gesunde Pflanzen]]></source>
<year>2014</year>
<volume>66</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>63-8</page-range></nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Costa]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Toxicity and carcinogenicity of Cr(VI) in animal models and humans]]></article-title>
<source><![CDATA[Critical Reviews in Toxicology]]></source>
<year>1997</year>
<volume>27</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>431-42</page-range></nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Di Salvatore]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Carafa]]></surname>
<given-names><![CDATA[A. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Carratü]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Assessment of heavy metals phytotoxicity using seed germination and root elongation tests: A comparison of two growth substrates]]></article-title>
<source><![CDATA[Chemosphere]]></source>
<year>2008</year>
<volume>73</volume>
<numero>9</numero>
<issue>9</issue>
<page-range>1461-4</page-range></nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Emino]]></surname>
<given-names><![CDATA[E. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Warman]]></surname>
<given-names><![CDATA[P. R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Biological assay for compost quality]]></article-title>
<source><![CDATA[Compost Science and Utilization]]></source>
<year>2004</year>
<volume>12</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>342-8</page-range></nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Esparza]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Gamboa]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Gamboa]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Contaminación debida a la industria curtiembre]]></article-title>
<source><![CDATA[Revista de Química]]></source>
<year>2001</year>
<volume>15</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>41-63</page-range></nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Galán-Huertos]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Romero-Baena]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Contaminación de Suelos por Metales Pesados]]></article-title>
<source><![CDATA[Macla]]></source>
<year>2008</year>
<volume>10</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>48-60</page-range></nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rand]]></surname>
<given-names><![CDATA[Gary M]]></given-names>
</name>
<name>
<surname><![CDATA[Petrocelli]]></surname>
<given-names><![CDATA[S. R]]></given-names>
</name>
</person-group>
<source><![CDATA[Fundamentals of Aquatic Toxicology: Methods and Applications]]></source>
<year>1985</year>
<volume>Vol. 37</volume>
<page-range>666</page-range><publisher-loc><![CDATA[Michigan ]]></publisher-loc>
<publisher-name><![CDATA[Hemisphere Publishing Corporation, Ed. Bioscience]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Jara-Peña]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Gómez]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Montoya]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Chanco]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Mariano]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Cano]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Capacidad fitorremediadora de cinco especies altoandinas de suelos contaminados con metales pesados]]></article-title>
<source><![CDATA[Revista Peruana de Biología]]></source>
<year>2014</year>
<volume>21</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>145-54</page-range></nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Leimbeck]]></surname>
<given-names><![CDATA[R. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Valencia]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Balslev]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Landscape diversity patterns and endemism of Araceae in Ecuador]]></article-title>
<source><![CDATA[Biodiversity and Conservation]]></source>
<year>2004</year>
<volume>13</volume>
<numero>9</numero>
<issue>9</issue>
<page-range>1755-79</page-range></nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cruz]]></surname>
<given-names><![CDATA[J.M.]]></given-names>
</name>
<name>
<surname><![CDATA[Lopes]]></surname>
<given-names><![CDATA[P.R.M.]]></given-names>
</name>
<name>
<surname><![CDATA[Montagnolli]]></surname>
<given-names><![CDATA[R.N.]]></given-names>
</name>
<name>
<surname><![CDATA[Tamada]]></surname>
<given-names><![CDATA[I.S.]]></given-names>
</name>
<name>
<surname><![CDATA[Silva]]></surname>
<given-names><![CDATA[N.M.M.G.]]></given-names>
</name>
<name>
<surname><![CDATA[Bidoia]]></surname>
<given-names><![CDATA[E.D]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Phytotoxicity of Soil Contaminated with Petroleum Derivatives and Biodiesel]]></article-title>
<source><![CDATA[Ecotoxicology and Environmental Contamination]]></source>
<year>2013</year>
<volume>8</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>49-54</page-range></nlm-citation>
</ref>
<ref id="B17">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mendez]]></surname>
<given-names><![CDATA[M. O.]]></given-names>
</name>
<name>
<surname><![CDATA[Maier]]></surname>
<given-names><![CDATA[R. M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Phytostabilization of mine tailings in arid and semiarid environments - An emerging remediation technology]]></article-title>
<source><![CDATA[Environmental Health Perspectives]]></source>
<year>2008</year>
<volume>116</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>278-83</page-range></nlm-citation>
</ref>
<ref id="B18">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mitchell]]></surname>
<given-names><![CDATA[E. J. A. K.]]></given-names>
</name>
<name>
<surname><![CDATA[Burgess]]></surname>
<given-names><![CDATA[J. E.]]></given-names>
</name>
<name>
<surname><![CDATA[Stuetz]]></surname>
<given-names><![CDATA[R. M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Developments in ecotoxicity testing]]></article-title>
<source><![CDATA[Reviews in Environmental Science and Biotechnology]]></source>
<year>2002</year>
</nlm-citation>
</ref>
<ref id="B19">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Murphy]]></surname>
<given-names><![CDATA[C. M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Principles of toxicology]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[David]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Cone]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<source><![CDATA[Emergency Medical Services: Clinical Practice and Systems Oversight]]></source>
<year>2015</year>
<edition>Second Edition</edition>
<page-range>331-40</page-range><publisher-name><![CDATA[US Government]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B20">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Murillo]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Diaz]]></surname>
<given-names><![CDATA[M.C]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Toxicidad de Cr+6, el efluente de cromado de una industria metalmecánica utilizando Panagrellus redivivus como organismo de prueba]]></article-title>
<source><![CDATA[Ingeniería e Investigación]]></source>
<year>1997</year>
<volume>38</volume>
<page-range>5-13</page-range></nlm-citation>
</ref>
<ref id="B21">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Olivares]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Pena]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Bioconcentración de elementos minerales en Amaranthus dubius (bledo, pira): creciendo silvestre en cultivos del estado Miranda, Venezuela, y utilizado en alimentación]]></article-title>
<source><![CDATA[Interciencia]]></source>
<year>2009</year>
<volume>34</volume>
<numero>9</numero>
<issue>9</issue>
<page-range>604-11</page-range></nlm-citation>
</ref>
<ref id="B22">
<nlm-citation citation-type="book">
<collab>Organización para la Cooperación y el Desarrollo Económicos</collab>
<source><![CDATA[Guidelines for the Testing of Chemicals: proposal for updating guideline 208 Terrestrial Plant Test: 208 : Seedling Emergence and Seeding Growth Test]]></source>
<year>2006</year>
<publisher-name><![CDATA[OECD ILibrary]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B23">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Otiniano]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Tuesta]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Robles]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Luján]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Chavez]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Biorremediación de cromo VI de aguas residuales de curtiembres por Pseudomonas sp y su efecto sobre el ciclo celular de Allium cepa]]></article-title>
<source><![CDATA[Revista Médica Vallejiana]]></source>
<year>2007</year>
<volume>4</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>32-42</page-range></nlm-citation>
</ref>
<ref id="B24">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pérez]]></surname>
<given-names><![CDATA[Y. G.]]></given-names>
</name>
<name>
<surname><![CDATA[Gilling]]></surname>
<given-names><![CDATA[Patricia. A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Determinación de la toxicidad aguda del dicromato de potasio en larvas de Artemiasalina]]></article-title>
<source><![CDATA[Anuario Toxicología]]></source>
<year>2001</year>
<volume>1</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>104-8</page-range></nlm-citation>
</ref>
<ref id="B25">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pineda]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Gómez]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Biorremediación de Metales Pesados Cadmio (Cd), Cromo (Cr) y Mercurio (Hg), Mecanismos Bioquímicos e Ingeniería Genética: Una Revisión]]></article-title>
<source><![CDATA[Revista Facultad de Ciencias Básicas]]></source>
<year>2016</year>
<volume>12</volume>
<page-range>172-97</page-range></nlm-citation>
</ref>
<ref id="B26">
<nlm-citation citation-type="">
<collab>Registro oficial de Ecuador</collab>
<source><![CDATA[Acuerdo No. 061 Reforma Del Libro Vi Del Texto Unificado De Legislación Secundaria]]></source>
<year>2015</year>
<page-range>80</page-range></nlm-citation>
</ref>
<ref id="B27">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Suárez-Escobar]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Agudelo Valencia]]></surname>
<given-names><![CDATA[R. Nikolay]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Tratamiento de agua residual procedente de la industria de curtiembres mediante humedales subsuperficiales usando Zantedeschia aethiopica]]></article-title>
<source><![CDATA[Avances Investigación en Ingeniería]]></source>
<year>2014</year>
<volume>11</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>121-6</page-range></nlm-citation>
</ref>
<ref id="B28">
<nlm-citation citation-type="book">
<collab>United States Environmental Protection Agency</collab>
<article-title xml:lang=""><![CDATA[Phase II Toxicity Identification Procedures for Samples Exhibiting Acute and Chronic Toxicity]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Duluth]]></surname>
<given-names><![CDATA[MN]]></given-names>
</name>
</person-group>
<source><![CDATA[Methods for Aquatic Toxicity Identification Evaluations]]></source>
<year>1993</year>
<page-range>1-71</page-range><publisher-name><![CDATA[United States Environmental Protection Agency Duluth]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B29">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Walter]]></surname>
<given-names><![CDATA[I.]]></given-names>
</name>
<name>
<surname><![CDATA[Martínez]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Cala]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Heavy metal speciation and phytotoxic effects of three representative sewage sludge for agricultural uses]]></article-title>
<source><![CDATA[Environmental Pollution]]></source>
<year>2006</year>
<volume>139</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>507-14</page-range></nlm-citation>
</ref>
<ref id="B30">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wei]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Zhou]]></surname>
<given-names><![CDATA[Q.]]></given-names>
</name>
<name>
<surname><![CDATA[Saha]]></surname>
<given-names><![CDATA[U. K]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Hyperaccumulative characteristics of weed species to heavy metals]]></article-title>
<source><![CDATA[Water, Air, and Soil Pollution]]></source>
<year>2008</year>
<volume>192</volume>
<numero>1-4</numero>
<issue>1-4</issue>
<page-range>173-81</page-range></nlm-citation>
</ref>
<ref id="B31">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zurita]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Belmont]]></surname>
<given-names><![CDATA[M. A.]]></given-names>
</name>
<name>
<surname><![CDATA[De Anda]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Cervantes-Martinez]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Stress detection by laser- induced fluorescence in Zantedeschia aethiopica planted in subsurface-flow treatment wetlands]]></article-title>
<source><![CDATA[Ecological Engineering]]></source>
<year>2008</year>
<volume>33</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>110-8</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
