<?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>S0120-28122017000200214</article-id>
<article-id pub-id-type="doi">10.15446/acag.v66n2.55897</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Growth, phenology and chlorophyll fluorescence of habanero pepper ( Capsicum chinense Jacq.) under water stress conditions]]></article-title>
<article-title xml:lang="es"><![CDATA[Crecimiento, fenología y fluorescencia de la clorofila del chile habanero ( Capsicum chinense Jacq.) bajo condiciones de estrés hídrico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-Gutiérrez]]></surname>
<given-names><![CDATA[Alfonzo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Garruña]]></surname>
<given-names><![CDATA[René]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vázquez]]></surname>
<given-names><![CDATA[Pedro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Latournerie-Moreno]]></surname>
<given-names><![CDATA[Luis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Andrade]]></surname>
<given-names><![CDATA[José Luis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Us-Santamaría]]></surname>
<given-names><![CDATA[Roberth]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Tecnológico de Conkal División de Estudios de Posgrado e Investigación ]]></institution>
<addr-line><![CDATA[Conkal Yucatán]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,CONACYT Instituto Tecnológico de Conkal ]]></institution>
<addr-line><![CDATA[Conkal Yucatán]]></addr-line>
<country>México</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Centro de Investigación Científica de Yucatán Unidad de Recursos Naturales ]]></institution>
<addr-line><![CDATA[Mérida Yucatán]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2017</year>
</pub-date>
<volume>66</volume>
<numero>2</numero>
<fpage>214</fpage>
<lpage>220</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-28122017000200214&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-28122017000200214&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-28122017000200214&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: The irrigation methods offer a good alternative for increasing water use efficiency. The main purpose of this study was to identify the best irrigation level for Habanero pepper (Capsicum chinense Jacq.) plants based on available water capacity (AWC) of substrate. An experiment carried out with three irrigation levels (20, 40 and 60% of AWC) and five genotypes (H225, H241, H244, H226 and Jaguar). The irrigation level of 20% decreased the soil water potential to cause water stress in plants. At an irrigation level of 40%, average jaguar plant height (92 cm) and H241 (79 cm), genotypes were greater than under the other treatments. Average leaf area of H225, H241 and H244 plants was at least 48% greater than Jaguar plants. Average total dry matter of H241 and Jaguar plants, were 30 and 28% greater than H226 plants; and values of maximum photochemical quantum yield (Fv/Fm), relative electron transport rate and effective photochemical quantum yield of photosystem II were higher in H241, H244 and H226 plants; i.e. they are less probably due to photo inhibition damage. However, flowering time was earlier in plants with an irrigation level (IL) of 20% than plants with an IL of 40%, this was a consequence of stress due to water deficit. The 60% irrigation treatment caused flooding and all genotypes died before the inflorescence stage. These results suggest the enforcement of a suitable irrigation level based in available water capacity of substrate coupled with a vigorous genotype can encourage healthy plants and high water use efficiency.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: Los métodos de riego ofrecen una buena alternativa para incrementar el uso eficiente del agua. El objetivo de este estudio fue identificar la mejor lámina de riego para las plantas de chile habanero (Capsicum chinense Jacq.) basado en la capacidad de agua disponible (AWC) del sustrato. Se realizó un experimento con tres láminas de riego (20, 40 y 60% de AWC) y cinco genotipos (H225, H241, H244, H226 y Jaguar). La lámina de 20% disminuyó el potencial hídrico del sustrato, causando estrés hídrico en las plantas. Con una lámina de 40%, la altura de planta de los genotipos Jaguar (92 cm) y H241 (79 cm) fue mayor que en los otros tratamientos; el área foliar de H225, H241 y H244 fue al menos 48% mayor que en las plantas de Jaguar; la biomasa total de las plantas de H241 y Jaguar fue 30 y 28% mayor que las de H226; el rendimiento cuántico máximo fotoquímico (Fv/Fm), la tasa relativa de transporte de electrones y el rendimiento cuántico efectivo del fotosistema II fueron superiores en las plantas de H241, H244 y H226; i.e. estos genotipos son menos susceptibles a sufrir daños por foto inhibición. Sin embargo, la floración fue más precoz en las plantas regadas con 20% que en las regadas con 40%, esto lo ocasionó el estrés por falta de agua. El tratamiento de riego a 60% causó inundación y las plantas de todos los genotipos murieron antes de la floración. Estos resultados sugieren que la aplicación de una adecuada lámina de riego acoplada con un genotipo vigoroso, pueden estimular plantas saludables con un alto uso eficiente del agua.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Drought stress]]></kwd>
<kwd lng="en"><![CDATA[electron transport rate]]></kwd>
<kwd lng="en"><![CDATA[flowering phenophase]]></kwd>
<kwd lng="en"><![CDATA[irrigation level]]></kwd>
<kwd lng="es"><![CDATA[Estrés por sequía]]></kwd>
<kwd lng="es"><![CDATA[fenofase floración]]></kwd>
<kwd lng="es"><![CDATA[lámina de riego]]></kwd>
<kwd lng="es"><![CDATA[tasa de transporte de electrones]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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