<?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>2007-0934</journal-id>
<journal-title><![CDATA[Revista mexicana de ciencias agrícolas]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Mex. Cienc. Agríc]]></abbrev-journal-title>
<issn>2007-0934</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-09342016000902487</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Efecto del cambio climático en la acumulación de horas frío en la región nogalera de Hermosillo, Sonora]]></article-title>
<article-title xml:lang="en"><![CDATA[Effect of climate change on the accumulation of cold hours in the pecan region from Hermosillo, Sonora]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Grageda Grageda]]></surname>
<given-names><![CDATA[José]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ruiz Corral]]></surname>
<given-names><![CDATA[José Ariel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García Romero]]></surname>
<given-names><![CDATA[Giovanni Emmanuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Núñez Moreno]]></surname>
<given-names><![CDATA[Jesús Humberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valenzuela Lagarda]]></surname>
<given-names><![CDATA[Javier]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ruiz Álvarez]]></surname>
<given-names><![CDATA[Osías]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Jiménez Lagunes]]></surname>
<given-names><![CDATA[Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,INIFAP  Campo Experimental Costa de Hermosillo]]></institution>
<addr-line><![CDATA[Hermosillo Sonora]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,INIFAP CIRPAC Campo Experimental Centro-Altos de Jalisco]]></institution>
<addr-line><![CDATA[Tepatitlán Jalisco]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Comité Estatal de Sanidad Vegetal de Sonora  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="Af4">
<institution><![CDATA[,INIFAP CIRNOC Campo Experimental Pabellón]]></institution>
<addr-line><![CDATA[Pabellón Aguascalientes]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>02</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>02</month>
<year>2016</year>
</pub-date>
<volume>7</volume>
<numero>spe13</numero>
<fpage>2487</fpage>
<lpage>2495</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-09342016000902487&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-09342016000902487&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-09342016000902487&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El calentamiento del sistema climático es evidente, como lo muestran los aumentos del promedio mundial de la temperatura del aire y del océano. Los cultivos pueden verse favorecidos por los aumentos de bióxido de carbono atmosférico, pero el incremento de la temperatura afectará el desarrollo de frutales caducifolios como el nogal pecanero (Carya illinoinensis K. Koch), que requieren una acumulación de frío para romper el período de dormancia. Se obtuvieron para el área nogalera de la región de Hermosillo, Sonora, mapas de la climatología actual, así como escenarios futuros (2030, 2050 y 2070), para las trayectorias representativas de concentración de gases efecto invernadero (RCP) 4.5 y 8.5. Se observa un fuerte incremento de la temperatura media entre diciembre y enero (+2 °C) incluso desde el escenario del año 2030 con el RCP 4.5 (estable), a la par de un decremento de las horas frío acumuladas en ese período de 100 HF, por lo que en un futuro se deberán generar cultivares de nogal de menor requerimiento de frío y/o desplazar las huertas de nogal a regiones con mayor acumulación, para poder mantener sustentable la productividad de este cultivo.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Global warming is evident, as shown by the increases in global average air temperature and from the ocean. Crops can be favored by increases in atmospheric carbon dioxide, but the increase in temperature will affect the development of deciduous fruit trees such as pecan (Carya illinoinensis K. Koch), which require an accumulation of cold to break the dormancy period. For the pecan area from Hermosillo, Sonora, current weather maps and future scenarios (2030, 2050 and 2070) for representative concentration pathways of greenhouse gases (RCP) 4.5 and 8.5 were obtained. There is a strong increase in average temperature between December and January (+2°C) even from the scenario in 2030 with RCP 4.5 (stable), along with a decrease in cold hours accumulated during this period 100 HF, so that in the future should generate pecan cultivars with low cold requirement or to displace pecan orchards to regions with more accumulation, in order to maintain sustainable productivity of this crop.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[horas frío]]></kwd>
<kwd lng="es"><![CDATA[nogal pecanero]]></kwd>
<kwd lng="es"><![CDATA[temperatura]]></kwd>
<kwd lng="en"><![CDATA[cold hours]]></kwd>
<kwd lng="en"><![CDATA[pecan]]></kwd>
<kwd lng="en"><![CDATA[temperature]]></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[Amling]]></surname>
<given-names><![CDATA[H. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Amling]]></surname>
<given-names><![CDATA[K. A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Onset, intensity, and dissipation of rest in several pecan cultivars]]></article-title>
<source><![CDATA[J. Amer. Soc. Hort. Sci.]]></source>
<year>1980</year>
<volume>105</volume>
<page-range>536-40</page-range></nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Díaz]]></surname>
<given-names><![CDATA[M. D. H.]]></given-names>
</name>
</person-group>
<source><![CDATA[Requerimiento de frío en frutales caducifolios]]></source>
<year>1987</year>
<page-range>21</page-range><publisher-loc><![CDATA[México, D. F. ]]></publisher-loc>
<publisher-name><![CDATA[SARH-INIFAP]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="">
<collab>IPCC (Intergovernmental Panel on Climate Change)</collab>
<source><![CDATA[Cambio climático 2007: Informe de síntesis. Contribución de los grupos de trabajo I, II y III al Cuarto Informe de evaluación del Grupo Intergubernamental de Expertos sobre el Cambio Climático. P.2]]></source>
<year>2007</year>
<page-range>2</page-range><publisher-loc><![CDATA[Ginebra, Suiza ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="book">
<collab>IPCC (Intergovernmental Panel on Climate Change)</collab>
<source><![CDATA[Cambio climático. Base de ciencia física]]></source>
<year>2013</year>
<page-range>2</page-range><publisher-loc><![CDATA[Bern, Suiza ]]></publisher-loc>
<publisher-name><![CDATA[WGI Technical Support Unit]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Eastman]]></surname>
<given-names><![CDATA[J. R.]]></given-names>
</name>
</person-group>
<source><![CDATA[IDRISI v 15.1. IDRISI Andes. Guide to GIS and image processing]]></source>
<year>2006</year>
<volume>1</volume>
<page-range>328</page-range><publisher-loc><![CDATA[Worcester, Mass, USA ]]></publisher-loc>
<publisher-name><![CDATA[Clark Labs-Clark University]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Jones]]></surname>
<given-names><![CDATA[P. D.]]></given-names>
</name>
<name>
<surname><![CDATA[Parker]]></surname>
<given-names><![CDATA[D. E.]]></given-names>
</name>
<name>
<surname><![CDATA[Osborn]]></surname>
<given-names><![CDATA[T. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Briffa]]></surname>
<given-names><![CDATA[K. R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Global and hemispheric temperatures anomalies land and marine instrumental records]]></article-title>
<source><![CDATA[trends a compendium of data on global change]]></source>
<year>2009</year>
<publisher-loc><![CDATA[USA ]]></publisher-loc>
<publisher-name><![CDATA[Carbon dioxide information analysis center, Oak Ridge National Laboratory, U. S. Department of Energy]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Leroy]]></surname>
<given-names><![CDATA[S. S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Optimal detection of global warming using temperature profiles: a methodology]]></article-title>
<source><![CDATA[J. Clim.]]></source>
<year>1999</year>
<volume>12</volume>
<page-range>1185-98</page-range></nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[McEachern]]></surname>
<given-names><![CDATA[G. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Wolstenholme]]></surname>
<given-names><![CDATA[B. N.]]></given-names>
</name>
<name>
<surname><![CDATA[Storey]]></surname>
<given-names><![CDATA[J. B.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Chilling requirements of three pecan cultivars]]></article-title>
<source><![CDATA[HortScience]]></source>
<year>1978</year>
<volume>13</volume>
<page-range>694</page-range></nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Nasr]]></surname>
<given-names><![CDATA[T. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Hassan]]></surname>
<given-names><![CDATA[E. M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The rest period of pecan in Egypt]]></article-title>
<source><![CDATA[Scientia Hort.]]></source>
<year>1975</year>
<volume>3</volume>
<page-range>367-72</page-range></nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ortiz]]></surname>
<given-names><![CDATA[S. C. A.]]></given-names>
</name>
</person-group>
<source><![CDATA[Elementos de Agrometeorología cuantitativa con aplicaciones en la República Mexicana]]></source>
<year>1987</year>
<edition>3</edition>
<page-range>83-4</page-range><publisher-name><![CDATA[Departamento de Suelos. Universidad Autónoma Chapingo]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Osorio]]></surname>
<given-names><![CDATA[A. G.]]></given-names>
</name>
<name>
<surname><![CDATA[Díaz]]></surname>
<given-names><![CDATA[M. D.]]></given-names>
</name>
<name>
<surname><![CDATA[Siller]]></surname>
<given-names><![CDATA[C. J.]]></given-names>
</name>
</person-group>
<source><![CDATA[Regulación de la brotación en vid bajo condiciones del desierto de Sonora]]></source>
<year>1997</year>
<page-range>72</page-range><publisher-loc><![CDATA[Hermosillo, Sonora ]]></publisher-loc>
<publisher-name><![CDATA[INIFAP- CIRNO-CECH]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ruiz]]></surname>
<given-names><![CDATA[C. J. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Medina]]></surname>
<given-names><![CDATA[G. G.]]></given-names>
</name>
<name>
<surname><![CDATA[Grageda]]></surname>
<given-names><![CDATA[G. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Silva]]></surname>
<given-names><![CDATA[S. M. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Díaz]]></surname>
<given-names><![CDATA[P. G.]]></given-names>
</name>
</person-group>
<source><![CDATA[Estadísticas climatológicas básicas del estado de Sonora]]></source>
<year>2005</year>
<page-range>171</page-range><publisher-loc><![CDATA[Hermosillo, Sonora ]]></publisher-loc>
<publisher-name><![CDATA[INIFAP-CIRNO]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Salinger]]></surname>
<given-names><![CDATA[M. J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Climate variability and change: past, present and future - an overview]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Salinger]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Sivakumar]]></surname>
<given-names><![CDATA[M. V. K.]]></given-names>
</name>
<name>
<surname><![CDATA[Motha]]></surname>
<given-names><![CDATA[R. P.]]></given-names>
</name>
</person-group>
<source><![CDATA[increasing climate variability and change]]></source>
<year>2005</year>
<page-range>9-29</page-range><publisher-loc><![CDATA[USA ]]></publisher-loc>
<publisher-name><![CDATA[Springer]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Smith]]></surname>
<given-names><![CDATA[M. W.]]></given-names>
</name>
<name>
<surname><![CDATA[Carroll]]></surname>
<given-names><![CDATA[B. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Cheary]]></surname>
<given-names><![CDATA[B. S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Chilling requirement of pecan]]></article-title>
<source><![CDATA[J. Amer. Soc. Hort. Sci.]]></source>
<year>1992</year>
<volume>117</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>745-8</page-range></nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Van Horn]]></surname>
<given-names><![CDATA[C. W.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Delayed foliation of pecan trees in Arizona]]></article-title>
<source><![CDATA[Proc. Amer. Soc. Hort. Sci.]]></source>
<year>1941</year>
<volume>39</volume>
<page-range>87-94</page-range></nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Waite]]></surname>
<given-names><![CDATA[M. D.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Factors influencing the setting of nuts and fruits]]></article-title>
<source><![CDATA[Proc. Natl. Pecan Growers&#8217;Assn.]]></source>
<year>1925</year>
<volume>24</volume>
<page-range>122-44</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
