Results 51 to 60 of about 61,281 (225)

El mismo fogón: migración y trabajo reproductivo femenino en comunidades mazahuas [PDF]

open access: yes, 2013
En este estudio presentamos los resultados de una investigación sobre el trabajo doméstico o reproductivo y las relaciones de género en la región indígena mazahua del Estado de México, en el contexto de migración nacional e internacional.
LUTZ, BRUNO HENRI   +5 more
core  

Automated extraction of leaf mass per area from digitized herbarium specimens

open access: yesNew Phytologist, EarlyView.
Summary The digitization of vast herbarium collections has made millions of plant specimen images freely available online, which can now be used to generate phenotypic datasets of unprecedented scope. Here, we assess the potential of computer vision tools to automate the extraction of predicted leaf mass per area (LMApred) from digitized herbarium ...
Thais Vasconcelos   +4 more
wiley   +1 more source

Pruning in peach tree : pattern and evaluation [PDF]

open access: yes, 2006
Fil: Ojer, Miguel. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias.
Ojer, Miguel
core  

Specimen‐tailored ‘lived’ climate reveals precipitation onset and amount best predict specimen phenology, but only weakly predict estimated reproduction across a clade

open access: yesNew Phytologist, EarlyView.
Summary Herbarium specimens are widely distributed in space and time, thereby capturing diverse conditions. We reconstructed specimen ‘lived’ climate from knowledge of germination cues and collection dates for 14 annual species in the Streptanthus (s.l.) clade (Brassicaceae) to ask: which climate attributes best explain specimen phenological stage and ...
Megan Bontrager   +6 more
wiley   +1 more source

Biología floral, sistema reproductivo y éxito reproductivo de Macroptilium fraternum (Fabaceae)</a> </p><span class="r_subtitle"><img src="/img/openaccess.ico" alt="open access: yes" title="open access: yes" width="16" height="16"><i>Revista de Biología Tropical</i>, 2003 </span><br><span class="r_content">Se realizaron observaciones de la biología floral y el sistema reproductivo de Macroptilium fraternum en dos poblaciones de la Argentina, con diferentes condiciones edáficas, localizadas en el extremo Sur del área de distribución de esta especie.</span><br><span class="r_sub"><i>Patricia S. Hoc<span id="ma_5" style="display:none">, Susana I. Drewes, María T. Amela García</span>   <small><a href="#" style="color:#808080;" onClick="return toggle_div(this, 'ma_5')">+2 more</a></small></i></span><br><small><a href="https://doaj.org/article/aba016bed3474c3895bb169a9bc651a4" target="_blank" rel="nofollow" title="doaj.org/article/aba016bed3474c3895bb169a9bc651a4">doaj</a> </small>   <br></div><div class="r"><p class="r_title"><a href="https://doi.org/10.1111/nph.70748" target="_blank" rel="nofollow">Hybridity of mainly asexually propagating duckweeds in genus Lemna – dead end or breakthrough?</a> </p><span class="r_subtitle"><img src="/img/openaccess.ico" alt="open access: yes" title="open access: yes" width="16" height="16"><i>New Phytologist, Volume 250, Issue 1, Page 629-647, April 2026.</i></span><br><span class="r_content">Summary The cosmopolitan, mainly vegetatively propagating, organ‐reduced monocotyledonous aquatic duckweeds are the smallest and fastest growing angiosperms, distributed world‐wide and flower rarely in nature. Recently, we reported intra‐ and interspecific hybrids and ploidy variants in the genus Lemna.</span><br><span class="r_sub"><i>Yuri Lee<span id="ma_6" style="display:none">, Luca Braglia, Anton Stepanenko, Jörg Fuchs, Veit Schubert, Silvia Gianì, Leone Ermes Romano, Giovanna Aronne, Chiara Forti, Ingo Schubert, Laura Morello</span>   <small><a href="#" style="color:#808080;" onClick="return toggle_div(this, 'ma_6')">+10 more</a></small></i></span><br><small><a href="https://onlinelibrary.wiley.com/doi/10.1111/nph.70748?mi=2or9o2m&af=R&AllField=sistema reproductivo&ConceptID=15941&content=articlesChapters&target=default" target="_blank" rel="nofollow" title="wiley.com/doi/10.1111/nph.70748?mi=2or9o2m&af=R&AllField=sistema reproductivo&ConceptID=15941&content=articlesChapters&target=default">wiley</a> </small>   <div id="more_6" style="display:none"><a href="/sci_redir.php?doi=10.1111%2Fnph.70748" target="_blank" rel="nofollow">openaccessbutton.org (pdf)</a><br><a href="javascript:navigator.clipboard.writeText('10.1111/nph.70748'); alert('Copied the doi');">copy doi</a> <small>(10.1111/nph.70748)</small><br></div><small><a href="#" onClick="return toggle_div(this, 'more_6')">+1 more source</a></small><br></div><div class="r"><p class="r_title"><a href="https://doi.org/10.31055/1851.2372.v53.n4.21984" target="_blank" rel="nofollow">Aspectos reproductivos de Schinus areira L. (Anacardiaceae) en Argentina</a> </p><span class="r_subtitle"><img src="/img/openaccess.ico" alt="open access: yes" title="open access: yes" width="16" height="16"><i>Boletín de la Sociedad Argentina de Botánica</i>, 2018 </span><br><span class="r_content">Schinus areira L. es un árbol naturalizado en el noroeste y oeste de Argentina y extensamente cultivado en el país. Nuestros objetivos fueron (1) determinar la biología floral y reproductiva de S.</span><br><span class="r_sub"><i>María A. Zapater<span id="ma_7" style="display:none">, María M. Alemán, Evangelina C. Lozano, Victor H. Aquino, Carolina B. Flores, Miriam N. Gil, Johana Villada, Gustavo Araya</span>   <small><a href="#" style="color:#808080;" onClick="return toggle_div(this, 'ma_7')">+7 more</a></small></i></span><br><small><a href="https://doaj.org/article/84189e19e7ed4b02b9b20ee84c79910b" target="_blank" rel="nofollow" title="doaj.org/article/84189e19e7ed4b02b9b20ee84c79910b">doaj</a> </small>   <div id="more_7" style="display:none"><a href="/sci_redir.php?doi=10.31055%2F1851.2372.v53.n4.21984" target="_blank" rel="nofollow">openaccessbutton.org (pdf)</a><br><a href="javascript:navigator.clipboard.writeText('10.31055/1851.2372.v53.n4.21984'); alert('Copied the doi');">copy doi</a> <small>(10.31055/1851.2372.v53.n4.21984)</small><br></div><small><a href="#" onClick="return toggle_div(this, 'more_7')">+1 more source</a></small><br></div><div class="r"><p class="r_title"><a href="https://core.ac.uk/download/33720434.pdf" target="_blank" rel="nofollow">Comportamiento reproductivo del lobo marino sudamericano</a> <b><a href="http://aquaticcommons.org/16719/2/CienciaHoy2000_10_59_34.pdf" target="_blank" rel="nofollow">[PDF]</a></b> </p><span class="r_subtitle"><img src="/img/openaccess.ico" alt="open access: yes" title="open access: yes" width="16" height="16">, 2000 </span><br><span class="r_content">En la evolución de los lobos sudamericanos, son varios los factores que modelaran sus comportamientos reproductivos y las diferencias entre los sexos que podemos observar en la naturaleza.</span><br><span class="r_sub"><i>Cappozzo, L.</i></span><br><small><a href="https://core.ac.uk/works/20013300" target="_blank" rel="nofollow" title="core.ac.uk/works/20013300">core</a> </small>   <br></div><div class="r"><p class="r_title"><a href="https://doi.org/10.1387/theoria.3000" target="_blank" rel="nofollow">Teleología Naturalizada: Los conceptos de función, aptitud y adaptación en la Teoría de la Selección Natural (Naturalized Teleology: The concepts of function, fitness and adaptation in Natural Selection Theory)</a> <b><a href="https://addi.ehu.es/bitstream/10810/39509/1/3000-27511-1-PB.pdf" target="_blank" rel="nofollow">[PDF]</a></b> </p><span class="r_subtitle"><img src="/img/openaccess.ico" alt="open access: yes" title="open access: yes" width="16" height="16">, 2013 </span><br><span class="r_content">En la Teoría de la Selección Natural, el concepto de función biológica debe suponerse para delimitar el concepto de aptitud; y éste debe suponerse para delimitar el concepto de adaptación y también para explicar el fenómeno al que este último alude ...</span><br><span class="r_sub"><i>Caponi, Gustavo</i></span><br><small><a href="https://core.ac.uk/works/26267942" target="_blank" rel="nofollow" title="core.ac.uk/works/26267942">core</a> </small>   <div id="more_9" style="display:none"><a href="/sci_redir.php?doi=10.1387%2Ftheoria.3000" target="_blank" rel="nofollow">openaccessbutton.org (pdf)</a><br><a href="https://www.ehu.eus/ojs/index.php/THEORIA/article/download/3000/6591" target="_blank" rel="nofollow" title="ehu.eus/ojs/index.php/THEORIA/article/download/3000/6591">ehu.eus</a><br> <a href="http://hdl.handle.net/10810/39509" target="_blank" rel="nofollow" title="hdl.handle.net/10810/39509">hdl.handle.net</a><br> <a href="http://philsci-archive.pitt.edu/10190/1/6591.pdf" target="_blank" rel="nofollow" title="philsci-archive.pitt.edu/10190/1/6591.pdf">philsci-archive.pitt.edu (pdf)</a><br> <a href="http://doaj.org/search?source=%7B%22query%22%3A%7B%22bool%22%3A%7B%22must%22%3A%5B%7B%22term%22%3A%7B%22id%22%3A%22d126d3575ed34ff7a19eece35cfe88b9%22%7D%7D%5D%7D%7D%7D" target="_blank" rel="nofollow" title="doaj.org/search?source=%7B%22query%22%3A%7B%22bool%22%3A%7B%22must%22%3A%5B%7B%22term%22%3A%7B%22id%22%3A%22d126d3575ed34ff7a19eece35cfe88b9%22%7D%7D%5D%7D%7D%7D">doaj.org</a><br> <a href="javascript:navigator.clipboard.writeText('10.1387/theoria.3000'); alert('Copied the doi');">copy doi</a> <small>(10.1387/theoria.3000)</small><br></div><small><a href="#" onClick="return toggle_div(this, 'more_9')">+5 more sources</a></small><br></div><div class="r"><p class="r_title"><a href="https://doi.org/10.1111/nph.70880" target="_blank" rel="nofollow">Population genomic signatures of founding events in autonomously self‐fertilizing plants: a test with Impatiens capensis</a> </p><span class="r_subtitle"><img src="/img/openaccess.ico" alt="open access: yes" title="open access: yes" width="16" height="16"><i>New Phytologist, Volume 250, Issue 1, Page 616-628, April 2026.</i></span><br><span class="r_content">Summary Autonomously self‐fertilizing plants possess disproportionate abilities to found populations. Viewed from the metapopulation perspective, founding events should be frequent in such plants, but the intensity and timing of bottlenecks and recovery should vary among populations.</span><br><span class="r_sub"><i>Daniel J. Schoen, Rachel H. Toczydlowski</i></span><br><small><a href="https://onlinelibrary.wiley.com/doi/10.1111/nph.70880?mi=2or9o2m&af=R&AllField=sistema reproductivo&ConceptID=15941&content=articlesChapters&target=default" target="_blank" rel="nofollow" title="wiley.com/doi/10.1111/nph.70880?mi=2or9o2m&af=R&AllField=sistema reproductivo&ConceptID=15941&content=articlesChapters&target=default">wiley</a> </small>   <div id="more_10" style="display:none"><a href="/sci_redir.php?doi=10.1111%2Fnph.70880" target="_blank" rel="nofollow">openaccessbutton.org (pdf)</a><br><a href="javascript:navigator.clipboard.writeText('10.1111/nph.70880'); alert('Copied the doi');">copy doi</a> <small>(10.1111/nph.70880)</small><br></div><small><a href="#" onClick="return toggle_div(this, 'more_10')">+1 more source</a></small><br></div><div class="r"><div style="margin-bottom:2px;overflow:hidden"><div style="display: inline-block; float: left; font-size: small; padding-right: 16px; margin-top: -1px; padding-bottom: 1px;"><a href="/q-15._life_on_land/" class="suggestion"onclick="show_loader();"><b>15. life on land</b></a><br/><a href="/q-reproductive_system/" class="suggestion"onclick="show_loader();"><b>reproductive system</b></a><br/><a href="/q-polinizaci%C3%B3n/" class="suggestion"onclick="show_loader();"><b>polinización</b></a><br/></div><div style="display: inline-block; float: left; font-size: small; padding-right: 16px; margin-top: -1px; padding-bottom: 1px;"><a href="/q-%C3%A9xito_reproductivo/" class="suggestion"onclick="show_loader();"><b>éxito reproductivo</b></a><br/><a href="/q-autoincompatibilidad/" class="suggestion"onclick="show_loader();"><b>autoincompatibilidad</b></a><br/><a href="/q-fabaceae/" class="suggestion"onclick="show_loader();"><b>fabaceae</b></a><br/></div><div style="display: inline-block; float: left; font-size: small; padding-right: 16px; margin-top: -1px; padding-bottom: 1px;"><a href="/q-floral_biology/" class="suggestion"onclick="show_loader();"><b>floral biology</b></a><br/><a href="/q-qk1-989/" class="suggestion"onclick="show_loader();"><b>qk1-989</b></a><br/><a href="/q-botany/" class="suggestion"onclick="show_loader();"><b>botany</b></a><br/></div></div></div><div class="pagenav"><a href="/q-sistema_reproductivo/p-5/" rel="nofollow"><b>previous</b></a>   <a href="/q-sistema_reproductivo/p-4/" rel="nofollow">4</a>  <a href="/q-sistema_reproductivo/p-5/" rel="nofollow">5</a>  <b>6</b>  <a href="/q-sistema_reproductivo/p-7/" rel="nofollow">7</a>  <a href="/q-sistema_reproductivo/p-8/" rel="nofollow">8</a>   <a href="/q-sistema_reproductivo/p-7/" id="next" rel="nofollow"><b>next</b></a> </div><br></div> </div> <script>document.getElementById('loadingGif').style.display='none';</script><div style="width: 100%; height: 40px; bottom: 0px; background-color: #f5f5f5;"><div style="padding-left: 15px; padding-top: 10px"> <a href="/" rel="nofollow">Home</a> - <a href="/page-about/" rel="nofollow">About</a> - <a href="/page-disclaimer/" rel="nofollow">Disclaimer</a> - <a href="/page-privacy/" rel="nofollow">Privacy</a> </div></div> <link rel="stylesheet" href="//ajax.googleapis.com/ajax/libs/jqueryui/1.11.4/themes/smoothness/jquery-ui.min.css"/> </body> </html>