CRUZAMIENTOS INTRA E INTERESPECIFICOS EN TURNERA , SERIE CANALIGERAE

• Main Authors: María Mercedes Arbo, Aveliano Fernández
• Format: Article
• Language: Spanish
• Published: Instituto de Botánica del Nordeste 1987-01-01
• Series: Bonplandia
• Online Access: http://revistas.unne.edu.ar/index.php/bon/article/view/1502

<span style="font-family: arial, sans-serif; font-size: 16px;"><span style="background-color: #ffffff;" title="Canaligerae is one of the 9 series of the genus Turnera."><em>Canaligerae</em> es una de las 9 series del g&eacute;nero <em>Turnera</em>.&nbsp;</span><span title="The">Las&nbsp;</span><span style="background-color: #ffffff;" title="species in this series have the most advanced floral morphology, and they and the only species known so far with basic number x=5.">especies de esta serie tienen la morfolog&iacute;a floral m&aacute;s avanzada, y son la &uacute;nica serie conocida hasta ahora con n&uacute;mero b&aacute;sico x = 5. </span><span style="background-color: #ffffff;" title="A controlled crossing programme was undertaken among">Un programa de cruzamientos controlados se llev&oacute; a cabo entre&nbsp; </span><span style="background-color: #ffffff;" title="13 species, 4 of them with diploid and tetraploid cytotypes,">13 especies, cuatro de ellos con citotipos diploides y tetraploides,<br /></span><span style="background-color: #ffffff;" title="totalizing 17 accessions from tropical and subtropical regions">totalizando 17 accesiones de las regiones tropicales y subtropicales&nbsp;</span><span style="background-color: #ffffff;" title="of America.">de Am&eacute;rica.&nbsp;<br /></span><span style="background-color: #ffffff;" title="The production of hybrids was used to determine the degree">La producci&oacute;n de h&iacute;bridos se utiliz&oacute; para determinar el grado&nbsp;</span><span style="background-color: #ffffff;" title="of affinity between the entities.">de afinidad entre las entidades.&nbsp;</span><span title="The production of non viable">La producci&oacute;n de los <span style="background-color: #ffffff;" title="hybrids, good seeds which do not germinate, empty seeds and">h&iacute;bridos</span> no viables</span><span style="background-color: #ffffff;" title="hybrids, good seeds which do not germinate, empty seeds and">, buenas semillas que no germinan, semillas vanas y&nbsp;</span><span style="background-color: #ffffff;" title="the not successful crosses were considered as failures Only the">el &eacute;xito de los cruces no fueron considerados como fracasos S&oacute;lo&nbsp;</span><span style="background-color: #ffffff;" title="production of viable hybrids were considered as successes.">la producci&oacute;n de h&iacute;bridos viables fue consideradas como &eacute;xitos.&nbsp;<br /></span><span style="background-color: #ffffff;" title="Of the 136 possible combinations (counting each cross and its reciprocal to be one cross) 53 hybrids and 83 failures were recovered.">De las 136 combinaciones posibles (contando cada cruce y su rec&iacute;proco a ser una cruz) 53 h&iacute;bridos y fracasos 83 fueron recuperados.&nbsp;<br /></span><span style="background-color: #ffffff;" title="Crossability among diploid species indicates that the species with blue-white flowers (T.caerulea, T.sunnamensis and T.grandiflora) are a closely associated group; the same occurs with the species with yellow flowers(T.scabra, T.subulata,">La capacidad de cruzamiento&nbsp;entre las especies diploides indica que las especies con flores de color azul-blanca (<em>T.caerulea, T.sunnamensis y T.grandiflora</em>) son un grupo estrechamente relacionado, y lo mismo ocurre con las especies de flores amarillas (<em>T.scabra, T.subulata,&nbsp;</em></span><span title="T.Krapovickasii and T.concinna)."><em>T. Krapovickasii y T.concinna</em>). </span><span style="background-color: #ffffff;" title="The species with blue-white flowers are genetically isolated not only from the species with yellow flowers but also from the rest of the species studied here.">Las especies con flores de color azul-blanco son gen&eacute;ticamente aisladas no s&oacute;lo de las especies con flores amarillas, sino tambi&eacute;n del resto de las especies estudiadas aqu&iacute;.&nbsp;</span><span style="background-color: #ffffff;" title="T.coriacea and T.hermannioides seem to be also genetically isolated from the rest of the species considered here."><em>T.coriacea </em>y <em>T.hermannioides</em> parecen estar tambi&eacute;n gen&eacute;ticamente aisladas del resto de las especies consideradas aqu&iacute;.&nbsp;<br /></span><span style="background-color: #ffffff;" title="T.aff.coriacea and T.hermannioides seem to be also genetically isolated from the rest of the species considered here."><em>T.aff.coriacea </em>y<em> T.hermannioides</em> parecen tambi&eacute;n&nbsp;estar gen&eacute;ticamente aisladas del resto de las especies consideradas aqu&iacute;.&nbsp;</span><span style="background-color: #ffffff;" title="On the other hand, intraspecific hybrids between cytotypes point out the genetic continuity between 2x and 4x individuals belonging to the same species.">Por otro lado, los h&iacute;bridos intraespec&iacute;ficos entre citotipos se&ntilde;ala la continuidad gen&eacute;tica entre los individuos 2x y 4x que pertenecen a la misma especie.&nbsp;<br /></span><span title="Alopolyploids (T.grandidentata, T.orientalis, T.ulmifolia">Alopolyploids (T.grandidentata, T.orientalis, T.ulmifolia&nbsp;</span><span style="background-color: #ffffff;" title="and T.Aurelii have a wider range of crossability probably">y T. Aurelii tener una gama m&aacute;s amplia de cruzabilidad probablemente&nbsp;</span><span title="due to the presence of different genomes in their chromosomal">debido a la presencia de genomas diferentes en sus cromosomas&nbsp;</span><span title="complements.">complementos.&nbsp;</span><span style="background-color: #ffffff;" title="The percentage of success over the crosses attempted is 60% in the case of the alopolyploids and 29% in that of the autopolyploids.">El porcentaje de &eacute;xito en los cruces de tentativa es el 60% en el caso de la alopolyploids y 29% en el de la autopoliploides.</span></span>