Growth trait genetic parameters in a progeny trial of Pinus oocarpa
In Mexico, Pinus oocarpa Schiede ex Schltdl is one of the forest tree species of major ecological (for its wide geographical distribution), and economic importance (for the resin extraction in natural stands). More intensive exploitation will require establishing commercial plantations, which could...
| Main Authors: | , , , , |
|---|---|
| Formato: | Online |
| Idioma: | spa |
| Publicado: |
Instituto de Ecología, A.C.
2020
|
| Acceso en liña: | https://myb.ojs.inecol.mx/index.php/myb/article/view/2014 |
| _version_ | 1799769390449688576 |
|---|---|
| author | Fabián-Plesníková, Irenka Sáenz-Romero, Cuauhtémoc Cruz de León, José Martínez-Trujillo, Miguel Sánchez Vargas, Nahum M. |
| author_facet | Fabián-Plesníková, Irenka Sáenz-Romero, Cuauhtémoc Cruz de León, José Martínez-Trujillo, Miguel Sánchez Vargas, Nahum M. |
| author_sort | Fabián-Plesníková, Irenka |
| collection | MYB |
| description | In Mexico, Pinus oocarpa Schiede ex Schltdl is one of the forest tree species of major ecological (for its wide geographical distribution), and economic importance (for the resin extraction in natural stands). More intensive exploitation will require establishing commercial plantations, which could be multipurpose: for resin tapping and wood. The present study aimed to explore the genetic control (heritability) of the growth characteristics for total height (HGT), stem base diameter (DIAM), diameter at breast height (DBH) of half-sib progenies from trees originally selected for its resin yield. All these in order to assess the feasibility of a multipurpose breeding program. In 2011, it was established a progeny trial in Michoacán, Mexico, with 27 open-pollinated half-sib families in an experimental design of 10 randomized complete blocks. Five years after its establishment, the mean values were HGT = 5.5 m, in DIAM of 13.4 cm, and DBH = 10.4 cm. We found statistically significant differences among families for all the characteristics. Narrow-sense heritability at individual level (h2i) was: HGT = 0.15, DIAM = 0.22, and DBH = 0.17; at family mean level (h2f) it was 0.44, 0.54, and 0.47, respectively. At an intensity of selection of the best individuals of i = 1.4, the genetic gains for HGT, DIAM, and DBH were 3.9, 5.2, and 5.0%, respectively. If, in the future, it is demonstrated that there is an association between diameter and resin yield, it would be feasible to increase both traits through the selection of the best individuals with the greatest diameters. |
| format | Online |
| id | oai:oai.myb.ojs.inecol.mx:article-2014 |
| institution | Madera y Bosques |
| language | spa |
| publishDate | 2020 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | oai:oai.myb.ojs.inecol.mx:article-20142022-11-29T22:31:57Z Growth trait genetic parameters in a progeny trial of Pinus oocarpa Parámetros genéticos de caracteres de crecimiento en un ensayo de progenies de Pinus oocarpa Fabián-Plesníková, Irenka Sáenz-Romero, Cuauhtémoc Cruz de León, José Martínez-Trujillo, Miguel Sánchez Vargas, Nahum M. componentes de varianza correlaciones fenotípicas correlaciones genéticas ganancia genética heredabilidad pino subtropical In Mexico, Pinus oocarpa Schiede ex Schltdl is one of the forest tree species of major ecological (for its wide geographical distribution), and economic importance (for the resin extraction in natural stands). More intensive exploitation will require establishing commercial plantations, which could be multipurpose: for resin tapping and wood. The present study aimed to explore the genetic control (heritability) of the growth characteristics for total height (HGT), stem base diameter (DIAM), diameter at breast height (DBH) of half-sib progenies from trees originally selected for its resin yield. All these in order to assess the feasibility of a multipurpose breeding program. In 2011, it was established a progeny trial in Michoacán, Mexico, with 27 open-pollinated half-sib families in an experimental design of 10 randomized complete blocks. Five years after its establishment, the mean values were HGT = 5.5 m, in DIAM of 13.4 cm, and DBH = 10.4 cm. We found statistically significant differences among families for all the characteristics. Narrow-sense heritability at individual level (h2i) was: HGT = 0.15, DIAM = 0.22, and DBH = 0.17; at family mean level (h2f) it was 0.44, 0.54, and 0.47, respectively. At an intensity of selection of the best individuals of i = 1.4, the genetic gains for HGT, DIAM, and DBH were 3.9, 5.2, and 5.0%, respectively. If, in the future, it is demonstrated that there is an association between diameter and resin yield, it would be feasible to increase both traits through the selection of the best individuals with the greatest diameters. Pinus oocarpa Schiede ex Schltdl. es una de las especies forestales en México de mayor importancia ecológica (por su amplia distribución geográfica) y económica (por la extracción de su resina en poblaciones naturales). Una resinación más intensiva requerirá de plantaciones comerciales, que podrían ser multipropósito: resina y madera. El objetivo del presente trabajo fue conocer el control genético (heredabilidad) de caracteres de crecimiento (altura total, ALT), diámetro a la base del tallo (DIAM) y diámetro a la altura del pecho (DAP), de progenies de medios hermanos de árboles originalmente seleccionados para producción de resina. Esto con la finalidad de valorar la factibilidad de un programa de mejoramiento genético multipropósito. Se estableció un ensayo de progenies en el año 2011 en Michoacán, México con 27 familias de medios hermanos en un diseño de 10 bloques completos al azar. A los cinco años después de la plantación, los promedios fueron ALT = 5.5 m, DIAM = 13.4 cm y DAP = 10.4 cm. Hubo diferencias significativas entre familias para todos los caracteres. La heredabilidad a nivel individual (h2i) fue: ALT = 0.15, DIAM = 0.22 y DAP = 0.17; a nivel media de familias (h2f) fue de 0.44, 0.54 y 0.47, respectivamente. A una intensidad de selección de mejores individuos de i=1.4, las ganancias genéticas para ALT, DIAM y DAP fueron de 3.9%, 5.2% y 5.0%, respectivamente. De demostrarse posteriormente asociación entre diámetro y producción de resina, sería factible incrementar ambos, mediante selección de individuos con mayores diámetros. Instituto de Ecología, A.C. 2020-12-16 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo evaluado por pares application/pdf text/xml https://myb.ojs.inecol.mx/index.php/myb/article/view/2014 10.21829/myb.2020.2632014 Madera y Bosques; Vol. 26 No. 3 (2020): Autumn 2020 Madera y Bosques; Vol. 26 Núm. 3 (2020): Otoño 2020 2448-7597 1405-0471 spa https://myb.ojs.inecol.mx/index.php/myb/article/view/2014/2129 https://myb.ojs.inecol.mx/index.php/myb/article/view/2014/2177 10.21829/myb.2017.231117 10.21829/myb.2018.243200 Derechos de autor 2020 Madera y Bosques http://creativecommons.org/licenses/by-nc-sa/4.0 |
| spellingShingle | Fabián-Plesníková, Irenka Sáenz-Romero, Cuauhtémoc Cruz de León, José Martínez-Trujillo, Miguel Sánchez Vargas, Nahum M. Growth trait genetic parameters in a progeny trial of Pinus oocarpa |
| title | Growth trait genetic parameters in a progeny trial of Pinus oocarpa |
| title_full | Growth trait genetic parameters in a progeny trial of Pinus oocarpa |
| title_fullStr | Growth trait genetic parameters in a progeny trial of Pinus oocarpa |
| title_full_unstemmed | Growth trait genetic parameters in a progeny trial of Pinus oocarpa |
| title_short | Growth trait genetic parameters in a progeny trial of Pinus oocarpa |
| title_sort | growth trait genetic parameters in a progeny trial of pinus oocarpa |
| url | https://myb.ojs.inecol.mx/index.php/myb/article/view/2014 |
| work_keys_str_mv | AT fabianplesnikovairenka growthtraitgeneticparametersinaprogenytrialofpinusoocarpa AT saenzromerocuauhtemoc growthtraitgeneticparametersinaprogenytrialofpinusoocarpa AT cruzdeleonjose growthtraitgeneticparametersinaprogenytrialofpinusoocarpa AT martineztrujillomiguel growthtraitgeneticparametersinaprogenytrialofpinusoocarpa AT sanchezvargasnahumm growthtraitgeneticparametersinaprogenytrialofpinusoocarpa AT fabianplesnikovairenka parametrosgeneticosdecaracteresdecrecimientoenunensayodeprogeniesdepinusoocarpa AT saenzromerocuauhtemoc parametrosgeneticosdecaracteresdecrecimientoenunensayodeprogeniesdepinusoocarpa AT cruzdeleonjose parametrosgeneticosdecaracteresdecrecimientoenunensayodeprogeniesdepinusoocarpa AT martineztrujillomiguel parametrosgeneticosdecaracteresdecrecimientoenunensayodeprogeniesdepinusoocarpa AT sanchezvargasnahumm parametrosgeneticosdecaracteresdecrecimientoenunensayodeprogeniesdepinusoocarpa |
