Caracterización de progenitores de papa en base a aptitud combinatoria y heterosis para la búsqueda de resistencia a Phytophthora infestans
The efficient control of Phytopthora infestans results from the selection of genotypes with the capacity of transferring resistance. In order to characterize potato parents based on combining ability and heterosis for their resistance to P. infestans, six parents were cros...
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Facultad de Ciencias Agrarias-UNCuyo
2016
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| Acceso en línea: | https://revistas.uncu.edu.ar/ojs3/index.php/RFCA/article/view/3216 |
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I11-R107article-32162022-11-09T18:10:58Z Characterization of potato parents based on combining ability and heterosis for searching resistance to Phytophthora infestans Caracterización de progenitores de papa en base a aptitud combinatoria y heterosis para la búsqueda de resistencia a Phytophthora infestans Andrade, Alberto Juan Capezio, Silvia Beatriz Huarte, Marcelo Atilio resistencia Phytophtora infestans AUDPC heterobeltiosis heterosis específica Phytophtora infestans resistance AUDPC heterobeltiosis specific heterosis The efficient control of Phytopthora infestans results from the selection of genotypes with the capacity of transferring resistance. In order to characterize potato parents based on combining ability and heterosis for their resistance to P. infestans, six parents were crossed (Libertas, Jaspe, Chotañawi, Pollerita, Robusta and INRA 92T.114.76). The 15 tuber families of second clonal generation obtained were inoculated with P. infestans in Balcarce (Buenos Aires, Argentina) and evaluated under randomized complete block design with two replicates. Area Under Disease Progress Curve (AUDPC) was recorded for each genotype; general and specific combining ability, average heterosis, heterobeltiosis, specific heterosis and broad-sense (H2) and narrow (h2) heritability were estimated. Combining ability was significant. The Robusta parent reduced the disease estimated by AUDPC; Robusta x Chotañawi was the best hybrid, as observed by the high negative value of specific combining ability. One third of the crosses expressed significant additive effects for all levels of heterosis. Hs values showed equivalence with the percent reduction of AUDPC. The obtained heritabilities (H2=0.63 and h2=0.54) indicated that selection based on the low AUDPC values can be effective. Robusta parent and Robusta x Chotañawi cross are good genotypes for transmitting resistance to P. infestans. Controlar efectivamente a Phytophthora infestans, deviene de seleccionar genotipos con capacidad de transmitir resistencia. Con el objeto de caracterizar progenitores de papa en base a aptitud combinatoria y heterosis para resistencia a P. infestans, se cruzaron seis variedades (Libertas, Jaspe, Chotañawi, Pollerita, Robusta e INRA92T.114.76). Quince familias de tubérculos de segunda generación clonal, obtenidas, fueron inoculadas con P. infestans en Balcarce (Buenos Aires, Argentina) y evaluadas bajo diseño en bloques completos aleatorizados con dos repeticiones. Se midió área bajo la curva del progreso de la enfermedad (AUDPC). Se estimó Aptitud Combinatoria (AC) general y específica, heterosis media, heterobeltiosis, heterosis específica (Hs) y heredabilidad en sentido amplio (H2) y estricto (h2). La AC fue significativa. El progenitor Robusta disminuyó la enfermedad estimada por AUDPC, el valor negativo grande de AC específica señaló mejor híbrido a Robusta x Chotañawi. Un tercio de las cruzas expresaron aditividad en todos los niveles de heterosis. Los valores de Hs manifestaron equivalencia con el porcentaje de disminución del AUDPC. Las heredabilidades (H2=0,63 y h2=0,54) indicaron que la selección por bajo AUDPC puede ser efectiva. El progenitor Robusta y la cruza Robusta x Chotañawi, conformaron los genotipos superiores recomendados para transferir resistencia a P. infestans. Facultad de Ciencias Agrarias-UNCuyo 2016-06-30 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revistas.uncu.edu.ar/ojs3/index.php/RFCA/article/view/3216 Revista de la Facultad de Ciencias Agrarias UNCuyo; Vol. 48 No. 1 (2016): January-June; 9-20 Revista de la Facultad de Ciencias Agrarias UNCuyo; Vol. 48 Núm. 1 (2016): Enero-Junio; 9-20 1853-8665 0370-4661 spa https://revistas.uncu.edu.ar/ojs3/index.php/RFCA/article/view/3216/2326 |
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Universidad Nacional de Cuyo |
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Revistas en línea |
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Revista de la Facultad de Ciencias Agrarias |
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Revista de la Facultad de Ciencias Agrarias |
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R-107 |
| language |
spa |
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Online |
| author |
Andrade, Alberto Juan Capezio, Silvia Beatriz Huarte, Marcelo Atilio |
| spellingShingle |
Andrade, Alberto Juan Capezio, Silvia Beatriz Huarte, Marcelo Atilio Caracterización de progenitores de papa en base a aptitud combinatoria y heterosis para la búsqueda de resistencia a Phytophthora infestans resistencia Phytophtora infestans AUDPC heterobeltiosis heterosis específica Phytophtora infestans resistance AUDPC heterobeltiosis specific heterosis |
| author_facet |
Andrade, Alberto Juan Capezio, Silvia Beatriz Huarte, Marcelo Atilio |
| author_sort |
Andrade, Alberto Juan |
| title |
Caracterización de progenitores de papa en base a aptitud combinatoria y heterosis para la búsqueda de resistencia a Phytophthora infestans |
| title_short |
Caracterización de progenitores de papa en base a aptitud combinatoria y heterosis para la búsqueda de resistencia a Phytophthora infestans |
| title_full |
Caracterización de progenitores de papa en base a aptitud combinatoria y heterosis para la búsqueda de resistencia a Phytophthora infestans |
| title_fullStr |
Caracterización de progenitores de papa en base a aptitud combinatoria y heterosis para la búsqueda de resistencia a Phytophthora infestans |
| title_full_unstemmed |
Caracterización de progenitores de papa en base a aptitud combinatoria y heterosis para la búsqueda de resistencia a Phytophthora infestans |
| title_sort |
characterization of potato parents based on combining ability and heterosis for searching resistance to phytophthora infestans |
| description |
The efficient control of Phytopthora infestans results from the selection of genotypes with the capacity of transferring resistance. In order to characterize potato parents based on combining ability and heterosis for their resistance to P. infestans, six parents were crossed (Libertas, Jaspe, Chotañawi, Pollerita, Robusta and INRA 92T.114.76). The 15 tuber families of second clonal generation obtained were inoculated with P. infestans in Balcarce (Buenos Aires, Argentina) and evaluated under randomized complete block design with two replicates. Area Under Disease Progress Curve (AUDPC) was recorded for each genotype; general and specific combining ability, average heterosis, heterobeltiosis, specific heterosis and broad-sense (H2) and narrow (h2) heritability were estimated. Combining ability was significant. The Robusta parent reduced the disease estimated by AUDPC; Robusta x Chotañawi was the best hybrid, as observed by the high negative value of specific combining ability. One third of the crosses expressed significant additive effects for all levels of heterosis. Hs values showed equivalence with the percent reduction of AUDPC. The obtained heritabilities (H2=0.63 and h2=0.54) indicated that selection based on the low AUDPC values can be effective. Robusta parent and Robusta x Chotañawi cross are good genotypes for transmitting resistance to P. infestans. |
| publisher |
Facultad de Ciencias Agrarias-UNCuyo |
| publishDate |
2016 |
| url |
https://revistas.uncu.edu.ar/ojs3/index.php/RFCA/article/view/3216 |
| topic |
resistencia Phytophtora infestans AUDPC heterobeltiosis heterosis específica Phytophtora infestans resistance AUDPC heterobeltiosis specific heterosis |
| topic_facet |
resistencia Phytophtora infestans AUDPC heterobeltiosis heterosis específica Phytophtora infestans resistance AUDPC heterobeltiosis specific heterosis |
| work_keys_str_mv |
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| _version_ |
1800220910752366592 |
