Characterization of potato parents based on combining ability and heterosis for searching resistance to Phytophthora infestans

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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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Autores principales: Andrade, Alberto Juan, Capezio, Silvia Beatriz, Huarte, Marcelo Atilio
Formato: Artículo revista
Lenguaje:Español
Publicado: Facultad de Ciencias Agrarias-UNCuyo 2016
Materias:
resistencia Phytophtora infestans
AUDPC
heterobeltiosis
heterosis específica
Phytophtora infestans resistance
specific heterosis
Acceso en línea:https://revistas.uncu.edu.ar/ojs3/index.php/RFCA/article/view/3216
Aporte de:
Revista de la Facultad de Ciencias Agrarias UNCuyo de Universidad Nacional de Cuyo
id I11-R107article-3216
record_format ojs
institution Universidad Nacional de Cuyo
institution_str I-11
repository_str R-107
container_title_str Revista de la Facultad de Ciencias Agrarias UNCuyo
language Español
format Artículo revista
topic resistencia Phytophtora infestans
AUDPC
heterobeltiosis
heterosis específica
Phytophtora infestans resistance
AUDPC
heterobeltiosis
specific heterosis
spellingShingle resistencia Phytophtora infestans
AUDPC
heterobeltiosis
heterosis específica
Phytophtora infestans resistance
AUDPC
heterobeltiosis
specific heterosis
Andrade, Alberto Juan
Capezio, Silvia Beatriz
Huarte, Marcelo Atilio
Characterization of potato parents based on combining ability and heterosis for searching resistance to Phytophthora infestans
topic_facet resistencia Phytophtora infestans
AUDPC
heterobeltiosis
heterosis específica
Phytophtora infestans resistance
AUDPC
heterobeltiosis
specific heterosis
author Andrade, Alberto Juan
Capezio, Silvia Beatriz
Huarte, Marcelo Atilio
author_facet Andrade, Alberto Juan
Capezio, Silvia Beatriz
Huarte, Marcelo Atilio
author_sort Andrade, Alberto Juan
title Characterization of potato parents based on combining ability and heterosis for searching resistance to Phytophthora infestans
title_short Characterization of potato parents based on combining ability and heterosis for searching resistance to Phytophthora infestans
title_full Characterization of potato parents based on combining ability and heterosis for searching resistance to Phytophthora infestans
title_fullStr Characterization of potato parents based on combining ability and heterosis for searching resistance to Phytophthora infestans
title_full_unstemmed Characterization of potato parents based on combining ability and heterosis for searching resistance to 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
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first_indexed 2022-06-20T13:52:54Z
last_indexed 2022-06-20T13:52:54Z
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