Inheritance of partial resistance to Septoria tritici in wheat (Triticum aestivum): limitation of pycnidia and spore production

The aim of this work was to study the gene effects of two components of partial resistance (pycnidia.cm-2 and spore production.mL -1) in a semi-diallel cross of four wheat cultivars differing in susceptibility to Septoria tritici. The F1 trials were carried out in two environments (greenhouse and fi...

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Autores principales: Simón, María Rosa, Cordo, Cristina Alicia
Formato: Articulo
Lenguaje:Inglés
Publicado: 1997
Materias:
Botánica
Ciencias Agrarias
Septoria tritici
Gene action
Resistance components
Spore number
Pycnidia number
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/122870
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-122870
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Botánica
Ciencias Agrarias
Septoria tritici
Gene action
Resistance components
Spore number
Pycnidia number
spellingShingle Botánica
Ciencias Agrarias
Septoria tritici
Gene action
Resistance components
Spore number
Pycnidia number
Simón, María Rosa
Cordo, Cristina Alicia
Inheritance of partial resistance to Septoria tritici in wheat (Triticum aestivum): limitation of pycnidia and spore production
topic_facet Botánica
Ciencias Agrarias
Septoria tritici
Gene action
Resistance components
Spore number
Pycnidia number
description The aim of this work was to study the gene effects of two components of partial resistance (pycnidia.cm-2 and spore production.mL -1) in a semi-diallel cross of four wheat cultivars differing in susceptibility to Septoria tritici. The F1 trials were carried out in two environments (greenhouse and field). The material was inoculated at the beginning of tillering (stage 21, Zadoks scale) and evaluations were performed on the fourth leaf. There was a significant interaction between crosses and environments for pycnidia.cm-2. A separate ANOVA was performed for both traits. Crosses were significant for both traits in both environments. Griffing method 4, model 1 was used to test general and specific combining ability. General combining ability mean square was usually larger than the specific combining ability mean square. The presence of significant additive variance indicates the possibility of selecting for both traits in order to obtain partial resistant cultivars. However, it is necessary to consider that for pycnidia.cm-2, the dominance variance was also large, indicating that selection for this trait should be delayed to advanced generations. The environmental influence is discussed.
format Articulo
Articulo
author Simón, María Rosa
Cordo, Cristina Alicia
author_facet Simón, María Rosa
Cordo, Cristina Alicia
author_sort Simón, María Rosa
title Inheritance of partial resistance to Septoria tritici in wheat (Triticum aestivum): limitation of pycnidia and spore production
title_short Inheritance of partial resistance to Septoria tritici in wheat (Triticum aestivum): limitation of pycnidia and spore production
title_full Inheritance of partial resistance to Septoria tritici in wheat (Triticum aestivum): limitation of pycnidia and spore production
title_fullStr Inheritance of partial resistance to Septoria tritici in wheat (Triticum aestivum): limitation of pycnidia and spore production
title_full_unstemmed Inheritance of partial resistance to Septoria tritici in wheat (Triticum aestivum): limitation of pycnidia and spore production
title_sort inheritance of partial resistance to septoria tritici in wheat (triticum aestivum): limitation of pycnidia and spore production
publishDate 1997
url http://sedici.unlp.edu.ar/handle/10915/122870
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AT cordocristinaalicia inheritanceofpartialresistancetoseptoriatriticiinwheattriticumaestivumlimitationofpycnidiaandsporeproduction
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