Genetic diversity reduction in improved durum wheat cultivars of Morocco as revealed by microsatellite markers

Detalhes bibliográficos
Autor(a) principal: Henkrar,Fatima
Data de Publicação: 2016
Outros Autores: El-Haddoury,Jamal, Ouabbou,Hassan, Nsarellah,Nasserlehaq, Iraqi,Driss, Bendaou,Najib, Udupa,Sripada Mahabala
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Scientia Agrícola (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000200134
Resumo: ABSTRACT It has been argued that genetic diversity in crop varieties has been on the decline in recent times due to plant breeding. This can have serious consequences for both the genetic vulnerability of crops and their plasticity when responding to changes in production environments. It is, therefore, vital for plant breeding programs to maintain sufficient diversity in the cultivars deployed for multi-period cultivation. In this study, to understand the temporal genetic diversity in durum wheat, 21 improved durum wheat cultivars released in Morocco, since 1956 and five exotic cultivars currently used in crossing programs were analyzed using 13 microsatellite markers. The analysis revealed a total of 44 alleles and average genetic diversity of 0.485 with genetic distances ranging from 0.077 to 0.846 at 13 microsatellite loci in Moroccan durum wheat cultivars. All the durum cultivars of Morocco could be distinguished using the 13 microsatellite markers. The total number of alleles and unique alleles were highest in cultivars developed before 1990, decreasing in cultivars developed during the 1990s and 2000s, indicating that recent durum breeding efforts have reduced allelic richness in recent cultivars. Thus, deployment of exotic durum wheat lines in breeding programs could enhance genetic diversity in durum wheat cultivars.
id USP-18_bb3252f176d1ce3cd762f790086a4369
oai_identifier_str oai:scielo:S0103-90162016000200134
network_acronym_str USP-18
network_name_str Scientia Agrícola (Online)
repository_id_str
spelling Genetic diversity reduction in improved durum wheat cultivars of Morocco as revealed by microsatellite markersTriticum turgidum L. subsp. durumcultivar characterizationSSR markersABSTRACT It has been argued that genetic diversity in crop varieties has been on the decline in recent times due to plant breeding. This can have serious consequences for both the genetic vulnerability of crops and their plasticity when responding to changes in production environments. It is, therefore, vital for plant breeding programs to maintain sufficient diversity in the cultivars deployed for multi-period cultivation. In this study, to understand the temporal genetic diversity in durum wheat, 21 improved durum wheat cultivars released in Morocco, since 1956 and five exotic cultivars currently used in crossing programs were analyzed using 13 microsatellite markers. The analysis revealed a total of 44 alleles and average genetic diversity of 0.485 with genetic distances ranging from 0.077 to 0.846 at 13 microsatellite loci in Moroccan durum wheat cultivars. All the durum cultivars of Morocco could be distinguished using the 13 microsatellite markers. The total number of alleles and unique alleles were highest in cultivars developed before 1990, decreasing in cultivars developed during the 1990s and 2000s, indicating that recent durum breeding efforts have reduced allelic richness in recent cultivars. Thus, deployment of exotic durum wheat lines in breeding programs could enhance genetic diversity in durum wheat cultivars.Escola Superior de Agricultura "Luiz de Queiroz"2016-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000200134Scientia Agricola v.73 n.2 2016reponame:Scientia Agrícola (Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/0103-9016-2015-0054info:eu-repo/semantics/openAccessHenkrar,FatimaEl-Haddoury,JamalOuabbou,HassanNsarellah,NasserlehaqIraqi,DrissBendaou,NajibUdupa,Sripada Mahabalaeng2016-03-18T00:00:00Zoai:scielo:S0103-90162016000200134Revistahttp://revistas.usp.br/sa/indexPUBhttps://old.scielo.br/oai/scielo-oai.phpscientia@usp.br||alleoni@usp.br1678-992X0103-9016opendoar:2016-03-18T00:00Scientia Agrícola (Online) - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Genetic diversity reduction in improved durum wheat cultivars of Morocco as revealed by microsatellite markers
title Genetic diversity reduction in improved durum wheat cultivars of Morocco as revealed by microsatellite markers
spellingShingle Genetic diversity reduction in improved durum wheat cultivars of Morocco as revealed by microsatellite markers
Henkrar,Fatima
Triticum turgidum L. subsp. durum
cultivar characterization
SSR markers
title_short Genetic diversity reduction in improved durum wheat cultivars of Morocco as revealed by microsatellite markers
title_full Genetic diversity reduction in improved durum wheat cultivars of Morocco as revealed by microsatellite markers
title_fullStr Genetic diversity reduction in improved durum wheat cultivars of Morocco as revealed by microsatellite markers
title_full_unstemmed Genetic diversity reduction in improved durum wheat cultivars of Morocco as revealed by microsatellite markers
title_sort Genetic diversity reduction in improved durum wheat cultivars of Morocco as revealed by microsatellite markers
author Henkrar,Fatima
author_facet Henkrar,Fatima
El-Haddoury,Jamal
Ouabbou,Hassan
Nsarellah,Nasserlehaq
Iraqi,Driss
Bendaou,Najib
Udupa,Sripada Mahabala
author_role author
author2 El-Haddoury,Jamal
Ouabbou,Hassan
Nsarellah,Nasserlehaq
Iraqi,Driss
Bendaou,Najib
Udupa,Sripada Mahabala
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Henkrar,Fatima
El-Haddoury,Jamal
Ouabbou,Hassan
Nsarellah,Nasserlehaq
Iraqi,Driss
Bendaou,Najib
Udupa,Sripada Mahabala
dc.subject.por.fl_str_mv Triticum turgidum L. subsp. durum
cultivar characterization
SSR markers
topic Triticum turgidum L. subsp. durum
cultivar characterization
SSR markers
description ABSTRACT It has been argued that genetic diversity in crop varieties has been on the decline in recent times due to plant breeding. This can have serious consequences for both the genetic vulnerability of crops and their plasticity when responding to changes in production environments. It is, therefore, vital for plant breeding programs to maintain sufficient diversity in the cultivars deployed for multi-period cultivation. In this study, to understand the temporal genetic diversity in durum wheat, 21 improved durum wheat cultivars released in Morocco, since 1956 and five exotic cultivars currently used in crossing programs were analyzed using 13 microsatellite markers. The analysis revealed a total of 44 alleles and average genetic diversity of 0.485 with genetic distances ranging from 0.077 to 0.846 at 13 microsatellite loci in Moroccan durum wheat cultivars. All the durum cultivars of Morocco could be distinguished using the 13 microsatellite markers. The total number of alleles and unique alleles were highest in cultivars developed before 1990, decreasing in cultivars developed during the 1990s and 2000s, indicating that recent durum breeding efforts have reduced allelic richness in recent cultivars. Thus, deployment of exotic durum wheat lines in breeding programs could enhance genetic diversity in durum wheat cultivars.
publishDate 2016
dc.date.none.fl_str_mv 2016-04-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000200134
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000200134
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0103-9016-2015-0054
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Escola Superior de Agricultura "Luiz de Queiroz"
publisher.none.fl_str_mv Escola Superior de Agricultura "Luiz de Queiroz"
dc.source.none.fl_str_mv Scientia Agricola v.73 n.2 2016
reponame:Scientia Agrícola (Online)
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Scientia Agrícola (Online)
collection Scientia Agrícola (Online)
repository.name.fl_str_mv Scientia Agrícola (Online) - Universidade de São Paulo (USP)
repository.mail.fl_str_mv scientia@usp.br||alleoni@usp.br
_version_ 1748936463864561664