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Genetic characterization of Moroccan and the exotic bread wheat cultivars using functional and random DNA markers linked to the agronomic traits for genomics-assisted improvement

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Title Genetic characterization of Moroccan and the exotic bread wheat cultivars using functional and random DNA markers linked to the agronomic traits for genomics-assisted improvement
 
Creator Henkrar, Fatima
 
Contributor El-Haddoury, Jamal
Ouabbou, Hassan
Udupa, Sripada M.
 
Subject genetic
Wheat
 
Description Genetic characterization, diversity analysis and
estimate of the genetic relationship among varieties using
functional and random DNA markers linked to agronomic
traits can provide relevant guidelines in selecting parents
and designing new breeding strategies for marker-assisted
wheat cultivar improvement. Here, we characterize 20
Moroccan and 19 exotic bread wheat (Triticum aestivum
L.) cultivars using 47 functional and 7 linked random DNA
markers associated with 21 loci of the most important traits
for wheat breeding. The functional marker analysis
revealed that 35, 45, and 10 % of the Moroccan cultivars,
respectively have the rust resistance genes (Lr34/Yr18/
Pm38), dwarfing genes (Rht1b or Rht2b alleles) and the
leaf rust resistance gene (Lr68). The marker alleles for
genes Lr37/Yr17/Sr38, Sr24 and Yr36 were present only in
the exotic cultivars and absent in Moroccan cultivars. 25 %
of cultivars had 1BL.1RS translocation. 70 % of the wheat
cultivars had Ppo-D1a and Ppo-A1b associated with low
polyphenol oxidase activity. 10 % of cultivars showed
presence of a random DNA marker allele (175 bp) linked
to Hessian fly resistance gene H22. The majority of the
Moroccan cultivars were carrying alleles that impart good
bread making quality. Neighbor joining (NJ) and principal
coordinate analysis based on the marker data revealed a
clear differentiation between elite Moroccan and exotic
wheat cultivars. The results of this study are useful for
selecting suitable parents for making targeted crosses in
marker-assisted wheat breeding and enhancing genetic
diversity in the wheat cultivars.
 
Date 2016-04-04
2017-02-09T16:52:17Z
2017-02-09T16:52:17Z
 
Type Journal Article
 
Identifier https://mel.cgiar.org/reporting/download/hash/HH6Esjgu
Fatima Henkrar, Jamal El-Haddoury, Hassan Ouabbou, Sripada M. Udupa. (4/4/2016). Genetic characterization of Moroccan and the exotic bread wheat cultivars using functional and random DNA markers linked to the agronomic traits for genomics-assisted improvement. 3 Biotech, 6.
https://hdl.handle.net/20.500.11766/5652
Open access
 
Language en
 
Rights CC-BY-NC-4.0
 
Format PDF
 
Publisher SpringerOpen
 
Source 3 Biotech;6,(2016)