Genetic relationships among wheat genotypes, as revealed by microsatellite markers and pedigree analysis

• Autorzy: Sud S , Bains N.S. , Nanda G.S.
• Języki publikacji: EN

Abstrakty

EN

Genetic relationships among 20 elite wheat genotypes were studied using microsatellite markers and pedigree analysis. A total of 93 polymorphic bands were obtained with 25 microsatellite primer pairs. Coefficient of parentage (COP) values were calculated using parentage information at the expansion level of 5. The pedigree-based similarity (mean 0.115, range 0.00-0.53) was lower than the similarity assessed using microsatellite markers (mean 0.70, range 0.47-0.91). Similarity estimates were used to construct dendrograms by using the unweighted pair-group method with arithmetic averages (UPGMA). Clustering of genotypes in respect of marker-based similarity revealed two groups. Genotype PBW442 diverged and appeared as distinct from all other genotypes in both marker-based and pedigree-based analysis. The correlation of COP values with genetic similarity values based on microsatellite markers is low (r = 0.285,p < 0.05). The results indicate a need to develop wheat varieties with a diverse genetic background and to incorporate new variability into the existing wheat gene pool.

• Wydawca: -
• Czasopismo: Journal of Applied Genetics
• Rocznik: 2005
• Tom: 46
• Numer: 4
• Opis fizyczny: p.375-379,fig.,ref.

Twórcy

autor

Sud S

• Bhabha Atomic Research Station, Trombay, Mumbai-40085, India

autor

Bains N.S.

autor

Nanda G.S.

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