GrainGenes Reference Report: JAP-46-375
Reference
JAP-46-375
Title
Genetic relationships among wheat genotypes, as revealed by microsatellite markers and pedigree analysis
Journal
Journal of Applied Genetics
Year
2005
Volume
46
Pages
375-379
Author
Sud S Bains NS Nanda GS
Abstract
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.
GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture.
GrainGenes Reference Report: JAP-46-375
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GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture. | |||