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2007 | 48 | 4 | 337-345
Article title

Genetic diversity among cultivars, landraces and wild relatives of rice as revealed by microsatellite markers

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EN
Abstracts
EN
Genetic diversity among 35 rice accessions, which included 19 landraces, 9 cultivars and 7 wild relatives, was investigated by using microsatellite (SSR) markers distributed across the rice genome. The mean number of alleles per locus was 4.86, showing 95.2% polymorphism and an average polymorphism information content of 0.707. Cluster analysis based on microsatellite allelic diversity clearly demarcated the landraces, cultivars and wild relatives into different groups. The allelic richness computed for the clusters indicated that genetic diversity was the highest among wild relatives (0.436), followed by landraces (0.356), and the lowest for cultivars. Allelic variability among the SSR markers was high enough to categorize cultivars, landraces and wild relatives of the rice germplasm, and to catalogue the genetic variability observed for future use. The results also suggested the necessity to introgress genes from landraces and wild relatives into cultivars, for cultivar improvement.
Discipline
Year
Volume
48
Issue
4
Pages
337-345
Physical description
References
Document Type
ARTICLE
Publication order reference
S. Ganesh Ram, Centre for Plant Breeding and Genetics, Tamil Nadu Agricultural University, Coimbatore 641 003, India
YADDA identifier
bwmeta1.element.element-from-psjc-e9558eb0-197e-345e-9b89-607134dd3f75
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