Abstract
To evaluate genetic diversity in relation to rust and anthracnose disease response, ninety-six accessions were randomly selected from the core collection database of the Germplasm Research Information Network (GRIN) and characterized by a set of 40 SSR markers. The mean value of polymorphism information content (PIC) was 0.8228. Two dendrograms were generated from the molecular genetic data and field morphological data, respectively. The genetic dendrogram demonstrates that the accessions can be classified into three main clades and nine subgroups. The branched subgroups correlated very well with the locations where the accessions were collected. Geographical origin of accessions had significant influences on genetic similarity of sorghum germplasm. Out of 96 accessions, only eight accessions were highly resistant to both rust and anthracnose. All the accessions from South Africa and Mali were highly resistant to anthracnose. The information from genetic classification would be useful for choosing parents to make crosses in sorghum breeding programs and classifying sorghum accessions in germplasm management.
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Wang, M.L., Dean, R., Erpelding, J. et al. Molecular genetic evaluation of sorghum germplasm differing in response to fungal diseases: Rust (Puccinia purpurea) and anthracnose (Collectotrichum graminicola). Euphytica 148, 319–330 (2006). https://doi.org/10.1007/s10681-005-9040-0
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DOI: https://doi.org/10.1007/s10681-005-9040-0