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A New Method Based on SNP of NrDNA-ITS to Identify Saccharum Spontaneum and Its Progeny in the Genus Saccharum

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Journal PLoS One
Date 2018 May 17
PMID 29768494
Citations 3
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Abstract

The identification of germplasm resources is an important aspect of sugarcane breeding. The aim of this study was to introduce a new method for identifying Saccharum spontaneum and its progeny. First, we cloned and sequenced nuclear ribosomal DNA internal transcribed spacer (nrDNA-ITS) sequences from 20 Saccharum germplasms. Analysis of these nrDNA-ITS sequences showed a stable mutation at base 89. Primers (FO13, RO13, FI16, and RI16) were then designed for tetra-primer amplification refractory mutation system (ARMS) PCR based on mutations at base 89 of the nrDNA-ITS sequence. An additional 71 Saccharum germplasms were identified using this tetra-primer ARMS PCR method, which confirmed that the method using the described primers successfully identified Saccharum spontaneum and progeny. These results may help improve the efficiency of modern molecular breeding of sugarcane and lay a foundation for identification of sugarcane germplasms and the relationships among them.

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