期刊
CEREAL RESEARCH COMMUNICATIONS
卷 34, 期 2-3, 页码 879-886出版社
SPRINGER HEIDELBERG
DOI: 10.1556/CRC.34.2006.2-3.215
关键词
maize inbred lines; DNA methylation polymorphism; ISSR fingerprinting; molecular marker
类别
DNA methylation polymorphism among nine elite maize inbred lines was assessed by inter-simple sequence repeat (ISSR) fingerprinting on intact DNA and DNA digested by either of a pair of methylation-sensitive isoschizomers, HpaII and MspI. It was found that, along with distinct genetic differentiation, extensive DNA methylation polymorphism exists among the nine inbred lines. The line-specific methylation patterns are homogeneous within each line, indicating their usefulness as molecular markers for cultivar identification. DNA sequences underlying the DNA methylation variations include a high proportion of coding genes. Cluster analysis, however, indicates the existence of incongruence between DNA methylation polymorphism and known-pedigree of the maize inbred lines.
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