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Plant and Cell Physiology 2004 45(12):1863-1869; doi:10.1093/pcp/pch204
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© 2004 Oxford University Press

Short Communication

Development of Q-chromosome-specific DNA Markers in Tobacco and Their Use for Identification of a Tobacco Monosomic Line

Takahiro Tezuka, Katsura Onosato, Saori Hijishita and Wataru Marubashi1

School of Agriculture, Ibaraki University, Ami, Ibaraki, 300-0393 Japan

We developed seven Q-chromosome-specific DNA markers in Nicotiana tabacum by random amplified polymorphic DNA (RAPD) and inter-simple sequence repeat (ISSR) analysis using two hybrid lines, and we were able to identify tobacco monosomic plants among F1 progeny derived from the cross N. tabacum Haplo-Q x N. tabacum cv. Samsun NN using Q-chromosome-specific DNA markers. Based on the results, we discuss the roles of the Q chromosome in embryo sac development and embryogenesis. Here, we propose a new method for identifying DNA markers for a particular chromosome in the genus Nicotiana.

1 Corresponding author: E-mail, marubasi{at}mx.ibaraki.ac.jp; Fax, +81-29-888-8644.


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