It is a fundamental work to identify pear species and cultivars for conservation, studies and use of germplasm resources as well as plant variety protection. For not a short time, morphology, pollen morphology, cytology, iso-enzyme are the main identifying techniques on pear species and cultivars. The DNA marker technique which is the most effective method is a new approach to identify pear species and cultivars. All of the methods are introduced in this paper as well as the research progress and the sequen...
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