Abstract:

According to the testing theory and technology of Distinctness, Uniformity and Stability of New Varieties of Plants, in this paper，the subject, selection and adoption of characteristics, states of expression and selection of example varieties, assessment of DUS of the Testing guidelines for Lettuce(Lactuca sativa L.) were elucidated in detail. The preparation of DUS Test Guidelines for Lettuce will have important significance both of for promoting the development of Plant variety Protection(PVP) and increasing the status of international PVP fields for China.