RAPD标记在紫菜遗传多样性检测和种质鉴定中的应用

用ＲＡＰＤ技术对４类紫菜（Ｐｏｒｐｈｙｒａ ｙｅｚｏｅｎｓｉｓ，Ｐ．ｈａｉｔａｎｅｎｓｉｓ，Ｐ．ｋａｔａｄｎｉ ｖａｒ．ｈｅｍｉｐｈｙｌｌａ和Ｐ．ｏｌｉｇｏｓｐｅｒｍａｔａｎｇｉａ）的１５个无性系丝状体进行了遗传多样履分析，从５０个ＯＰＥＲＯＮ引物中经过初筛，其中６个引物可以扩增出稳定的可重复的图谱。这６个引物共扩增出了６０条带，多态性比例达９７．１％。根据ＲＡＰＤ结果将这１５个无性了紫菜的ＤＮＡ

The Application of RAPD Markers in Diversity Detection and Variety Identification of Porphyra

RAPD (random amplified polymorphic DNA) markers were generated from filaments of 15 Porphyra lines representing four important groups, P. yezoensis, P. haitanensis, P. katadai var. hemiphylla and P. oligospermatangia . Among the total 69 fragments generated by 6 selected primers (among 50 primers), 67 appeared to be polymorphic (97.1%). Cluster analysis based on the RAPD results was performed. The 15 Porphyra lines were divided into 3 groups. This result was consistent with that from taxonomy analysis. A DNA fingerprinting based on 8 bands amplified with OPN_02 and OPJ_18 was constructed and might be used in Porphyra variety identification. Five specific RAPD fragments of 5 Porphyra lines were isolated and cloned into pGEM_T easy vector. These five RAPD fragments may be useful in germplasm identification and property protection of Porphyra .