关键词: 嗅觉反应, 嗅觉反应

Abstract: In order to reveal genetic diversity of coconut (Cocos nucifera L.) germplasm resources in Yunnan and promote their effective utilization, 60 accessions of coconut germplasm collected from different locations in Yunnan were used as experimental materials and the ISSR molecular marker technique was employed to analyze their genetic diversity. The result showed that 272 loci were amplified from the accessions by means of 27 ISSR primers, and 230 loci were polymorphic, the percentage of polymorphic loci was 84.56%. PIC index of the 27 primers was 0.85. SM similarity coefficient averaged out at 0.664. According to the SM similarity coefficient, a dendrogram for the accessions was obtained by using UPGMA method of the software NTSYSpc2.10e, and the 60 accessions were clustered into 3 groups (A, B and C). Among them, group A was composed entirely of local germplasm separated from others, group C included not only some of the local germplasm and but also others from other places. The results revealed that there were rich genetic diversity among the coconut germplasm resources in Yunnan, and suggested the relation of independence and relevance all existed in coconut germplasm in Yunnan and other places. These results also would provide a reference for further research and development of coconut germplasm resources in Yunnan.