关键词: 香稻, SSR标记, 遗传多样性, 聚类分析, 功能基因

Abstract: Abstract: Genetic diversity of 32 aromatic rice cultivars were analyzed by 60 SSR primers covered on 12 rice chromosomes. A total of 188 gene locus were detected, among of which 126 gene locus were effective number of alleles. The average number of gene locus per SSR locus was 3.13 with a ranged from 2 to 6. The value of allelic polymorphism information content (PIC) ranged from 0.116 to 0.744, on an average, 0.467±0.023 per SSR maker. The average similarities coefficient was 0.697±0.0035 with a ranged from 0.51 to 0.96. UPGMA cluster analysis showed that the 32 cultivars could be classified into indica and japonica distinct classes at similarities coefficient 0.58, which was generally coincident with pedigree analysis. The results indicated that SSR markers could be employed in diversity identification for aromatic varieties and in exploration for aromatic rice breeding.

Key words: Aromatic rice, SSR markers, Genetic diversity, Cluster analysis