Genetic relatedness among cultivated and wild mulberry (Moraceae : Morus) as revealed by inter-simple sequence repeat analysis in China
文献类型: 外文期刊
第一作者: Zhao Weiguo
作者: Zhao Weiguo;Zhou Zhihua;Miao Xuexia;Wang Sibao;Zhang Lin;Pan Yile;Huang Yongping
作者机构:
关键词: Morus L.;genetic diversity;inter-simple sequence repeat;relatedness
期刊名称:CANADIAN JOURNAL OF PLANT SCIENCE ( 影响因子:1.018; 五年影响因子:1.242 )
ISSN: 0008-4220
年卷期: 2006 年 86 卷 1 期
页码:
收录情况: SCI
摘要: The genetic diversity of 27 mulberry (Morus spp.) genotypes mainly from China was investigated using inter-simple sequence repeat (ISSR) markers to assist in addressing breeding objectives and conserving existing genetic resources. Of the 22 primers screened, 15 produced highly reproducible ISSR bands. Using these 15 primers, 138 discernible DNA fragments were generated with 126 (91.3%) being polymorphic, indicating considerable genetic variation among the mulberry genotypes studied. Genetic similarity ranged from 0.6014 between Yu 2 and Yu 711 to 0.9493 between Cuizhisang and Dejiang 10. The phenetic dendrogram based on ISSR data generated by the unweighed pair group method with arithmetical averages (UPGMA) method grouped the 27 accessions into two major clusters: cluster I, cultivated mulberry species (M. multicaulis Perr., M. alba Linn., M. atropurpurea oxb., M. bombycis Kiodz., M. australis Poir., M. rotundiloba Kiodz., M. alba var. pendula Dipp., M. alba var. macrophylla Loud., and M. alba var. venose Delile.); and cluster II, wild mulberry species (M. cathayana Hemsl., M. laevigata Wall., M. wittiorum Hand-Mazz., M. nigra Linn., and M. mongolica Schneid.). Our molecular analyses agree with the existing morphological classification of Morus and clarify the genetic relationships among mulberry species.
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