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- W2392904305 abstract "In order to explore on the genetic diversity and genetic evolution among cultivated types and wild species in the genus Nicotiana,96 tobacco accessions from China and abroad were studied with ISSR and SRAP analysis.Both molecular markers revealed high genetic diversity among species of Nicotiana(genetic similarity = 0.28-0.58) and low genetic diversity among 91 cultivated tobacco lines(Genetic Similarity = 0.61-0.99).Genetic differentiation index(GST) among species of Nicotiana was 0.83.The order of genetic diversity index within different cultivated types was cured tobaccosuncured tobaccoburley tobaccooriental tobacco.When the similarity coefficient was 0.67 as the cutting line,the cluster results of 96 tobacco accessions based on SRAP and ISSR were as follows:(1) UPGMA analysis showed that all 91 culture varieties clustered into one group separating from N.rustica,N.glutinosa,N.repanda,N.gossei,N.suaveolens.(2) The cured tobacco has close genetic relationship with suncured tobacco,and oriental tobacco was far away from N.rustica.There was little genetic differentiation between cultivated tobacco lines from China and those from other countries.(3) The correlation coefficient between genetic distance matrixes based on ISSR and SRAP was 0.68,indicating that the basic results of the two types of markers are consistent.In conclusion,ISSR and SRAP are efficient in generating more accurate information on genetic background,relationship and evolution of tobacco germplasm.The results of this research would be favorable for further practices in tobacco breeding." @default.
- W2392904305 created "2016-06-24" @default.
- W2392904305 creator A5002836131 @default.
- W2392904305 date "2012-01-01" @default.
- W2392904305 modified "2023-09-23" @default.
- W2392904305 title "Genetic Diversity and Evolutionary Analysis of Tobacco(Nicotiana tabacum L.) Germplasm Resources Based on ISSR and SRAP Markers" @default.
- W2392904305 hasPublicationYear "2012" @default.
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