Genetic Diversity of Miscanthus floridulus ( Poaceae ) from Guangdong by Intersimple Sequence Repeat ( ISSR )
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    Abstract:

    The genetic diversity of 215 individuals of Miscanthus floridulus from 13 natural populations distributed in Guangdong Province was investigated by using intersimple sequence repeat (ISSR) techniques. A total of 81 unambiguous and repetitious bands were scored by 9 primers. The results showed that the genetic diversity of M. floridulus was high, at species level, percentage of polymorphic loci (PPB) was 93.83%, Nei's gene diversity (He) for 0.3969, and Shannon's information index (Hsp) for 0.5724; while at population level, PPB=81.91%, He=0.3015 and Shannon's information index (Hpop)=0.4460. The coefficient of genetic differentiation among populations (Gst) was 0.2379, and gene flow among populations (Nm) was 1.6018. The AMOVA analysis showed that 79.56% of the total genetic variation within populations and the rest (20.44%) partitioned among populations. No significant correlation was found between geographical and genetic distance (r=-0.2811, P=0.9590).

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李婧,夏念和.广东省五节芒遗传多样性的ISSR分析[J].热带亚热带植物学报,2011,19(6):506~512

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History
  • Received:April 07,2011
  • Revised:May 15,2011
  • Adopted:May 23,2011
  • Online: November 18,2011
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