|
Bayberry is a Chinese specialty fruit trees , rich resources in China , and widely distributed . Guangxi special geographical environment , with an abundance of wild Myrica resources . Many kinds of wild Myrica resources in Guangxi varieties divided into long-term ambiguous . To find out the Bayberry species of wild Guangxi Province , resource distribution and population genetic structure of this paper carried out the investigation of wild Myrica resources in Guangxi , the use of molecular markers to classify and genetic structure of wild populations , obtained the main results are as follows : 1 , the use of morphological identification of 75 wild Myrica resources study found abundant wild bayberry resources in Guangxi . The mainly red species or pink species , early fruit ripening , a long period of supply , and choose from six large fruit , Weijia the fine individual . ISSR markers 40 Myrica resources in Guangxi , will be divided into four main categories , bayberry, green bayberry , big Ye Qing, bayberry , hair bayberry . Bayberry species according to the geographical environment can be divided into two sub- classes . The addition of large Yeqing Yangmei as a variant of the Green Bayberry questioned . 3 cpSSR marker on 40 Myrica resources in Guangxi were studied , Myrica resources in Guangxi distribution haplotype mainly three types of B, D, E , H, I type as large Yeqing the Yangmei the unique , J- peculiar hair bayberry . The cluster analysis the sample was divided into five categories , the large Yeqing bayberry, bayberry gross distinction , Green Bayberry Bayberry is difficult to distinguish the results with ISSR analysis has a greater difference . Of large Yeqing Bayberry again as a variant of the Green Bayberry proposed questioned , speculated Green Bayberry Bayberry may have a total rent near the water chestnuts waxberry relations with Mao Bayberry source of genetic variation may . 4 the the ISSR marker study of genetic diversity and genetic structure of the 10 Guangxi wild bayberry populations were found rich genetic diversity of Guangxi bayberry . Comes mainly from population genetic variation within relatively small sources of variation among populations . Nei's genetic distance cluster analysis , wild Myrica resources in Guangxi geographical environment is divided into two categories .
|