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Study on the Phenotype Biodiversity of Xinjiang Wild Apples (Malus siev ersii)

Liu Jing, Zhou Qinghe, Sun Haiwei, Qiu Zhilin, Wang Yuwen, and Sun Zhongxu(Mount Tai institute of Forestry Science and Research , Tai'an, Shandong 271000 China; College of Horticulture , Shandong Agricultural University, Tai'an,Shandong 271018 China; Mount Tai Administration Committee , Tai'an, Shandong 271000 China)  
Investigation, conducted at Huocheng, Xinjiang Autonomous Region, revealed that all characteristics of Xinjiang wild apples appeared in a fair variation. Results indicated that, every characteristic exists biodiversity; most coefficients of variation of characteristics were larger than 0.2%; there were a great number of gene types among which two characteristics (the resistance and crown density) were in a significant variation. In addition, different ecological conditions affected the coefficient and variation rate of different characteristics. Cluster analysis proved that the characteristic variation was in a close relation to the geographic locations where the wild apples grew. Xinjiang wild apples [Malus sieversii (Ldb.) Roem.] are growing in a complex ecological conditions. Its whole community is a great gene pool, a treasure of germplasm resource.
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