Machilus Thunbergii Geographical Distribution Of Morphological Variation Research

Machilus thunbergii Sieb. Et Zucc. is the third treasure protected species, good in bothecological and economic value. Due to the destruction of the ecological environment, hasnow become a vulnerable species. To protect biodiversity, make the red nan this realizesustainable utilization of species resources, therefore, geographical distribution andmorphological characters of red nan variation patterns were studied. In order to red nan ingenetic diversity and domesticated provides the basis of theoretical basis. Prophase of rednan to consult the related literature, the test data Yu Chen herbarium, nanjing herbarium,lushan mountain botanical garden, zhejiang forestry university herbarium, prestigious anddigital herbarium. And the red nan to carry out the necessary field work. A preliminarystudy on the geographical distribution of red nan, and use the geographic soft map drawing.Selected red nan phenotypic traits, branchlets class2, winter bud class traits of192class,leaf traits, spend nine class characters, fruit characters and11, the red nan specimens weremeasured by271, according to the morphological characters research results show that theintraspecific and interspecific red nan which produced rich variation in morphologicalshape. Due to different specimen collection time, flowering and fruiting measurement usedto study geographic variation of are not comparable. Blade type of character, the variationcoefficient is larger tip39.298%<long petiole coarse <leaf form34.153%to32.794%<30.875%tip shape. Coefficient of variation of the smallest number of leaf lateral veins, rednan this trait is more stable. To14in different parts of the red nan, leaf morphologicalcharacters of the clustering analysis, Euclidean distance64.183do combine line, can bedivided into four categories. Which the red nan of shandong and other places of red nanbiggest change, separate clustering, that has a connection with the shandong climate, butfor different parts of the red nan in geographic variation affected by environmental factorsremains to be further research.