Study On The Genetic Diversity Of Picea Koraiensis

Bio-diversity is the basis of human being living and it belongs to the natural wealth of the world. Being its basis, genetic diversity is also a source of genetic improvement. Picea koraiensis not only is one of the main species planted in the northeast part of China, but also can be used as good pulp material. Therefore, its genetic diversity being studied has very scientific significance. In this paper, twelve populations of Picea koraiensis are collected typically within its distribution from Changbai Mountains, its branches Zhangguanchai Mount, Laoyie Mount and Wanda Mount, to Xiaoxing'an Mountains and Daxing'an Mountains, with interspersed areas of internal Mogul grassland and Sikshote Mountains. The theories and methods of genetics are applied which include Population Genetics, Ecological Genetics, Physiological Genetics, Molecular Genetics, Forest Genetics and Forestry Breeding as well as Statistics such as PCA and Cluster. The variations within population and among populations are systematically studied from phenotype to molecular level and the relationship among the characters of various parents and their progenies, feature in allozyme and their relative ecological environment factors are analyzed. The results indicate as follows: 1 through the statistic analysis for more than 40,000 of data from over 4,500 samples in 36 characters of parent, it is first in parent bio-system characters, the morphology, growth, bio-mass and mineral elements of progeny seedlings that the genetic variation of Picea koraiensis is conducted. There are abundant variations in it and its genetic variation within a population is larger than among populations. 2 Allozyme technique is first systematically applied in the genetic diversity of Picea koraiensis. Among 21 gene loci in 11 enzymes testing in 1042 seeds of endosperm with single population and 300 seeds of endosperm with mixed populations from 170 trees of 12 populations, poly-morphic loci makes up about 27.2 percent of total. The variation within population is 15.2 percent and among populations is 84.2 percent. In contrast with other species in Picea spp., the ratio of major allozyme loci within population of...