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杉木遗传多态性与多基因位点遗传结构(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
1993年03期
Page:
9-15
Column:
研究论文
publishdate:
1900-01-01

Article Info:/Info

Title:
GENETIC DIVERSITY AND MULTILOCUS STRUCTURE IN CHINESE FIR (CUNNINGHAMIA LANCEOLATA)
Article ID:
1000-2006(1993)03-0009-07
Author(s):
Shi Jisen Ye Zhihong (Nanjing Forestry University Nanjing)Francis C. Yeh Rongcai Yang (Department of Forest Science University of Alberta Edmonton Canada TG6 2H1)Hong Jusheng
The Chinese Academy of Forestry, Beijing 100091, PRC
Keywords:
Chinese Fir Isozymes Genetic Diversity Multilocus Gametic Disequilibria
Classification number :
-
DOI:
10.3969/j.jssn.1000-2006.1993.03.002
Document Code:
A
Abstract:
Open-pollinated seeds were assayed for allozyme polymorphisms at 24 loci to estimate genetic diversity and assess multilocus associations in 16 populations of Cunninghamia lanceolate (Lamb.) Hook in People’s Republic of China. On average, percentage of polymorphic loci was 88. 00, number of al-leles per locus was 3. 00, and expected heterozygosity was 0. 394. Distribution of genetic diversity was random but allele frequency at seven loci correlated with geographic and climatic variables. Six percent of total gene diversity was attributed to among-population differentiation; 94% resided withinpopulations. Two-locus gametic disequilibria were found in 15 of 16 populations and highter order ga-metic disequilibria were significant in most populations. Correlations between gametic disequilibria andgeographic and climatic variables were random. Results suggested founde effect, population subdivision , occurrence across diverse environments and historical events from 2000 years of cultivation were factors in the generation and maintenance of genetic diversity and structure in this conifer.

References

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Last Update: 1900-01-01