Subjects: Biology >> Botany >> Applied botany submitted time 2019-08-26 Cooperative journals: 《广西植物》
Abstract： To reveal variation rule of phenotypic traits of seed and seedling of Dalbergia odorifera from different places and their relation with geographic- climatic factors，taking seeds from ten locations of Hainan, Fujian, Guangxi and Guangdong and the seedlings cultivated in Guilin as experimental materials, Variance analysis, correlation analysis and principal component analysis were used to analyze nine phenotypic traits of seed and seedling growth. The results showed that there was considerable variability in the phenotypic traits of D.odorifera seeds and seedlings, and the differences among the nine phenotypic traits were highly significant. The average coefficient of variation (CV) of each trait was 12.50%, ranging from 7.94% to 18.89%. The variation of seedling growth traits was above that of seed traits, showing that the seed traits had higher stability.Relevant analysis showed that there were separate correlations between phenotypic traits, phenotypic traits and geographic-climatic factors. There was no notable correlation between phenotypic traits and longitude, latitude and annual precipitation. Altitude, annual average temperature and annual rainfall were the major factors affecting the traits of D.odorifera seeds and seedlings. Three families with better seed morphology, seedling growth and germination were screened out by principal component comprehensive score method on which the families were confirmed in growing areas of Xianyou, Danzhou and Jianfengling.
Subjects: Biology >> Botany >> Applied botany submitted time 2019-08-26 Cooperative journals: 《广西植物》
Abstract： The chemical constituents of essential oil of needles from Abies. ziyuanensis and A. yuanbaoshanensis were compared to provide a theoretical basis for the development and utilization of this two firs. Essential oil of needles were extracted by steam distillation, and were determined by GC-MS analysis. The relative content of each component was calculated based on the peak area normalization method. The results show that 21 and 22 kinds of chemical substances were identified in the essential oil of needles from A. ziyuanensis and A. yuanbaoshanensis, respectively. Among which 15 kinds chemical substances were the common components of this two firs; The Olefinic substances were the highest content in essential oil of needles from both A. ziyuanensis and A. yuanbaoshanensis, the proportion were 95.94 % and 95.02 %, respectively. Among the common components of two firs, β-Pinene, l-Caryophyllene, Camphene, a-Caryophyllene and Terpinolene have high development and utilization value; in terms of non-common components, a-Terpineol and a-Pinene in A. ziyuanensis both a-Muurolene and Leaf alcohol in A. yuanbaoshanensis had great development and utilization value.
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