|Title:||利用農藝性狀評估糯稻種原之遺傳歧異性||Other Titles:||Genetic Diversity Evaluation for Glutinous Rice Germplasm Based on Agronomic Traits||Authors:||陳源俊
|Keywords:||遺傳歧異性;糯稻;種原;Genetic diversity;Glutinous rice;Germplasm||Issue Date:||Mar-2005||Publisher:||台灣農藝學會||Journal Volume:||2||Journal Issue:||1||Start page/Pages:||11-30||Source:||作物、環境與生物資訊||Abstract:||
There have been very few researches on glutinous rices in all over the world. In contrast to indica or japonica type, the breeding history and activities of glutinous rices are far behind in Taiwan. Studies specifically focus on the evaluation and utilization of germplasm for glutinous rices are necessary. To evaluate the genetic diversity of glutinous rice germplasm, 135 glutinous rices (including 64 indica, 53 japonica and 28 upland types) collected from 10 countries and 5 non-glutinous varieties were used in this study. Twenty-seven qualitative and 7 quantitative traits were investigated at Taichung, Taiwan during the first and second cropping seasons of 2000. There were significant differences between two cropping seasons in the investigated quantitative traits. However, in corresponding comparison with the significant test results of correlation between traits in different years, some inconsistent results were found. No distinct group was identified from clustering analysis based on agronomic traits, and 3 types of glutinous germplasm were unable to be differentiated. The germplasm originated from different countries were separately gathered in a few small groups. The quantitative traits had better categorization effectiveness than qualitative traits in principal component analysis (PCA). Different subspecies of glutinous germplasm were separated by using culm length and leaf length as decisive factors, which accounted for 87.5% and 90.7% variation in the first and second cropping seasons, respectively. Compared to japonica type germplasm, the indica type had wider genetic diversity. And the upland glutinous germplasms were distributed diversely in japonica or indica group.
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