摘要
对129份中国普通菜豆地方品种的形态性状进行分析,结果表明,8个性状共检测到35个变异类型,平均变异类型为4.375个,平均多态信息含量为0.5638。中国普通菜豆包括安第斯和中美两个基因库种质,中美洲基因库资源在参试资源中比重较大,但安第斯基因库资源遗传多样性水平高于中美基因库材料。由中美基因库向安第斯基因库渗透的天然杂交种质可为普通菜豆高产、优质、抗逆育种提供有价值的桥梁品种。
A collection of 129 common bean landraces was evaluated for 8 agronomic traits to display the degree of variations of these germplasm resources. A total of 35 variations were detected with an average of 4. 375 variations per phenotypic trait. Two clusters consisted of accessions of Andean and Mesoamerican origin, existed in Chinese common bean accessions. The average PIC was 0. 5638. The dominant accessions were Mesoamerican genepool type. The genetic diversity level was higher in the Andean group compared to the Mesoamerican group. The accessions with introgression from Mesoamerican to the Andean group could be useful as bridge varieties for common bean breeding.
出处
《植物遗传资源学报》
CAS
CSCD
2007年第4期406-410,共5页
Journal of Plant Genetic Resources
基金
国家科技支撑计划(2006BAD13B05)
