Studies on Genetic Diversity and Relationship of Carrot Varieties and Germplasm Resources
MA Zhen-guo，OU Cheng-gang，LIU Li-jie，ZHAO Zhi-wei，ZHUANG Fei-yun*
（Institute of Vegetables and Flowers，Chinese Academy of Agricultural Sciences，Key Laboratory of Biology and Genetic Improvement of Horticultural Crops，Beijing 100081，China）
Genetic diversity and relationship between 29 Chinese carrot landraces，40 orange varieties and 1 Turkey purple cultivar were investigated using phenotypic and SSR markers. Phenotypic result showed that diversity index of orange varieties was lower than Chinese landraces except for leaf length，root length and root diameter. Principal component analysis showed that Chinese orange landraces had similar phenotypic variation with orange varieties in the autumn，but different in the spring. 133 polymorphic loci were amplified from 38 pairs of SSR primers. The average number of polymorphic loci of Chinese carrot landraces and orange varieties were 4.2 and 2.9，respectively. PIC value of Chinese carrot landraces（0.74±0.06）was obviously higher than that of orange varieties（0.42±0.03）. All accessions were divided into 2 groups: group I including orange varieties and orange B0241，and group Ⅱ containing other landraces and purple cultivar L1.
马振国，欧承刚，刘莉洁，赵志伟，庄飞云. 胡萝卜品种资源遗传多样性及亲缘关系研究[J]. 中国蔬菜, 2015, 1(11): 28-34.
MA Zhen-guo，OU Cheng-gang，LIU Li-jie，ZHAO Zhi-wei，ZHUANG Fei-yun. Studies on Genetic Diversity and Relationship of Carrot Varieties and Germplasm Resources. China Vegetables, 2015, 1(11): 28-34.
