摘要
为了探索霉梨(Pyrus spp.)品种群的起源,基于叶绿体片段(accD-psaI,trnL-F)及低拷贝核基因LEY2第二内含子(LFY2int2-N)DNA序列信息对相关的梨属植物进行了系统发育分析。结果表明:除了‘小霉梨’,其它样本均为同一种叶绿体单倍型,与大多数砂梨品种的单倍型一样;基于LFY2int2-N的系统发育树显示霉梨和浙江原产砂梨均非单系类群,但两者关系密切;霉梨并非种间杂种,豆梨很可能没有直接参与其起源。
To elucidate the origin of Meli pear group,phylogenetic relationships among related Pyrus species were studied based on two noncoding regions of cpDNA(accD-psaI,trnL-F)and one low copy nuclear gene intron(LFY2int2-N). As a result,all Meli cultivars but‘Xiaomeili',as well as most of the P. pyrifolia cultivars,belong to one cpDNA haplotype;The phylogenetic tree based on LFY2int2-N showed that both Meili and P. pyrifolia are not monophyletic,and Meili is most closely related to P. pyrifolia;Meili is not inter-specific hybrids,P. calleryana probably has not been involved in the origin of Meili. Origin of Meili should be further studied by investigating more samples and nuclear markers.
出处
《园艺学报》
CAS
CSCD
北大核心
2014年第10期2107-2114,共8页
Acta Horticulturae Sinica
基金
浙江省自然科学基金项目(LQ13C020001)
国家自然科学基金项目(30871690)
高等学校博士学科点专项科研基金项目(20110101110091)
关键词
霉梨
DNA序列
起源
系统发育
Meili(Pyrus spp.)
DNA sequence
origin
phylogenetics
