摘要
本文以雄性精巢作为实验材料，经过低渗、固定、空气干燥、Giemsa染色制备染色体标本，对大棘螽Deracanthagrandis（Lucas）的染色体核型进行了研究，结果2n■=29，第一对染色体为中部着丝粒染色体，其余的均为近端着丝粒染色体．性别决定机制为XO■／XX■型．
Karyotype of Deracantha grandis (Lucas) was investigated. The diploidnumber of chromosomes is 2n■= 29(XO). The autosomes can be divided into three sizegroups: one long (L1), six medium (M2-M7), and seven short (S8-S14 ), the firstpair L1 is metacentric, while the others are acrocentric. The size of acrocentric X chro-mosome is intermeiate between that of the L and M autosomes.
出处
《山西师范大学学报（自然科学版）》
1999年第4期66-68,共3页
Journal of Shanxi Normal University(Natural Science Edition)
关键词
大棘螽
染色体
核型
Deracantha grandis Chromosome Karyotype
