松墨天牛和光肩星天牛染色体核型
Karyotypes of Monochamus alternatus and Anoplophora glabripennis.
刘平1**,嵇保中1***,刘曙雯2,张凯1,于秀坤1,林晓1
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DOI：
作者单位：1．南京林业大学南京210037； 2．南京市中山陵园管理局南京210014
中文关键词：松墨天牛，光肩星天牛，染色体，核型
英文关键词：
中文摘要：
以松墨天牛Monochamus alternatus Hope和光肩星天牛Anoplophora glabripennis Motschulsky为研究对象，以各种天牛的最适条件和最佳材料进行染色体的制备和观察。试验结果如下：松墨天牛的最佳试验材料为7日龄蛹的精巢或卵巢，染色体数目2n=20，性别决定机制为Xyp，有大型染色体5对，中型染色体4对，性染色体在其大小排列中位于最末位，为中型染色体，染色体组式为5L+4M+Xyp；光肩星天牛的最佳试验材料为初羽化成虫的精巢或卵巢，染色体数目2n=20，性别决定机制为Xyp，有大型染色体6对，中型染色体3对，性染色体在其大小排列中位于最末位，但也为中型染色体，染色体组式：6L+3M+Xyp。
英文摘要：The karyotypes of Monochamus alternatus Hope and Anoplophora glabripennis Motschulsky were studied. According to the optimum conditions and the best material for each species of long-horn beetle，we made and examined the slide specimens of chromosomes. The best material for M. alternatus was testis or ovary of 7 d pupae. The chromosomal number was 2n = 20. The sex-determining mechanism was Xyp . The chromosome was composed of 5 pairs of large autosomes，4 pairs of middle autosomes and 1 pair of sexchromosomes. The sex-chromosomes were middle-sized and situated in the last among all chromosomes. The genome-style was 5 L + 4 M + Xyp . The best material for A. glabripennis was testis or ovary in the newly emerged adults，and its chromosomal number was 2n = 20. The sex-determining mechanism was Xyp . The chromosome was composed of 6 pairs of large autosomes，3 pairs of middle autosomes and 1 pair of sexchromosomes. The sex-chromosomes were middle-sized and situated in the last among all chromosomes. The genome-style was 6L + 3 M + Xyp .