摘要
本文研究了棉蝗（ChondracrisrosearoseaDeGeer）的染色体组型和C带．结果表明：棉蝗的染色体数目：2n（♂）=22＋XO=23，全部为端着丝粒染色体，NF=23，枝型公式：2n（♂）=2X=23t，按染色体长度顺序排列分成四组，但按相对程度也可分为三组；所有染色体都具有明显的着丝粒带；异染色质总量为15．94±0.26％；染色体组中最长与最短染色体之比为5．89：1，臂比大于2：1的染色体比例为零，棉蝗的核型属“1C”核型．
The Karyotypes and C-bading Chondracris rosea rosea De Geer were investigated.Thc rcsultshowed the chromosomes number of Chondracris rosea rosea De Geer: 2n(♂) = 22+XO = 23, and they areall end-centromere chromosomes. The karyotypes fQrmu1a is 2n(♂) = 2X = 23t and NF = 23. The absolutelength amount of Metaphase Ⅱ chromosomcs is 66.98±2.00μm. All of chromosome has the obviouscentromere C-band. Thc amount of heterochromatin is 15. 94± 0.26%. The ratio is 5.89: 1 that betweenthe longest and shortest in Genome; the ratio is zero that the L / S was more than 2: 1 in Genome. TheChoridracris rosea rosea De Geer′s karyotypes belong to'IC'.
出处
《遗传》
CAS
CSCD
北大核心
1994年第5期10-13,共4页
Hereditas（Beijing)
基金
贵州省自然科学基金
关键词
棉蝗
染色体组型
C带
Chondracris rosea rosea, Karyotypes, C-banding
