| 斑腿蝗科两种短翅蝗虫的染色体研究 |
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| 引用本文： | 柳青,欧晓红.斑腿蝗科两种短翅蝗虫的染色体研究[J].西南林学院学报,2005,25(2):5-7. |
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| 作者姓名： | 柳青 欧晓红 |
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| 作者单位： | 西南林学院,保护生物学学院,云南,昆明,650224 |
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| 基金项目： | 云南省教育厅教学、科研带头人培养经费资助，云南省自然科学基金项目(97C052M)资助. |
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| 摘 要： | 斑腿蝗科两种短翅蝗虫,昆明拟凹背蝗和绿胫舟形蝗的染色体数目相同,均为2n(♂)=23,全部是端部着丝点染色体,性别决定机制XO型,性染色体X属于大型染色体,相对长度位居第一.研究结果表明:昆明拟凹背蝗的染色体C带共28条,除着丝粒带之外,其余5条为端带,分别出现于L2,M5,M7,M8和S11.两种短翅蝗虫的减数分裂染色体交叉频率以1位点和2位点的交叉居多.
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| 关 键 词： | 染色体 C带 交叉频率 昆明拟凹背蝗 绿胫舟形蝗 斑腿蝗科 |
| 文章编号： | 1003-7179（2005）02-0005-03 |
| 收稿时间： | 2004-12-30 |
| 修稿时间： | 2004年12月30 |
Chromosome of Two Species of Short-winged Grasshoppers in Family of Catantopidae |
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| LIU Qing,OU Xiao-Hong.Chromosome of Two Species of Short-winged Grasshoppers in Family of Catantopidae[J].Journal of Southwest Forestry College,2005,25(2):5-7. |
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| Authors: | LIU Qing OU Xiao-Hong |
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| Abstract: | The chromosome karyotypes of two different grasshopper species, i.e., Pseudoptygonotus kunmingensis and Lemba vibridutibia, belonging to Catantopidae, were reported. It was showed that the karyotypes of these two species were both telocentric chromosomes with 2n()=23. The sexes of these two grasshopper species were all determined by XO type, and the sex-chromosome belonged to large chromosome, which took the first place in all chromosomes according to its relative length. It was showed by the study that the Pseudoptygonotus kunmingensis had 28 C-bands, including 5 terminal C-bands lying on loci L_2, M_5, M_7, M_8 and S_(11). The cross frequencies of chromesomes of these two short-winged grasshopper species mainly appeared on locus 1 and locus 2 during the meiosome process. |
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| Keywords: | chromosome C-band cross frequency Pseudoptygonotus kunmingensis Lemba vibridutibia Catantopidae |
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