Testes and chromosomes in interspecific hybrids between helicoverpa armigera (hubner) and helicoverpa assulta (guenee)
文献类型：期刊论文
| 作者 | Tang, QB; Yan, YH; Zhao, XC; Wang, CZ |
| 刊名 | Chinese science bulletin
 |
| 出版日期 | 2005-06-01 |
| 卷号 | 50期号:12页码:1212-1217 |
| 关键词 | Helicoverpa Interspecific hybridization Sterility Testes Chromosomes |
| ISSN号 | 1001-6538 |
| DOI | 10.1360/982004-594 |
| 通讯作者 | Wang, cz(czwang@ioz.ac.cn) |
| 英文摘要 | The interspecific hybridization between helicoverpa armigera females and helicoverpa assulta males yielded f, hybrids (rs), fertile males and sterile individuals with abnormal genitals. the reverse hybridization between h. assulta females and h. armigera males yielded f, hybrids (sr) --fertile males and fertile females. the morphology of testes and the karyotype of chromosomes of larvae in the hybrids were investigated. among the 2d old fifth-instar sr larvae, individuals without testes were fertile females and those with testes were fertile males. the length and breadth of testes between sr and parental species were not significantly different (p > 0.05). among the 2d old fifth-instar rs larvae, the testes were observed in all the individuals, but it could be classified into two types. the length and the breadth of testes in type 1 larvae were not significantly different from those of their parental species (p > 0.05), while those in type 2 were significantly less than those of their parental species (p < 0.01). mitotic metaphase i of brain cells showed the diploid chromosomes number of both reciprocal hybrids was 2n=62, as many as their parents. the haploid number of 31 was confirmed by counts from spermatocytes at meiotic metaphase from sr male larvae and type 1 larvae of rs. meiosis was not observed in spermatocytes of type 2 larvae of rs. considering the characteristics of adult hybrids of rs, it was concluded that type 1 individuals in rs were fertile and those of type 2 were sterile. the sterility of type 2 individuals in rs is attributed to the abnormity in development of testes and the failing meiosis of spermatocytes. as a result, the normal spermatozoon could not been produced. |
| WOS关键词 | SUBFLEXA BACKCROSS HYBRIDS ; HELIOTHIS-VIRESCENS ; REPRODUCTIVE ISOLATION ; LEPIDOPTERA-NOCTUIDAE ; DOSAGE COMPENSATION ; UNISEXUAL STERILITY ; HALDANES RULE ; Y-CHROMOSOME ; SEX-RATIO ; CROSSES |
| WOS研究方向 | Science & Technology - Other Topics |
| WOS类目 | Multidisciplinary Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000230762700008 |
| 出版者 | SCIENCE PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2377753 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Wang, CZ |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Integrated Management Insects & Rod, Inst Zool, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tang, QB,Yan, YH,Zhao, XC,et al. Testes and chromosomes in interspecific hybrids between helicoverpa armigera (hubner) and helicoverpa assulta (guenee)[J]. Chinese science bulletin,2005,50(12):1212-1217. |
| APA | Tang, QB,Yan, YH,Zhao, XC,&Wang, CZ.(2005).Testes and chromosomes in interspecific hybrids between helicoverpa armigera (hubner) and helicoverpa assulta (guenee).Chinese science bulletin,50(12),1212-1217. |
| MLA | Tang, QB,et al."Testes and chromosomes in interspecific hybrids between helicoverpa armigera (hubner) and helicoverpa assulta (guenee)".Chinese science bulletin 50.12(2005):1212-1217. |
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来源：中国科学院大学
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