| 杜洛克猪与甘肃黑猪杂交后代染色体遗传变异的特征 |
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| 引用本文： | 魏彩虹,刘丑生,赵兴波.杜洛克猪与甘肃黑猪杂交后代染色体遗传变异的特征[J].遗传,2003,25(1):27-29. |
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| 作者姓名： | 魏彩虹 刘丑生 赵兴波 |
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| 作者单位： | 1.北京养猪育种中心，北京 100085；2.中国农业大学动物科技学院，北京 100094 |
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| 基金项目： | 甘肃省九五攻关项目"甘肃黑猪合成系培育及其利用的研究"，国家重点研究发展规划项目(G20000161)资助 |
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| 摘 要： | 将杜洛克猪血液导入甘肃黑猪后能使其发生染色体遗传变异。甘肃黑猪Ⅱ系的1、6、7、13号染色体的条比值较Ⅰ系略高，而且个体间变异较大，这表明导入外血的Ⅱ系纯合度比Ⅰ系差一些；导入外血使甘肃黑猪染色体次缢痕发生变异，甘肃黑猪Ⅰ、Ⅱ系平均每个细胞Ag-NOR数在1~4之间，两品系均数差异显著，这表明两个品系在rRNA基因转录活性上有差别。
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| 关 键 词： | 染色体 遗传变异 猪 |
| 文章编号： | 0253-9772(2003)01-0027-03 |
| 修稿时间： | 2001年10月12 |
Influence of Infusion of Duroc Blood on Characteristics of Chromosomes in Gansu Black Pig |
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| Cai-Hong Wei,Chou-Sheng Liu,Xing-Bo Zhao.Influence of Infusion of Duroc Blood on Characteristics of Chromosomes in Gansu Black Pig[J].Hereditas,2003,25(1):27-29. |
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| Authors: | Cai-Hong Wei Chou-Sheng Liu Xing-Bo Zhao |
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| Institution: | 1.Beijing Breeding Swine Centre,Beijing 100085,China;2.College of Animal Science and Technology,China Agricultural University,Beijing 100094,China |
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| Abstract: | The variation of chromosomes of Gansu Black pig was caused by infusion of Duroc blood. The chromosome length ratios of No.1,6,7,13 chromosomes in the line I of Gansu Black pig were higher than those in the line II. It showed that the homogeneity in line I was higher than in line II. The number of Ag-staining nucleolus organizers (Ag-NOR) was between 1-4 in the line I and II, the average No. of Ag-NOR was different obviously between the line I and the line II. This indicated that the activity of translation in rRNA in the line I was different in the line II. |
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| Keywords: | chromosome variation pig |
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