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| 高寒地区裸燕麦的核型研究 | |
| 引用本文： | 耿帆,周青平,梁国玲,贾志锋,刘文辉,丁成翔,刘勇,颜红波. 高寒地区裸燕麦的核型研究[J]. 青海大学学报, 2014, 32(6): 11-14 |
| 作者姓名： | 耿帆 周青平 梁国玲 贾志锋 刘文辉 丁成翔 刘勇 颜红波 |
| 作者单位： | 1. 青海大学,青海西宁810016;青海大学畜牧兽医科学院,青海西宁810016 2. 西南民族大学,四川成都,610041 3. 青海大学畜牧兽医科学院,青海西宁,810016 |
| 基金项目： | 国家科技部农转资金项目，青海省青藏高原优良牧草种质资源利用重点实验室，国家科技部科技支撑项目 |
| 摘 要： | 为燕麦种质的鉴定以及高寒地区裸燕麦的推广、遗传育种提供细胞学理论依据,利用根尖压片法对青引3号莜麦(Avena nuda L.cv.Qingyin No.3)的染色体核型进行了分析。结果表明:青引3号莜麦根尖细胞的染色体数目为2n=42,其中包括11对中部着丝点区染色体和10对近中部着丝点区染色体,其核型公式为2n=6x=42=22 m+20 sm(4SAT),其中第14、第16号染色体短臂末端带有随体。青引3号莜麦染色体的核型属于2B型,这是一种较高级的类型。 |
| 关 键 词： | 核型分析 裸燕麦 高寒地区 |
Karyotype analysis of naked oats |
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| Affiliation: | GENG Fan,ZHOU Qingping,LIANG Guoling,JIA Zhifeng,LIU Wenhui,DING Chengxiang,LIU Yong,YAN Hongbo ( 1. Qinghai University, Xining 810016, China ;2. Academy of Animal Science and Veterinary Medicine, Qinghai University, Xining 810016, China; 3. Southwest University for Nationalities, Chengdu 610041, China) |
| Abstract: | The study was to provide the cytological theory basis for oats＇ identification,extension and genetic breeding in the alpine- cold region. The chromosome karyotype of root tip cells of Avena nuda L. cv. Qingyin No. 3 was analyzed with squash method. The results of chromosome counting showed that the chromosome number of root tip cells of Avena nuda L. cv. Qingyin No. 3 was 2n = 42,among them there were 11 pairs of metacentric chromosome and 10 paris of submetacentric chromosome. Their karyotype formula is 2n = 6x = 42 = 22 m ＋ 20sm（ 4SAT）,and in the 14 thchromosome and the 16thchromosome＇s short arm ends with satellite. The karyotype of Avena nuda L. cv. Qingyin No. 3 belongs to 2B type,and it＇s an advanced type. |
| Keywords: | karyotype analysis naked oats alpine-cold region |
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