当前位置: 首页 > 文章 > 二倍体及同源四倍体小果型西瓜核型分析 北方园艺 2013 (23) 40-43
Position: Home > Articles > Karyotype Analysis of Diploid and Autotetraploid Mini-watermelon Northern Horticulture 2013 (23) 40-43

二倍体及同源四倍体小果型西瓜核型分析

作  者:
袁建民;党选民;詹园凤;李易蓉;但忠;杨长楷
单  位:
中国热带农业科学院热带作物品种资源研究所;云南省农业科学院热区生态农业研究所
关键词:
小果型西瓜;二倍体;四倍体;染色体;核型分析
摘  要:
以二倍体小果型西瓜及其同源四倍体为试材,采用根尖染色体制片及染色体分析技术,对二倍体及同源四倍体西瓜进行了核型分析。结果表明:二倍体小果型西瓜核型公式为2n=2x=22=22m,11对染色体均为中部着丝粒染色体,核不对称系数为58.90%,核型类型属于1A型,为基本对称型;四倍体小果型西瓜核型公式为2n=4x=44=44m,核不对称系数为56.45%,核型特征与二倍体基本一致。表明四倍体小果型西瓜是由其二倍体加倍得到的,为同源四倍体。
译  名:
Karyotype Analysis of Diploid and Autotetraploid Mini-watermelon
作  者:
YUAN Jian-min;DANG Xuan-min;ZHAN Yuan-feng;LI Yi-rong;DAN Zhong;YANG Chang-kai;SU Yin-ling;MU Wan-fu;Research Institute of Tropical Eco-agricultural Sciences,Yunnan Academy of Agricultural Sciences;Tropical Crops Genetic Resources Institute,Chinese Academy of Tropical Agricultural Sciences;
关键词:
mini-watermelon;;diploid;;tetraploid;;chromosome;;karyotype analysis
摘  要:
Taking the diploid and autotetraploid mini-watermelon as meterial,the diploid and autotetraploid miniwatermelons' karyotype were analyzed using traditional tabletting method.The results showed that the diploid miniwatermelon karyotype formula was 2n=2x=22=22mwith the index of the As.k(karyotypic asymmetry)of 58.90%,with 11pairs metacentric chromosomes.The karyotype belonged to 1A,with ultimately symmetry karyotype.In addition,the tetraploid mini-watermelon karyotype formula was 2n=4x=44=44m,As.k was 56.45%,same as diploid.The results proved that tetraploid mini-watermelon resulted in the chromosome doubling of diploid.

相似文章

计量
文章访问数: 15
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊