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首页> 外文会议>International Conference on Insulating Materials, Material Application and Electrical Engineering >Chromosomal Karyotype Analysis of Four Varieties of Green Petioles Leaf Beet
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Chromosomal Karyotype Analysis of Four Varieties of Green Petioles Leaf Beet

机译：绿叶叶片四种品种的染色体核型分析

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Chromosome analysis of four varieties of green petioles leaf beet was performed by pressing plate's method. The results revealed the chromosome numbers of all four varieties of green petioles leaf beet was 2n=2x=l 8. And their centromere type was mainly composed by metacentric chromosomes (m) and sub metacentric chromosomes (sm), while the number of m was more than sm. However, evident variation among varieties was presented on their karyotype formula, karyotype type, satellitic position, and arm ratio, ratio of chromosome length (L/S) and index of karyotypic asymmetry. Although they all had one pair of satellites, the location of the satellites was different. The karyotype type contained 1A from 'Zhongnong', 'Huaxianzi' and 2A from 'Lifeng', 'Huaguan'. Statistically ratio of chromosome length for tested varieties ranged from 1.20 in 'Lifeng' to 1.52 in 'Zhongnong', and average arm ratio ranged from 1.42 in 'Zhongnong' to 1.62 in 'Huaguan'. The index of karyotypic asymmetry of 'Zhongnong', 'Huaxianzi', 'Lifeng', 'Huaguan' were 58.50%, 59.21%, 58.79% and 61.32%, respectively. This study revealed the karyotypic characteristics of leaf beet from the cytogenetic aspect, and provided a reference for variety breeding of leaf beet.
机译：通过压板的方法进行四种绿叶叶片甜菜染色体分析。结果显示，所有四种绿叶叶片甜菜的染色体数量为2N = 2x = L.，它们的焦点类型主要由核心染色体（m）和子中心四中心染色体（SM）组成，而m的数量是不仅仅是SM。然而，品种之间的明显变异在其核型公式，核型型，卫星位置和臂比，染色体长度（L / s）的比例和核型不对称指数上。虽然它们都有一对卫星，但卫星的位置是不同的。核型类型从“中纽”，“华建国”和“Huaguan”中的“华居”和2A中含有1A。经过测试品种的致染色体长度的统计学比例为“中币”中的1.20，在“中币”中的1.52，平均臂比在“钟源”中的1.42位为“华蒙”。 “中币”，“华兴益”，“李鹏”，“华源”的核型不对称指数分别为58.50％，59.21％，58.79％和61.32％。本研究揭示了从细胞遗传学方面的叶片甜菜的核型特征，为叶片甜菜种类育种提供了参考。

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