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基因组含量又称基因组大小或 DNA1C 值,是指物种配子染色体组所含 DNA 的量。基因组含量是比较和进化基因组学研究的基础。为掌握蔬菜基因组含量变化规律,利用植物 DNA 1C 值数据库和相关文献收集整理了主要蔬菜作物的基因组含量信息,通过统计比较分析得到以下主要结论:(1)流式细胞术(Flow Cytometry,FC)是测定蔬菜基因组含量的最佳方法;(2)睡莲科的莲藕(Nelumbo nucifera)是目前已知的基因组含量最小(0.24 pg)的蔬菜,石蒜科的自然四倍体藠头(Allium chinense)基因组含量最大(32.75 pg);(3)主要蔬菜种类中,石蒜科(19.08 pg)蔬菜平均基因组含量最高,十字花科(0.78pg)和葫芦科(0.78 pg)蔬菜最低;(4)多年生和单子叶蔬菜平均基因组含量分别极显著高于非多年生蔬菜和双子叶蔬菜。
Genomic content, also known as genomic size or DNA1C value, refers to the amount of DNA contained in the gamete genome. Genome content is the basis for comparative and evolutionary genomics research. In order to understand the variation of genomic content in vegetables, the genomic contents of main vegetable crops were collected and analyzed by using plant DNA 1C value database and related literatures. The following main conclusions were obtained through statistical analysis: (1) Flow Cytometry (FC) (2) Nelumbo nucifera is the most known genome with the lowest genomic content (0.24 pg) of vegetables, Amaryllis natural tetraploid head (Allium chinense) The genomic content was the highest (32.75 pg). (3) Among the main vegetable species, the average genomic content of Amaryllidaceae (19.08 pg) vegetables was the highest, while that of Cruciferae (0.78pg) and Cucurbitaceae (0.78 pg) And the average genomic content of monocotyledonous vegetables were significantly higher than non-perennial vegetables and dicotyledonous vegetables.