Karyomorphology of Onagraceae and its Systematic Implications

柳叶菜科的核形态及其系统意义

• 批准号: 08640899
• 负责人: OGINUMA Kazuo
• 金额: $ 1.28万
• 依托单位: College of Child Development, Kochi Women's University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08640899/
• 关键词: interphase nucleus; DNA content; Onagraceae; 分類形質

Types of interphase nucleus of Onagraceae are categorized to four groups : Simple chromocenter type, prochromosome type, complex chromocenter type and diffuse type (Tanaka et al., 1988). in this study, we observed morphology of interphase nucleus and measured 2C DNA contents of 25 species of nine genera in Onagraceae for examination of their mutual relationships and systematic implications. Except the diffuse type, 2C DNA contents of the rest of three types show continuous variation between 3.58pg-0.52pg. Thus, the three karyomorphological types of interphase can not be divided each other by 2C DNA contents.However, 2C DNA contents of the diffuse type are more than. 7.00pg, thus, the diffuse type can be clearly distingushed from other three types.Compared 2C DNA contents with phylogenetic tree based on analyzes of morphological and molecular data reported, it might be clear that intergeneric differentiation is carried out by increasing of 2C DNA contents, however, infrageneric differentiation is carried out by decreasing of 2C DNA contents.

柳叶菜科的间期核类型分为四类：简单染色中心型、前染色体型、复杂染色中心型和弥散型（Tanaka et al.，1988年）。摘要对柳叶菜科9属25种植物的间期核形态进行了观察，并测定了其2C DNA含量，以探讨它们之间的相互关系和系统学意义。除弥漫型外，其余三种类型的2C DNA含量均在3.58pg-0.52pg之间呈连续变化。因此，不能用2CDNA含量来区分间期核的三种形态类型，而弥散型的2CDNA含量高于间期核。根据形态学和分子生物学资料，将2CDNA含量与系统发育树进行比较，可以看出，属间的分化是通过2CDNA含量的增加来实现的，而属下的分化则是通过2CDNA含量的减少来实现的。

项目成果

Kazuo Oginuma: "Karyomorphology of Some Trapaceae in Japan." Acta Phytotax.Geobot.47. 47-52 (1996)

Kazuo Oginuma：“日本一些菱科植物的核形态学”。

Kazuo Oginuma: "Karyomorphology in Two Species of Nesaea (Lythraceae ; Lythroideae)." Acta Phytotax.Geobot. 47. 169-172 (1996)

Kazuo Oginuma：“两种 Nesaea 物种（千屈菜科；Lythroideae）的核形态学”。

Kazuo Oginuma: "Karyomorphology in Two Species of Nesaea(Lythraceae;Lythroideae)" Acta Phytotax.Geobot.47(2). 169-172 (1996)

Kazuo Oginuma：“两种 Nesaea（千屈菜科；Lythroideae）的核形态学”Acta Phytotax.Geobot.47(2)。

Kazuo Oginuma: "Karyomorphology of Some Trapaceae in Japan" Acta Phytotax.Geobot.47(1). 47-52 (1996)

Kazuo Oginuma：“日本一些菱科植物的核形态学”Acta Phytotax.Geobot.47(1)。

Kazuo Oginuma & Hiroshi Tobe: "Karyomorphology in two species of (Lythraceae ; Lythroideae)" Acta Phytotax.Geobot.47(2). 169-172 (1996)

荻沼一夫