Polyploidy of Reynoutria japonica var. japonica （Polygonaceae）in Japan

フォーマット:

論文

責任表示:

Iwatsubo, Yoshikane ; Kodate, Goro ; Naruhashi, Naohiro

言語:

英語

出版情報:

植物地理・分類学会 = The Society for the Study of Phytogeography and Taxonomy, 2004-12-30

著者名:

• Iwatsubo, Yoshikane
• Kodate, Goro
• Naruhashi, Naohiro

掲載情報:

植物地理・分類研究 = The journal of phytogeography and toxonomy

ISSN:

0388-6212      

巻:

52

通号:

2

開始ページ:

137

終了ページ:

142

バージョン:

publisher

概要:

The chromosome number of Reynoutria japonica var. japonica was determined based on a total of 305 indi-viduals from 37 localities in central and northern Honshu of Japan. Plants investigated showed three chromo-some counts of 2n=44, 66 and … 88. Among these, the plants with 2n=66 chromosomes are the first finding in Ja-pan. In the 37 localities studied, 15 localities had two chromosome races of any one of the following three combi-nations : 2n=44 and 66 ; 2n=44 and 88 ; or 2n=66 and 88, and five localities harbored all the three chromosome races. Reynoutria is believed to have a base number of x=11（Darlington and Wylie 1955）. These chromosome counts were consistent with the proposed base number, showing euploid variation of tetraploid（2n=44）,hexa-ploid（2n=66）and octoploid（2n=88）. Chromosome sizes of the respective chromosome races were 1.0―1.8 μmin tetraploid（2n=44）plant, 1.1―1.8 μm in hexaploid（2n=66）plant, and 0.9―1.8 μm in octoploid（2n=88）plant. Their chromosome complements had similar ranges in chromosome length. 続きを見る

URL:

http://hdl.handle.net/2297/48790