TY - JOUR
T1 - Chromosome numbers of Taraxacum officinale (Asteraceae) distributed in some high mountains in Central Honshu, Japan
AU - Sato, Kyoko
AU - Iwatsubo, Yoshikane
AU - Ohta, Michihito
AU - Matsuhisa, Taku
AU - Naruhashi, Naohiro
PY - 2008/4
Y1 - 2008/4
N2 - Polyploidy in 1,289 individuals of Taraxacum officinale, which have invaded the flora of Mt. Tateyama, Mt. Norikuradake and Shiga Heights, were studied. They had either 2n = 3x = 24 or 2n = 4x = 32 chromosomes. These counts are consistent with the results of previous studies in the plains of Toyama Prefecture, central Japan (Sato et al. 2007). Triploid individuals were found in all the sites investigated in the three mountains, while tetraploid ones were restricted only to the sites at low altitudes. Moreover, tetraploid individuals were not found above a height of 2,100 m, which raises the possibility that tetraploid T. officinale has lower resistance at alpine habitats than triploid T. officinale.
AB - Polyploidy in 1,289 individuals of Taraxacum officinale, which have invaded the flora of Mt. Tateyama, Mt. Norikuradake and Shiga Heights, were studied. They had either 2n = 3x = 24 or 2n = 4x = 32 chromosomes. These counts are consistent with the results of previous studies in the plains of Toyama Prefecture, central Japan (Sato et al. 2007). Triploid individuals were found in all the sites investigated in the three mountains, while tetraploid ones were restricted only to the sites at low altitudes. Moreover, tetraploid individuals were not found above a height of 2,100 m, which raises the possibility that tetraploid T. officinale has lower resistance at alpine habitats than triploid T. officinale.
UR - http://www.scopus.com/inward/record.url?scp=57849135625&partnerID=8YFLogxK
U2 - 10.51033/jjapbot.83_2_10038
DO - 10.51033/jjapbot.83_2_10038
M3 - 学術論文
AN - SCOPUS:57849135625
SN - 0022-2062
VL - 83
SP - 115
EP - 120
JO - Journal of Japanese Botany
JF - Journal of Japanese Botany
IS - 2
ER -