TY - JOUR
T1 - Karyological studies on some species of radula (radulaceae, jungermanniopsida, marchantiophyta)
AU - Zheng, Min
AU - Zhu, Rui Liang
PY - 2009/2
Y1 - 2009/2
N2 - Karyological observations were made on 16 species of the genus Radula (Jungermanniopsida: Radulaceae) from China and Singapore. The chromosome number n = 8 was found in all Radula species investigated. The chromosome numbers of ten species belonging to six sections of two subgenera, i.e., Radula acuminata Steph. (Sect. Epiphyllae Castle ex Grolle), R. acuta Mitt. (Sect. Acutifoliae Castle ex Grolle), R. amoena Herzog (Sect. Acutifoliae), and R. anceps Sande Lac. (Sect. Acutifoliae), R. cavifolia Hampe ex Gottsche et al. (Sect. Cavifolium K.Yamada), R. formosa (Meissn.) Nees (Sect. Amentulosae Castle ex Grolle), R. gedena Gottsche ex Steph. (Sect. Epiphyllae), R. inouei K.Yamada (Sect. Radula), Radula onraedtii K.Yamada (Sect. Radula), and R. philippinensis K.Yamada (Sect. Dichotomae Castle & Grolle), are reported for the first time. The results for Radula javanica Gottsche (Sect. Radula), R. kojana Steph. (Sect. Acutifoliae), R. okamurana Steph. (Sect. Radula), and R. oyamensis Steph. (Sect. Radula) confirmed previous records. The chromosome counts in Radula constricta Steph. (Sect. Radula) (n = 8) and R. retroflexa Tayler (Sect. Retroflexa K.Yamada) (n = 7, 8) differ from earlier reports. In addition, karyotypes of five species, Radula cavifolia, R. constricta, R. javanica, R. inouei and R. retroflexa, were presented. The length and width of the largest chromosomes and smallest ones are provided. The karyotypes of Radula constricta are sometimes variable in different populations. Our results reveal that the chromosome numbers and karyotypes seem to have little taxonomic value in the infrageneric divisions of Radula.
AB - Karyological observations were made on 16 species of the genus Radula (Jungermanniopsida: Radulaceae) from China and Singapore. The chromosome number n = 8 was found in all Radula species investigated. The chromosome numbers of ten species belonging to six sections of two subgenera, i.e., Radula acuminata Steph. (Sect. Epiphyllae Castle ex Grolle), R. acuta Mitt. (Sect. Acutifoliae Castle ex Grolle), R. amoena Herzog (Sect. Acutifoliae), and R. anceps Sande Lac. (Sect. Acutifoliae), R. cavifolia Hampe ex Gottsche et al. (Sect. Cavifolium K.Yamada), R. formosa (Meissn.) Nees (Sect. Amentulosae Castle ex Grolle), R. gedena Gottsche ex Steph. (Sect. Epiphyllae), R. inouei K.Yamada (Sect. Radula), Radula onraedtii K.Yamada (Sect. Radula), and R. philippinensis K.Yamada (Sect. Dichotomae Castle & Grolle), are reported for the first time. The results for Radula javanica Gottsche (Sect. Radula), R. kojana Steph. (Sect. Acutifoliae), R. okamurana Steph. (Sect. Radula), and R. oyamensis Steph. (Sect. Radula) confirmed previous records. The chromosome counts in Radula constricta Steph. (Sect. Radula) (n = 8) and R. retroflexa Tayler (Sect. Retroflexa K.Yamada) (n = 7, 8) differ from earlier reports. In addition, karyotypes of five species, Radula cavifolia, R. constricta, R. javanica, R. inouei and R. retroflexa, were presented. The length and width of the largest chromosomes and smallest ones are provided. The karyotypes of Radula constricta are sometimes variable in different populations. Our results reveal that the chromosome numbers and karyotypes seem to have little taxonomic value in the infrageneric divisions of Radula.
KW - China
KW - Chromosome numbers
KW - Hepaticae
KW - Karyotype
KW - Liverworts
KW - Radula
KW - Singapore
UR - https://www.scopus.com/pages/publications/63849154169
U2 - 10.1127/0029-5035/2009/0088-0229
DO - 10.1127/0029-5035/2009/0088-0229
M3 - 文章
AN - SCOPUS:63849154169
SN - 0029-5035
VL - 88
SP - 229
EP - 244
JO - Nova Hedwigia
JF - Nova Hedwigia
IS - 1-2
ER -