TY - JOUR
T1 - A new Chinese species of Psathyrostachys (Poaceae) with notes on its karyotypes
AU - Baden, C.
AU - Linde-Laursen, I.
AU - Dewey, D.R.
PY - 1990
Y1 - 1990
N2 - The new species Psathyrostachys stoloniformis native to China is described. The karyotype was investigated by C‐, N‐, and Ag‐banding. The new species has 2n = 2x = 14, including 8 metacentric and 6 SAT‐chromosomes with minute satellites, distributed either on 3 or on 4 chromosome pairs. The C‐banding pattern comprises from one to six conspicuous and from zero to three very small bands per chromosome. Often two bands placed close together appear as one large band. The karyotype suggests that P. stoloniformis is closely related to P. juncea. N‐banding produced very weak or no bands. Meiotic analyses of interspecific hybrids revealed a high chiasma frequency indicating that P. stoloniformis has the same basic genome (N) as P. huashanica, and P. fragilis.
AB - The new species Psathyrostachys stoloniformis native to China is described. The karyotype was investigated by C‐, N‐, and Ag‐banding. The new species has 2n = 2x = 14, including 8 metacentric and 6 SAT‐chromosomes with minute satellites, distributed either on 3 or on 4 chromosome pairs. The C‐banding pattern comprises from one to six conspicuous and from zero to three very small bands per chromosome. Often two bands placed close together appear as one large band. The karyotype suggests that P. stoloniformis is closely related to P. juncea. N‐banding produced very weak or no bands. Meiotic analyses of interspecific hybrids revealed a high chiasma frequency indicating that P. stoloniformis has the same basic genome (N) as P. huashanica, and P. fragilis.
U2 - 10.1111/j.1756-1051.1990.tb00535.x
DO - 10.1111/j.1756-1051.1990.tb00535.x
M3 - Journal article
SN - 0107-055X
VL - 9
SP - 449
EP - 460
JO - Nordic Journal of Botany
JF - Nordic Journal of Botany
IS - 5
ER -