Studies on Karyotypes of Two Species in Kengyilia and Three Species in Roegneria

Sun Gen-lou, Yan Ji, Yang Jun-liang

Received:1900-01-01 Revised:1900-01-01 Online:1993-11-18 Published:1993-11-18
Contact: Sun Gen-lou

Abstract:

The karyotypes of 3 species of Roegneria and 2 species of Kengyilia were

analysed in this paper. They are all reported for the first time, and the karyotype

formulae are as follows: R. nutans, 2n = 4X= 28 = 26m+ 2sm; R. abolinii, 2n = 4X

=28 = 24m + 4sm; R. aristiglumis, 2n = 6X = 42 = 32m + 10sm (2sat); K. tahelacana

2n = 6X = 42 = 36m (2sat)+6sm (2sat); K. zhoasuensis, 2n = 6X= 42 = 34m(4sat)+ 8sm.

According to the characters of karyotypes, K. tahelacana and K. zhoasuensis have

the S, Y, P genomes of genus Kengyilia.

Key words: Roegneria, Kengyilia, Karyotype analysis

Sun Gen-lou, Yan Ji, Yang Jun-liang. Studies on Karyotypes of Two Species in Kengyilia and Three Species in Roegneria[J]. .

[1]	LU Bao-Rong. Revision of two Elymus species (Poaceae) [J]. , 2002, 40(6): 539-545.
[2]	CAI Lian-Bing. Geographical distribution of Kengyilia Yen et J. L. Yang (Poaceae) [J]. , 2001, 39(3): 248-259.
[3]	ZHOU Yong-Hong, ZHENG You-Liang, YANG Jun-Liang, YEN Chi, JIA Ji-Zeng. Relationships among Kengyilia species assessed by RAPD markers [J]. , 2000, 38(6): 515-521.
[4]	CAI Lian-Bing, ZHI Li. A taxonomical study on the genus Kengyilia Yen et J. L. Yang [J]. , 1999, 37(5): 451-467.
[5]	ZHANG Xin-Quan, YANG Jun-Liang, YEN Chi, ZHENG You-Liang, WU Bi-Hua. Biosystematic studies of Kengyilia melanthera and K. kokonorica (Poaceae: Triticeae) [J]. , 1999, 37(2): 117-124.
[6]	ZHOU Yong-Hong, WU Bi-Hua, FU Ti-Hua, ZHENG You-Liang. Morphology, fertility and cytogenetics of intergeneric hybrid between Roegneria kamoji Ohwi and Dasypyrum villosum (L.) Candargy (Poaceae: Triticeae) [J]. , 1999, 37(2): 125-130.
[7]	LI Xiu-Lan, SONG Wen-Qinv, AN Zhu-Ping, CHEN Rui-Yang. Karyotype Comparison Between Genera in Magnoliaceae [J]. , 1998, 36(3): 232-237.
[8]	LI Xiu-Lan, SONG Wen-Qin, AN Zhu-Ping, CHEN Rui-Yang. The Karyotype Analysis of Michelia (Magnoliaceae) in China [J]. , 1998, 36(2): 145-149.
[9]	Cai Lian-bing. A Taxonomical Study on the Genus Roegneria C. Koch from China [J]. , 1997, 35(2): 148-177.
[10]	Sun Gen-lou, Yang Jun-liang, Yen Chi. A Biosystematic Study on Hybrids Between Psathyrostachys huashanica and Two Species of Roegneria [J]. , 1993, 31(5): 393-398.

Knowledge