MEIOTIC ANALYSIS OF ELYMUS-CAUCASICUS, E-LONGEARISTATUS, AND THEIR INTERSPECIFIC HYBRIDS WITH 23 ELYMUS SPECIES (TRITICEAE, POACEAE)

被引：25

作者：

LU, BR

VONBOTHMER, R

机构：

[1] Department of Plant Breeding Research, The Swedish University of Agricultural Sciences, Svalöv, S-268 31

来源：

PLANT SYSTEMATICS AND EVOLUTION | 1993年 / 185卷 / 1-2期

关键词：

POACEAE; TRITICEAE; ELYMUS; BIOSYSTEMATICS; INTERSPECIFIC HYBRID; MEIOSIS; CHROMOSOME PAIRING; GENOME DIFFERENTIATION;

D O I：

10.1007/BF00937719

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Interspecific hybridizations were carried out between the two tetraploids Elymus caucasicus and E. longearistatus, and 23 tetraploids and hexaploids of Elymus containing ''SH'', ''SY'', ''SYH'', and ''SYW'' genomes and representing various geographical regions. Meiotic pairing was studied in the two target species and their hybrids. It is concluded from this study that (i) interspecific hybridization is fairly easy to perform although strong reproductive barriers exist between the species; (ii) Elymus caucasicus and E. longearistatus are allotetraploids, and share the diverged ''SY'' genomes; (iii) the divergence of ''SY'' genomes is correlated with the geographic distance between the Elymus spp. studied.

引用

页码：35 / 53

页数：19

共 35 条

[1] THE ANALYSIS OF MEIOSIS IN HYBRIDS .2. TRIPLOID HYBRIDS [J].