Article

Intergeneric Hybridization between Species of Leymus, Psathyrostachys and Hordeum (Poaceae, Triticeae)

DOI:http://dx.doi.org/10.1006/anbo.1994.1059
Source: OAI

ABSTRACT A total of 132 intergeneric crossing attempts (49 combinations) involving species of Leymus Hochst., Psathyrostachys Nevski and Hordeum L. were performed, of which 103 were between Hordeum and Leymus. Embryo rescue was used throughout the experiment. Hybrids between Leymus and Psathyrostachys were difficult to obtain. Hybrid progeny were relatively easily obtained when crossing Hordeum and Leymus. Plants from 20 different combinations were obtained. Nineteen of these have not previously been reported. Meiotic analysis of three hybrid combinations of Hordeum × Leymus is reported. The high frequency of univalents in meiotic interphase (MI) indicates that allosyndetic chromosome pairing did not occur, supporting the assumption that the genomes of Leymus are non-homologous to the H genomes of Hordeum. Copyright 1994, 1999 Academic Press

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Keywords

132 intergeneric
 
1999 Academic Press
 
20 different combinations
 
49 combinations
 
allosyndetic chromosome pairing
 
Embryo rescue
 
genomes
 
H genomes
 
Hordeum L
 
Hordeum × Leymus
 
hybrid combinations
 
Leymus
 
Leymus Hochst
 
Meiotic analysis
 
meiotic interphase
 
Plants
 
Psathyrostachys
 
Psathyrostachys Nevski
 
univalents