ISSN:
1615-6110
Keywords:
Poaceae
;
Leymus
;
Thinopyrum
;
Psathyrostachys
;
Intergeneric hybrids
;
chromosome pairing
;
genome analysis
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Intergeneric hybridizations were made betweenT. elongatum, and twoPsathyrostachys and fiveLeymus species. The seed set obtained onT. elongatum ×Leymus hybrids ranged from 5.65% to 20.00%, depending onLeymus species. The seed set obtained onT. elongatum ×Psathyrostachys hybrids ranged from 16.07% to 19.70%. Meiotic pairing at metaphase-I in JN diploid hybrids ofT. elongatum ×Psathyrostachys species revealed a very low level homology between the basic J and N genomes, and further demonstrated that the two genomes are quite diverged. Chromosome pairing in theT. elongatum ×Leymus secalinus hybrid averaged 15.19 univalents + 2.62 rod bivalents + 0.26 ring bivalents + 0.02 trivalents, suggesting that the partial Je chromosomes ofT. elongatum has homology withLeymus secalinus genomes.L. secalinus might have 3–4 chromosomes originating from Je genome.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00984641
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