Abstract
Hybrids including Hystrix patula, H. duthiei and H. longearistata were obtained and genetic relationships among them were studied. Meiotic pairing in hybrids of H. duthiei × Psathyrostachys juncea (Ns), H. longearistata × Psa. juncea (Ns), Leymus multicaulis (NsXm) × H. duthiei, L. multicaulis (NsXm) × H. longearistata, Elymus sibiricus (StH) × H. patula, Roegneria ciliaris (StY) × H. patula, R. ciliaris (StY) × H. duthiei and R. ciliaris (StY) × H. longearistata averaged 5.76, 5.44, 11.94, 10.88, 10.08, 3.57, 0.46 and 0.90 bivalents per cell, respectively. The results indicated that H. duthiei and H. longearistata had the NsXm genomes of Leymus, while H. patula contained the StH genomes and had a low genome affinity with the StY genomes of Roegneria. Results of genome-specific RAPD assay were comparable with the chromosome pairing data. According to the genomic system of classification in Triticeae, H. patula should be considered as Elymus hystrix L., while H. duthiei and H. longearistata as Leymus duthiei and Leymus duthiei ssp. longearistata, respectively.
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Abbreviations
- CTAB:
-
cetyltrimethylammonium bromide
- PMC:
-
pollen mother cells
- RAPD:
-
random amplified polymorphic DNA
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Zhang, HQ., Zhou, YH. Genetic relationships among Hystrix patula, H. duthiei and H. longearistata according to meiotic studies and genome-specific RAPD assay. Biol Plant 53, 45–52 (2009). https://doi.org/10.1007/s10535-009-0007-1
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DOI: https://doi.org/10.1007/s10535-009-0007-1