Inheritance of dense spike in diploid wheat and Aegilops squarrosa

The individuals of diploid wheat Triticum boeoticum, t.monococcum and T. sinskajae and goatgrass Aegilops squarrosa were picked out with screening the dense spike characteristics. The dense‐spike accessions were discovered in diploid wheat (T. sinskajae) and Ae. squarrosa. Inheritance of the dense s...

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Bibliographic Details
Published in:Hereditas 2002-11, Vol.137 (2), p.96-100
Main Authors: GONCHAROV1, N. P., KONDRATENKO1, E. Ya, KAWAHARA2, T.
Format: Article
Language:English
Subjects:
Aegilops squarrosa
Diploidy
Poaceae - genetics
Triticum - genetics
Triticum compactum
Triticum monococcum
Triticum monococcum aegilopoides
Triticum sinskajae
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Summary:The individuals of diploid wheat Triticum boeoticum, t.monococcum and T. sinskajae and goatgrass Aegilops squarrosa were picked out with screening the dense spike characteristics. The dense‐spike accessions were discovered in diploid wheat (T. sinskajae) and Ae. squarrosa. Inheritance of the dense spike was studied. The trait was found to be controlled by a recessive gene in T. sinskajae and by an incomplete dominant gene in Ae. squarrosa. The dosage effect of dominant gene C was detected in interspecific pentaploid F1 hybrid plants T. compactum×T. palmovae (2n=35, AuAbBDD genome). The spike of pentaploid hybrid was not so dense as compared to hexaploid wheat T. compactum. This is the first report showing similarity of the expression of dominant gene C on D genome of the hexaploid wheat to that of dense spike gene in Ae. squarrosa. The existence of dense‐spike accessions of Ae. squarrosa allows us to hypothesize that the origin of T. compactum is independent from that of common wheat.
ISSN:0018-0661
1601-5223
DOI:10.1034/j.1601-5223.2002.01630.x