Open AccessInheritance of dense spike in diploid wheat and Aegilops squarrosa
Author(s) -
GONCHAROV N. P.,
KONDRATENKO E. Ya.,
KAWAHARA T.
Publication year - 2002
Publication title -
hereditas
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 50
eISSN - 1601-5223
pISSN - 0018-0661
DOI - 10.1034/j.1601-5223.2002.01630.x
Subject(s) - biology , aegilops , ploidy , common wheat , botany , gene , genome , interspecific competition , genetics , chromosome
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 F 1 hybrid plants T. compactum × T. palmovae ( 2n =35, A u A b BDD 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.