Skip Navigation

This Article
Right arrow FREE Full Text (PDF) Freely available
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in ISI Web of Science
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrow Search for citing articles in:
ISI Web of Science (1)
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Li, Y. G.
Right arrow Articles by Sokolov, V. A.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Li, Y. G.
Right arrow Articles by Sokolov, V. A.
Agricola
Right arrow Articles by Li, Y. G.
Right arrow Articles by Sokolov, V. A.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Annals of Botany 85: 845-850, 2000
© 2000 Annals of Botany Company

Sectional Delineation of Sexual Tripsacum dactyloides–T. maizar Allotriploids

Yong G. Li, Chet L. Dewald+ and Victor A. Sokolov

USDA-ARS, Southern Plains Range Research Station, Woodward, Oklahoma, 73801, USA Institute of Cytology & Genetics, Novosibirsk, 630090, Russia

Received: 5 January 2000 ; Returned for revision: 2 February 2000 . Accepted: 23 February 2000

In recent studies it was determined that certain allotriploids produced from crosses of sexual diploidTripsacum dactyloides (2 n = 2 x = 36), sectionTripsacum and apomictic tetraploid T. maizar(2 n = 4x = 72), section Fasciculata reproduce sexually. Backcrossing progenies can be clearly classified to either sect. Tripsacum or sect. Fasciculata due to their distinctively different inflorescence phenotype. More importantly, the sectional delineation of the progeny shifted in the direction of the pollinator through genome substitution, which is not to be expected following just one generation of backcrossing in a normal breeding program. Our main objective was to investigate whether there were potential genetic differences between the genomes from sect. Tripsacum and sect. Fasciculata at the molecular level that correlate with such morphological shifts in these unusual sexual allotriploids. Cluster analysis based on randomly amplified polymorphic DNA (RAPD) profiles of these sexual allotriploids clearly indicated that substantial differences among many loci do exist between T. dactyloides and T. maizar. These results support the taxonomic classification of Tripsacum species into section Tripsacum and sectionFasciculata . Copyright 2000 Annals of Botany Company

Tripsacum allotriploid, sectional delineation, RAPD, inflorescence morphology


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?




Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.