Crop Science Grow Your Career with CSSA
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Published in Crop Sci 10:63-66 (1970)
© 1970 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Burton, G. W.
Right arrow Articles by Jackson, J.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Burton, G. W.
Right arrow Articles by Jackson, J.
Agricola
Right arrow Articles by Burton, G. W.
Right arrow Articles by Jackson, J.

Effect of Ploidy on Fertility and Heterosis in Pensacola Bahiagrass1

Glenn W. Burton, Ian Forbes, Jr. and James Jackson2

Diploid and tetraploid sectors isolated from seven mixoploid plants derived from Pensacola bahiagrass, Paspalum notatum var. saurae Parodi, seed treated with colchicine were selected to study the effect of ploidy on seed set and heterosis. Doubling the chromosome number did not improve the self-fertility of the highly self-incompatible diploid clones. Diploids set seed equally well in diploid or in diploid-tetraploid polycrosses but tetraploids that set seed well in tetraploid polycrosses set less than half as much seed in etraploid-diploid polycrosses. Single-head diploid x diploid and tetraploid x tetraploid matings set nine and four times more seed, respectively, than diploid x tetraploid or tetraploid x diploid matings. Tetraploid x tetraploid hybrids generally yielded less forage than diploid x diploid hybrids involving the same genotypes. Otherwise, ploidy had little, if any, effect on the expression of heterosis.

Key Words: Paspalum notatum var. saurae Parodi • Mixoploid • Colchicine • Diploid • Tetraploid • Self-incompatibility • Polycross

1 Cooperative investigations of the Crops Research Division, Agricultural Research Service, U.S. Department of Agriculture, and the University of Georgia, College of Agriculture Experiment Stations, Coastal Plain Experiment Station, Tifton, Georgia 31794. Journal Series Paper No. 570, University of Georgia, College of Agriculture Experiment Stations.

2 Research Geneticist and Research Agronomist, Crops Research Division, ARS, USDA, and the University of Georgia, College of Agriculture Experiment Stations, Coastal Plain Station, Tifton, Georgia; and Extension Agronomist, Extension Service, Athens, Georgia (formerly Research Agronomist, University of Georgia, College of Agriculture Experiment Stations, Coastal Plain Station, Tifton, Georgia); respectively.

Received for publication July 22, 1969.




HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
The SCI Journals Agronomy Journal Vadose Zone Journal
Journal of Plant Registrations Soil Science Society of America Journal
Journal of Natural Resources
and Life Sciences Education		 Journal of
Environmental Quality
Copyright © 1970 by the Crop Science Society of America.