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 (5)
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by KREMER, E.
Right arrow Articles by KROPFF, M. J.
Right arrow Search for Related Content
PubMed
Right arrow Articles by KREMER, E.
Right arrow Articles by KROPFF, M. J.
Agricola
Right arrow Articles by KREMER, E.
Right arrow Articles by KROPFF, M. J.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Annals of Botany 83: 637-644, 1999
© 1999 Annals of Botany Company

Comparative Growth of Triazine-susceptible and -resistant Biotypes ofSolanum nigrumat Different Light Levels

E. KREMER and M. J. KROPFF+

Wageningen Agricultural University, Department of Theoretical Production Ecology, P.O.B. 430, 6700, AK, Wageningen, The Netherlands

July 16, 1998 ; November 19, 1998 . February 16, 1999

Effects of variation in light intensity on growth of plants from five different populations of triazine-susceptible and -resistantSolanum nigrumwere studied in growth chambers at three light levels. Plants were grown without intraspecific competition and with optimal mineral nutrition. After 29 d, the mean biomass of resistant biotypes was about 25% less than that of susceptible biotypes at all light levels. Curve-fitting growth analysis showed that this was the result of a lower initial biomass of the resistant biotype at the start of the experiment, as the relative growth rates (RGR) of the susceptible and resistant biotypes in the early growth phase were equal. Specific leaf area (SLA) was higher for the resistant biotype but this was compensated for by a lower net assimilation rate (NAR). The fraction of dry matter invested in leaves was the same for both biotypes, but the resistant biotype produced more leaf area per unit leaf weight. The equal RGR of the susceptible and resistant biotypes in the early growth phase may have implications for the competitive ability and population dynamics of a population with resistant biotypes.Copyright 1999 Annals of Botany Company

Black nightshade, growth analysis, light level, management strategies, RGR, SLA,Solanum nigrum, triazine resistance, weed control.


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.