Author:
Thompson Curtis R.,Thill Donald C.,Shafii Bahman
Abstract
Growth, competitiveness, and fecundity differences between resistant (R) and susceptible (S) biotypes affect management strategies. This greenhouse research examines growth, competitiveness, and fecundity of chlorsulfuron-resistant (R) and -susceptible (S) kochia collected from North Dakota and Kansas. In noncompetitive studies, sulfonylurea R and S kochia biotypes from Kansas and North Dakota had similar growth rates and seed production. All biotypes produced about 12000 seeds per plant. Competitiveness of R and S biotypes from Kansas was similar. Interbiotype competition reduced R and S plant biomass more than intrabiotype competition. The relative competitiveness of the R and S biotypes was 0.75 and 0.85, respectively. The resistance trait did not reduce growth, seed production, and competitiveness of R compared to S kochia in greenhouse studies.
Publisher
Cambridge University Press (CUP)
Subject
Plant Science,Agronomy and Crop Science
Reference61 articles.
1. EC71D single channel time control. Paragon Electric Co., Inc., P.O. Box 28, Two Rivers, WI 54241.
2. Ecological Fitness of Senecio vulgaris and Amaranthus retroflexus Biotypes Susceptible or Resistant to Atrazine
3. An alternative approach to analysis of mixed cropping experiments. I. Estimation of competition effects;Spitters;Neth. J. Agric. Sci.,1983
4. R-11 (octyl phenoxy polyethoxy ethanol, isopropanol, and compounded silicone, 90%). Wilbur-Ellis, 320 California St., San Francisco, CA 94104.
Cited by
67 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献