EurekaMag.com logo
+ Site Statistics
References:
48,252,460
Abstracts:
22,798,453
+ Resolve Accession
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
Submit PDF Full TextSubmit PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Electrophoretic variation in triazine resistant and susceptible populations of amaranthus retroflexus


, : Electrophoretic variation in triazine resistant and susceptible populations of amaranthus retroflexus. New Phytologist 104(4): 661-670

Patterns of electrophoretic variation in seven enzyme systems were investigated in one triazine-resistant and nine susceptible populations of Amaranthus retroflexus L. collected along an 800 km north-south transect in southern Ontario, Canada. The resistant population occurs in a field in which continuous maize production and intensive use of atrazine had been combined over a 15-year period. The nine susceptible populations were collected from both waste ground and cultivated fields. One would expect the genetic make-up of the triazine-resistant population to be simpler than that of susceptible populations as a result of founder effects from a single or only a few resistant founder plants. Our results confirmed this prediction. The resistant population showed a marked reduction in genetic variation, as compared with susceptible populations. One enzyme, GDH [glutamate dehydrogenase], was monomorphic in all 10 populations, the other six enzymes (IDH [isocitrate dehydrosenase], GOT [aspartate aminotransferase], 6PGD [6-phosphogluconate dehydrogenase], PGI [phosphoglucose isomerase], LAP [leucine aminopeptidase] and MDH [malate dehydrogenase]) showed varying degrees of phenotypic polymorphism. The resistant population was variable for three of the seven enzyme systems examined. This was in contrast to the homogeneity observed in triazine-resistant populations of Chenopodium album L. from Ontario. Differences in within-population phenotypic polymorphism among the nine susceptible populations of A. retroflexus were not correlated with habitat or latitude of collection sites.

(PDF 0-2 workdays service)

Order PDF Full Text

Close
Close

Click here to order any other PDF Full Text


Accession: 005349182

PDF Full Text: Submit


Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:
Close
Close

Other references

Crepet William L., 1972: Investigations of North America cycadeoids; pollination mechanisms in Cycadeoidea. American Journal of Botany 59(10): 1048-1056

Anonymous, 1983: Reports and publications 1982-1983. BC X Canadian Forestry Service Pacific Forest Research Centre: (243)

Tilson, H. G., 1958: Prices, costs, merchandising, Kentucky convention themes. Dr. J. Herron of Kentucky University reported a saving of almost $1 per 640 ft2 bed of Taxus cuttings by the use of 2, 4-DES 3 pounds per acre applied 4 times during the growing season.

Nagasaki T.; Sugita M.; Fukawa H., 1973: Screening of 3 4 di substituted phenyl l alanine producing microorganisms. Agricultural & Biological Chemistry 37(3): 587-591

Yakovenko, M. Ya, 1963: The development of hunting for the White Sea crested seal and the problem of its numbers. Aerial photographic estimates of the population size of the White Sea crested seal and a study of the age composition of those bagged showed a tendency to a further reduction in the average age (7-8 years) of those taken. This is clearly noticeabl...

Stakenburg M., 1979: A reflex hammer for accurate measurement of reflex latency. A hammer equipped with a piezo-electric crystal is suitable to measure fast tendon jerk latencies [in humans] more accurately than a hammer equipped with a mechanical switching device. Measurements show that the hammer supplied with a piezo-electr...

Alexandrowicz S. W., 1991: Late Quaternary molluscan assemblages of the Bedkowska Valley (Cracow Upland). Bulletin of the Polish Academy of Sciences, Earth Sciences: , Pages 101-110. 1991.

Dumont, R.; Mottin, M. F., 1981: Peasant liberation. The basis for a new rural policy in Senegal. Senegal has suffered declining national production since Independence. The agricultural sector is declining and cereals and other foods must be imported. Whilst the drought is one contributory cause of this, other factors are: continuous cultivati...

Williamson, Anne; Patrylo, Peter R.; Lee, Sunghoon; Spencer, Dennis D., 2001: Physiology of human cortical neurons adjacent to cavernous malformations and tumors. Epilepsia 42(Supplement 7): 208-209

Anonymous, 2012: Electric transmission Challenges of interconnecting renewable resources to the transmission grid. The development of utility-scale renewable projects (USRPs) is fraught with challenges and potential pitfalls that even experienced project development and utility professionals can find difficult to manage. These challenges include issues related...