High survival frequencies at low herbicide use rates in populations of Lolium rigidum result in rapid evolution of herbicide resistance
نویسندگان
چکیده
منابع مشابه
Evolved polygenic herbicide resistance in Lolium rigidum by low-dose herbicide selection within standing genetic variation
The interaction between environment and genetic traits under selection is the basis of evolution. In this study, we have investigated the genetic basis of herbicide resistance in a highly characterized initially herbicide-susceptible Lolium rigidum population recurrently selected with low (below recommended label) doses of the herbicide diclofop-methyl. We report the variability in herbicide re...
متن کاملPollen-Mediated Movement of Herbicide Resistance Genes in Lolium rigidum
The transfer of herbicide resistance genes by pollen is a major concern in cross-pollinated species such as annual ryegrass (Lolium rigidum). A two-year study was conducted in the greenhouse, under favorable conditions for pollination, to generate information on potential maximum cross-pollination. This maximum cross-pollination rate was 56.1%. A three-year field trial was also conducted to stu...
متن کاملRapid Evolution of Herbicide Resistance by Low Herbicide Dosages
Herbicide rate cutting is an example of poor use of agrochemicals that can have potential adverse implications due to rapid herbicide resistance evolution. Recent laboratory-level studies have revealed that herbicides at lower-than-recommended rates can result in rapid herbicide resistance evolution in rigid ryegrass populations. However, crop-field-level studies have until now been lacking. In...
متن کاملCultural control of herbicide-resistant Lolium rigidum Gaud. populations in winter cereal in Northeastern Spain
Lolium rigidum Gaud. is one of the most common weed species in winter cereals in Northeastern Spain. Herbicide resistance has been growing since the mid 90’s and exclusive herbicide use is not enough in many cases, so that it is necessary to combine as many control tools as possible. Six field trials have been conducted during the cropping seasons 200102, 2002-03 and 2003-04 on winter cereal in...
متن کاملmolecular basis for resistance of lolium rigidum populations to aryloxyphenoxy propionate herbicide through dcaps
to study the molecular basis for resistance of lolium rigidum populations (from fars province) to aryloxyphenoxy propionate herbicide through dcaps method, an experiment was conducted at the biotechnology laboratory of shiraz university. eighteen populations of l. rigium suspected of herbicide resistance, from zarghan, fasa. noorabad and firoozabad areas which had survived a recomended dose of ...
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ژورنال
عنوان ژورنال: Heredity
سال: 2005
ISSN: 0018-067X,1365-2540
DOI: 10.1038/sj.hdy.6800751