A brief overview of the state research on selection new constant biotechnological lines – donors glyphosate resistance and prospects creating hybrids sugar beet are presented. Experimental data nature inheritance in different genotypes (mmSxxzz, mmNxxzz, MMTOp, etc.) were obtained. For first time, separate joint fruit lines-donors with 90-100% In competitive environmental tests, glyphosate-tole...

Natural tolerance of Ipomoea lacunosa to glyphosate has made it problematic in the southeastern U.S. since the adoption of glyphosate-resistant crops. Experiments were conducted to determine (i) the variability in tolerance to glyphosate among accessions, (ii) if there is any correlation between metabolism of glyphosate to aminomethylphosponic acid (AMPA) or sarcosine and the level of tolerance...

Strong human-mediated selection via herbicide application in agroecosystems has repeatedly led to the evolution of resistance in weedy plants. Although resistance can occur among separate populations of a species across the landscape, the spatial scale of resistance in many weeds is often left unexamined. We assessed the potential that resistance to the herbicide glyphosate in the agricultural ...

Evolutionary biologists explain the maintenance of intermediate levels of defense in plant populations as being due to trade-offs, or negative genetic covariances among ecologically important traits. Attempts at detecting trade-offs as constraints on the evolution of defense have not always been successful, leading some to conclude that such trade-offs rarely explain current levels of defense i...

For more than two decades, glyphosate has been relied on to control summer annual weeds in fallow systems Australia’s northern grains region. With numerous cases of resistance reported weed species collected from this region, there are concerns about the future viability herbicide. A random seed collection survey was conducted between 2016 and 2018 with aim determining frequency distribution ot...

Abstract The widespread evolution of glyphosate-resistant (GR) Bassia scoparia in the U.S. Great Plains poses a serious threat to long-term sustainability GR sugar beet. Glyphosate resistance B. is due an increase EPSPS (5-enolpyruvyl-shikimate-3-phosphate) gene copy number. variation copies among individuals from within single population indicated differential response glyphosate selection. Wi...

Kochia ( Bassia scoparia (L.) A.J. Scott) is a problematic tumbleweed, which infests row crops and ruderal areas within western Canada. Herbicide resistance makes kochia management challenging for producers. Widespread to acetolactate synthase-inhibitors, evolution spread of glyphosate resistance, the occurrence dicamba has been previously noted in Saskatchewan. This study's objective was evalu...

Background: The presence of pesticides is very prevalent in surface waters of Iran. These toxic substances may accumulate in the food chain and cause serious ecological and health problems. The aim of this study was to determine the acute toxicity of glyphosate, deltamethrin and pretilachlor as potential dangerous organic pesticides to assess lethal effects of these chemicals agents to the Gu...

A previously unknown glyphosate resistance mechanism, amplification of the 5-enolpyruvyl shikimate-3-phosphate synthase gene, was recently reported in Amaranthus palmeri. This evolved mechanism could introgress to other weedy Amaranthus species through interspecific hybridization, representing an avenue for acquisition of a novel adaptive trait. The objective of this study was to evaluate the p...