Imidazolinone‐tolerant crops: history, current status and future

Tan, Siyuan; Evans, Richard; Dahmer, Mark L.; Singh, Bijay; Shaner, Dale L.

doi:10.1002/ps.993

Cited by 469 publications

(402 citation statements)

References 78 publications

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“…ALS inhibitors are widely used in agriculture due to the wide range of crops to which they are selective, and such selectivity is based on the ability of the crop to metabolize these products before they cause damage to plants (Tan et al 2005). …”

Section: Evaluation Of the Selectivity Of Herbicides Applied To Alfalmentioning

confidence: 99%

Herbicide selectivity in alfalfa crops

et al. 2013

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-This study aimed to determine the selectivity of herbicides applied in pre-and post-emergence for alfalfa crops. Three separate experiments were carried out under greenhouse conditions. The first experiment was arranged in a completely randomized design with three replications in a 4 x 11 + 1 factorial scheme , with eleven herbicides (bentazon, chlorimuron-ethyl, fomesafen, fluazifop-p-butyl, saflufenacil, imazethapyr, clethodim, nicosulfuron, imazaquin, haloxyfop-methyl and MSMA), four doses of each herbicide (0.5 D, 0.75 D, 1.0 D and 1.25 D, where D = recommended dose), plus an untreated control. The products were applied to alfalfa plants at the stage of 4 to 5 leaf pairs. In the second experiment, the effect of pre-emergent herbicides on early alfalfa development was observed through a completely randomized design with five replications in a 3 x 4 x 2 factorial scheme, with three herbicides (hexazinone, atrazine + simazine, S-metolachlor), four doses (0.5 D, 0.75 D, 1.0 D and 1.25 D), and two types of soil texture (loamy and clay soil), plus an untreated control. The third experiment evaluated the action of atrazine, 2,550 g ha -1 ; clomazone -600 g ha -1 ; diclosulam -25 g ha -1 ; diuron+hexazinone -936 + 264 g ha -1 and diuron+hexazinone +sulfometuron -1,386 + 391 + 33.35 g ha -1 on alfalfa sown at different times after herbicide application. The effects of the treatments on alfalfa were evaluated according to visual phytotoxicity symptoms, plant height, and biomass of roots and shoots. Among the herbicides applied at post-emergence, imazethapyr, clethodim, haloxyfop-p-methyl and MSMA were selective for alfalfa, while among those applied at pre-emergence, none were selective, regardless of soil texture. The results of the third experiment showed that the herbicides diclosulam, hexazinone + diuron and atrazine caused less toxicity in alfalfa plants.Keywords: phytotoxicity, Medicago sativa, residual period. (bentazon, chlorimuron-ethyl, fomesafen, fluazifop-p-butil, saflufenacil, imazethapyr, cletodim, nicosulfuron, imazaquim, haloxyfop-methyl e MSMA), quatro doses de cada herbicida (0,5D, 0,75D, 1,0D e 1,25D, sendo D = dose comercial) RESUMO -O objetivo desta pesquisa foi verificar a seletividade de herbicidas aplicados em pré e pós-emergência para a cultura da alfafa. Esta pesquisa foi composta por três experimentos distintos, realizados em casa de vegetação. O primeiro experimento foi conduzido em delineamento experimental inteiramente casualizado com três repetições, em esquema fatorial 11 x 4+1, sendo onze herbicidas

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Section: Evaluation Of the Selectivity Of Herbicides Applied To Alfalmentioning

confidence: 99%

Herbicide selectivity in alfalfa crops

et al. 2013

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“…The commercial success of IMI resistant mutants (Clearfield ® ) is partially due to less stringent regulations for mutants than for genetically modified (GM) organisms (Tan et al 2005), e.g. 'substantial equivalence' requires demonstration Table 3.…”

Section: Rs Rutherford Et Almentioning

confidence: 99%

Field and laboratory assessments of sugarcane mutants selected in vitro for resistance to imazapyr herbicide

Rutherford

Maphalala

Koch

et al. 2017

Crop Breed. Appl. Biotechnol.

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Seven imazapyr-tolerant mutant sugarcane plants, previously generated by in vitro mutagenesis, were studied. The imazapyr concentrations required to inhibit their acetolactate synthase (ALS basal activity) (IC 50 as μmoles acetoin h -1 mg -1 protein) were 0.77 -5.36 times greater than that of the N12 'parent'. The basal ALS activities of Mut1 and Mut6 were 1.4-fold higher than that of N12. When the mutants were sprayed with Arsenal ® GEN 2 (312 and 624 g a.i. imazapyr ha -1 ), 2 months after field planting, and evaluated 9 months later, live stalk height and number were significantly lowest in Mut2, Mut3 and the control N12. No differences in sucrose, fibre and estimated yield were observed amongst lines in untreated plots. Mutant plants germinated and grew in soil treated with the herbicide (at the lethal dose of 1248 g a.i. ha -1 ). The Mut lines tested in this study offer improved options for weed control.

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“…이 효소를 암호화하는 유전자는 토양세균의 크로 닝으로부터 얻었으며, dicamba 저항성 콩을 육성하는데 사 용되었다 (Herman et al, 2005). 2,4-D와 기타 옥신형 제초 (Tan et al, 2005).…”

Section: 제초제 저항성작물 개발 제초제 저항성작물은unclassified

Current Status and Perspective of Weed Management in Herbicide-Resistant Crops

Pyon¹,

Chang²,

Lee³

et al. 2013

Weed & Turfgrass Science

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ABSTRACT. This paper reviews current status of weed control practices in herbicide-resistant crops to examine weed management strategies in cope with cropping herbicide-resistant crops in the near future. Herbicide-resistant crops were rapidly adopted weed management technologies due to broad-spectrum weed control without crop injury. Transgenic glyphosate-resistant cultivars in soybean, corn, canola, and cotton were adopted to manage weeds at lower cost in a simplified weed management system. Dual stack crops with glyphosate and glufosinate resistance were developed to control glyphosate resistant weeds in corn, soybean and cotton. New multiple herbicide-resistant crops with resistance to glyphosate and glufosinate, acetolactate synthase (ALS) inhibitors, synthetic auxin herbicides, 4-hydroxyphenyl pyruvate dioxygenase (HPPD) inhibitors or acetyl Coenzyme A carboxylase (ACCase) inhibitors will expended the utility of existing herbicide technologies to manage the evolution of resistant weeds. However, herbicide resistant crops alone cannot solve weed problems and thus studies on diverse weed managements using an array of alternating herbicides of mode of action, mechanical, and cultural practices are needed for integrated weed management systems in the future.

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Imidazolinone‐tolerant crops: history, current status and future

Cited by 469 publications

References 78 publications

Herbicide selectivity in alfalfa crops

Herbicide selectivity in alfalfa crops

Field and laboratory assessments of sugarcane mutants selected in vitro for resistance to imazapyr herbicide

Current Status and Perspective of Weed Management in Herbicide-Resistant Crops

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