Inheritance of Provisia™ rice resistance to quizalofop-p-ethyl under laboratory and greenhouse environments

Montero, José Roberto Camacho; Linscombe, Steven D.; Sanabria, Yamid; Mosquera, Paola A.; Oard, James H.

doi:10.1007/s10681-019-2407-4

Cited by 18 publications

(20 citation statements)

References 12 publications

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“…The results from the assay II agreed with those reported by Camacho et al (2019) pertaining to the response of five quizalofop-resistant rice lines to quizalofop. Camacho and colleagues concluded that the rice lines they tested were indeed resistant, showing no phytotoxicity effects 14 days after treatment.…”

supporting

confidence: 87%

“…ha -1 quizalofop (Figures 1 and 2). Similarly, Camacho et al (2019) also demonstrated that cultivars Catahoula and Mermentau were extremely susceptible to quizalofop and the rate of 2 mg L -1 resulted in complete mortality of 2-3 leaf seedlings. Lancaster et al (2018b) reported 97 and 99% control of red rice with quizalofop (80, 120, or 160 g ha -1 ) applied at 6-and 2-leaf stage, respectively.…”

mentioning

confidence: 83%

“…The herbicide rate used by Lancaster et al (2018b) is 2 to 5 times the rate that provided 100% control of weedy rice and commercial cultivars evaluated at Epagri. Thus, the development and availability of quizalofop-resistant cultivars to the rice growers will contribute to a better weedy rice management (Andrade et al, 2018;Camacho et al, 2019), as long as the stewardship program is respected. We conclude that weedy rice accessions from rice fields in Brazil are susceptible to quizalofop at the rate of 50 g a.i.…”

mentioning

confidence: 99%

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Sensitivity of weedy rice populations to Quizalofop

et al. 2020

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supporting

confidence: 87%

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confidence: 83%

mentioning

confidence: 99%

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Sensitivity of weedy rice populations to Quizalofop

et al. 2020

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“…Parents and the F 1 plants (n = 2-12) of each one of the F 2 populations shown in Table 1 were treated with a 2× field rate of QPE (240 g ha −1 ) at the 2-to 3-leaf stage in 2013 RRS field trials (unpublished results) or at the greenhouse level as reported by Camacho et al (2019). Five F 2 populations (n = 58-158) shown in Table 1 and corresponding parents were planted in March 2014 at the RRS.…”

Section: Inheritance Studiesmentioning

confidence: 99%

“…Effective long-term control of noxious weeds such as red rice (Oryza sativa L.) represents a formidable challenge to the economic viability of the U.S. southern rice industry and other rice growing regions (Delouche et al 2007). Certain biotypes of red rice can infest commercial fields to cause substantial reductions in grain yield (Smith 1988), and conventional herbicides are generally not effective in these situations because red rice and commercial varieties are the same species (Zhang et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Inheritance of resistance and response of Provisia™ rice to quizalofop-p-ethyl under U.S. field conditions

et al. 2019

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Provisia™ rice was developed recently by the BASF Corporation for control of grass weeds and is complementary to existing Clearfield® technology. Our previous research showed that resistance of Provisia™ rice to the acetyl coenzyme-A carboxylase herbicide quizalofop-p-ethyl (QPE) in laboratory and greenhouse environments is governed by a single dominant Mendelian gene. However, these results may not be consistent in different populations or field environments. Therefore, the first objective of the current research is to determine the inheritance of resistance to QPE in rice using different segregating populations evaluated under U.S. field environments. The second objective is to evaluate the response of QPE-resistant breeding lines to various herbicide concentrations at two U.S. locations. Chi-square tests of 12 F2 populations evaluated in Louisiana during 2014 and 2015 indicated that QPE seedling resistance at 240 g ai ha−1 was governed by a single dominant Mendelian gene with no observable maternal effects. Similar results were obtained in five F3 populations derived from the aforementioned F2 populations. Allele-specific SNP markers for QPE resistance also followed Mendelian segregation in the five F2 populations. For the second objective, six QPE-resistant inbred lines showed transient leaf injury at 1× (120 g ai ha−1) or 2× (240 g ai ha−1) field rates 7 and 21 d after treatment (DAT). However, a trend of reduced injury (recovery) from 7 through 33 DAT was observed for all breeding material. No differences in grain yield were found between untreated QPE-resistant lines and those treated with 1× or 2× QPE field rate. Single gene inheritance and good levels of QPE herbicide field resistance in different genetic populations suggest feasibility for rapid and effective development of new QPE-resistant varieties and effective stewardship of the Provisia™ technology.

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Assessing clethodim spot spraying applications for control of problematic weedy rice and other grasses in California rice fields

Unan,

Galvin,

Becerra‐Alvarez

et al. 2023

Agronomy Journal

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Spot spraying applications offer the opportunity to target specific weeds in a field, while simultaneously reducing herbicide usage and increasing the long‐term efficacy of chemical control options. The studies focused on controlling California weedy rice accessions (Oryza spp.), and problematic grass weeds with a spot spray application of clethodim in a flooded rice system. The efficacy of incorporating nonionic surfactant (NIS) to clethodim applications was also assessed. Dose response experiments were carried out in a greenhouse on five weedy rice accessions, common grass rice weeds, and cultivated rice varieties L207, M105, M206, M209, M211, and S102 to determine the dose needed to affect these populations. Clethodim was applied in a field setting to assess spot spraying efficacy, the likelihood of dispersion which herbicide movement in the water, and crop injury. Clethodim successfully controlled weedy rice and grasses in the greenhouse. The effective rates to control 90% of the five test populations (ED90) were between 51 to 74 g ai ha−1 clethodim for weedy rice accessions. Adding nonionic surfactant to clethodim increased its efficacy by 1.6 to 1.9‐fold. Cultivated rice varieties did not exhibit any tolerance to clethodim, however, spot spraying applications at 150 g ai ha−1 clethodim did not cause any dispersion in the field. Clethodim spot spray application was effective both at the 3 to 4 leaf growth stage and tillering growth stage for weedy rice.This article is protected by copyright. All rights reserved

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Inheritance of Provisia™ rice resistance to quizalofop-p-ethyl under laboratory and greenhouse environments

Cited by 18 publications

References 12 publications

Sensitivity of weedy rice populations to Quizalofop

Sensitivity of weedy rice populations to Quizalofop

Inheritance of resistance and response of Provisia™ rice to quizalofop-p-ethyl under U.S. field conditions

Assessing clethodim spot spraying applications for control of problematic weedy rice and other grasses in California rice fields

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