Field trials and tribulations-making sense of the regulations for experimental field trials of transgenic crops in Europe

ABSTRACT An experimental protocol has been developed for assessing the efficacy of bioremediation strategies for the treatment of petroleum contaminated shoreline sediments. It is a framework for the design of experimental field trials that enables independent organizations to compare the results of experiments conducted in different environments. Coordinated studies of this nature are needed to formulate operational guidelines for the application of bioremediation agents during oil spill response situations.

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An Insight into the Approaches to Target Begomoviruses: RNAi Perspective

International Journal of Plant and Environment ◽

10.18811/ijpen.v5i03.7 ◽

2019 ◽

Vol 5 (03) ◽

pp. 192-199

Author(s):

Saurabh Verma

Keyword(s):

Rna Silencing ◽

Crop Production ◽

Transgenic Crops ◽

Field Trials ◽

Plant Viruses ◽

Future Perspective ◽

Viral Diseases ◽

The World ◽

Insight Into ◽

Review Current

The destructive nature of viral diseases and its epidemic level of infection demand for a specific, effective and sustainable strategy. Begomovirus being the most destructive class of plant viruses, causes a widespread loss to crop production in the world. RNA silencing approaches have been implemented in past to raise virus-resistant transgenic crops. Some have found success while others failed terribly either in the laboratory or in field trials. In the present and future context, reviewing the potential of this technique is essential as Indian sub-continent region has an agriculture-based economy. This article aimed to review current research and future perspective in efficient targeting of begomovirus borne diseases in crops using RNA silencing as a molecular tool.

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Experimental field trials of a utility AMR power line communication system analyzing channel effects and error correction methods

2007 IEEE International Symposium on Power Line Communications and Its Applications ◽

10.1109/isplc.2007.371113 ◽

2007 ◽

Cited By ~ 1

Author(s):

Alessandro Lasciandare ◽

Stefano Garotta ◽

Fabio Veroni ◽

Emile Saccani ◽

Lorenzo Guerrieri ◽

...

Keyword(s):

Error Correction ◽

Communication System ◽

Field Trials ◽

Power Line ◽

Power Line Communication ◽

Experimental Field ◽

Channel Effects ◽

System Analyzing

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Transgenic crops : new weed problems for Canada?

Phytoprotection ◽

10.7202/706182ar ◽

2005 ◽

Vol 80 (2) ◽

pp. 71-84 ◽

Cited By ~ 46

Author(s):

S.I. Warwick ◽

H.J. Beckie ◽

E. Small

Keyword(s):

Wild Species ◽

A Priori ◽

Transgenic Crops ◽

Field Trials ◽

Current Status ◽

Gene Frequencies ◽

Genetic Changes ◽

Herbicide Resistant ◽

Ecological Region ◽

Case Basis

Over 25 000 transgenic field trials were conducted globally from 1986-1997, and many transgenic crops, including soybean (Glycine max), maize (Zea mays), tobacco (Nicotiana tabaccum), cotton (Gossypium hirsutum), canola (Brassica napus, B. rapa), tomato (Lycopersicon esculentum) and potato (Solarium tuberosum) have been commercially released. There has been a high adoption rate, with at least 28 million ha reported for 1998, with herbicide- and insect-resistant plants occupying 71 and 28% of the releases, respectively. The current status of commercial production of transgenic crops in Canada is summarized. Transgenic crops have the potential to change weed communities/populations in three principal ways, via: 1 ) escape and proliferation of the transgenic plants as 'weedy' volunteers with subsequent displacement of the crop, weed and/or natural vegetation; 2) hybridization with and transgene infiltration into related weedy and/or wild species, resulting in invigorated weeds and/or alteration of natural gene frequencies in these species; and 3) genetic changes in populations of unrelated species, as a result of changes to the environment, in particular herbicide-resistant (HR) transgenic crops and the development of HR weeds. Potential risk can be estimated a priori using knowledge of the systematics of crop/wild/weed complexes. Risk must be assessed on a case-by-case basis for each crop, each country/ecological region, and for each trait. Potential weed risks will be greater if crop volunteers are predisposed to becoming weedy, are well adapted to the Canadian climate and if sexually compatible wild species are present.

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Gene flow from herbicide resistant transgenic soybean to conventional soybean and wild soybean

Applied Biological Chemistry ◽

10.1186/s13765-019-0461-1 ◽

2019 ◽

Vol 62 (1) ◽

Cited By ~ 6

Author(s):

Hye Jin Kim ◽

Do Young Kim ◽

Ye Seul Moon ◽

In Soon Pack ◽

Kee Woong Park ◽

...

Keyword(s):

Gene Flow ◽

Glycine Soja ◽

Wild Soybean ◽

Transgenic Crops ◽

Field Trials ◽

Transgenic Soybean ◽

Herbicide Resistant ◽

Commercial Cultivation ◽

Detectable Rate ◽

Food And Feed

Abstract Gene flow from transgenic crops to conventional cultivars or wild relatives is a major environmental and economic concern in many countries. South Korea is one of the major importer of transgenic crops for food and feed, although commercial cultivation of transgenic crops is not yet allowed in this country. This study evaluated gene flow from the herbicide glyphosate- and glufosinate-resistant transgenic soybean (Glycine max) to five non-transgenic soybean cultivars and three accessions of wild soybean (Glycine soja). Field trials were conducted over 2 years, and gene flow was monitored up to 10 m distance from the pollen source. The results indicated that the detectable rate of gene flow from transgenic to conventional soybeans varied between 0 and 0.049% in both 2014 and 2015 field trials, while no hybrids were detected among wild soybean progenies. The highest rate of gene flow was found in the progenies of the Bert cultivar, which exhibited the longest period of flowering synchronization between the pollen donor and the recipient. In addition, overall gene flow rates declined with increased distance from the transgenic soybean plot. Gene flow was observed up to 3 m and 8 m from the transgenic soybean plot in 2014 and 2015, respectively. Our results may be useful for developing measures to prevent gene flow from transgenic soybean.

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Reproductive Biology of Cassava (Manihot esculenta Crantz) and Isolation of Experimental Field Trials

Crop Science ◽

10.2135/cropsci2007.05.0279 ◽

2008 ◽

Vol 48 (1) ◽

pp. 49-58 ◽

Cited By ~ 21

Author(s):

Mark E. Halsey ◽

Kenneth M. Olsen ◽

Nigel J. Taylor ◽

Paul Chavarriaga-Aguirre

Keyword(s):

Reproductive Biology ◽

Manihot Esculenta ◽

Field Trials ◽

Manihot Esculenta Crantz ◽

Experimental Field

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THE USE OF DEFLECTORS FOR DEPLOYMENT OF OIL BOOMS IN RIVERS

International Oil Spill Conference Proceedings ◽

10.7901/2169-3358-1979-1-411 ◽

1979 ◽

Vol 1979 (1) ◽

pp. 411-417 ◽

Cited By ~ 1

Author(s):

G. D. Greene ◽

A. Z. Brodsky ◽

M. E. Charles ◽

D. Mackay

Keyword(s):

Deflection Angle ◽

Field Trials ◽

Experimental Results ◽

Hydrodynamic Theory ◽

Flowing Water ◽

Current Direction ◽

Experimental Field ◽

Rapid Deployment ◽

Flowing Waters ◽

River Current

ABSTRACT A study was conducted to design, develop, and test deflectors for use in aligning oil containment booms at an angle to the current direction in flowing waters. A series of experimental field trials were undertaken in which booms, fitted with deflectors, were either towed in a lake or deployed in flowing water. During the program, several design improvements were incorporated and a final suggested design was established. A simple hydrodynamic theory has been devised which enables the boom deflection angle to be predicted from the number, dimensions, and configuration of the deflectors and the dimensions of the boom. Agreement between the simplified theory and the experimental results is satisfactory. A graphical procedure has been devised by which an on-scene commander can calculate the requirements for deflecting a given boom. Two promising applications for deflectors are discussed. A permanently deployed system could be used across a waterway subject to periodic oil discharges. A boom with deflectors closed could be moored alongshore in sensitive areas, allowing rapid deployment into the river current upon release of the deflectors.

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