The physiological and biochemical basis for quinclorac resistance in a false cleavers (Galium spurium L.) biotype was investigated. There was no difference between herbicide resistant (R) and susceptible (S) false cleavers biotypes in response to 2,4-D, clopyralid, glyphosate, glufosinate-ammonium, or bentazon. On the basis of GR(50) (growth reduction of 50%) or LD(50) (lethal dose to 50% of te...

Glyphosate and glufosinate are widely used herbicides and, thus, there is an interest in the reliable and sensitive determination of glyphosate in water and food. These pesticides are diffi cult to extract and analyze because of their high polarity. In this report, we describe an automated workfl ow for the FMOC-derivatization, sample cleanup, and LC/MS/MS analysis using a GERSTEL MultiPurpose ...

Natural hybridization and backcrossing between Aegilops cylindrica and Triticum aestivum can lead to introgression of wheat DNA into the wild species. Hybrids between Ae. cylindrica and wheat lines bearing herbicide resistance (bar), reporter (gus), fungal disease resistance (kp4), and increased insect tolerance (gna) transgenes were produced by pollination of emasculated Ae. cylindrica plants....

Abstract The complementary modes of action 4-hydroxyphenylpyruvate dioxygenase (HPPD) and photosystem II (PSII) inhibitors have been credited for the synergistic weed control improvement several species. Recent research discovered that reactive oxygen species (ROS) generation subsequent lipid peroxidation is cause cell death by glutamine synthetase inhibitor glufosinate. Therefore, a basis syne...

Abstract The objectives of this study were to determine if the level and consistency glyphosate-resistant (GR) horseweed control prior soybean planting can be improved by (i) adding halauxifen-methyl, 2,4-D ester, saflufenacil, metribuzin, or dicamba glufosinate, (ii) increasing rate glufosinate from 500 1,000 g ai ha –1 , (iii) 28% urea ammonium nitrate (UAN) as carrier solution. During a 2-yr...

Abstract Downy brome is a troublesome facultative winter-annual grass weed that invades agricultural and nonagricultural lands in western North America can cause substantial crop yield losses particularly no-till winter wheat. Glyphosate-resistant (GR) downy was identified southern Alberta 2021, representing the first confirmation of GR Canada. This study designed to evaluate alternative herbic...

Glyphosate-resistant corn and soybean are grown in rotations in the Midwest, including Nebraska. Volunteer corn is a problematic weed in soybean fields because it causes harvest problems, reduces yield and seed quality, and potentially harbors insects, pests, and diseases. Several pre-packaged herbicides have been registered in soybean in recent years, but response of volunteer corn to these he...

BACKGROUND In soybean somatic embryo transformation, the standard selection agent currently used is hygromycin. It may be preferable to avoid use of antibiotic resistance genes in foods. The objective of these experiments was to develop a selection system for producing transgenic soybean somatic embryos without the use of antibiotics such as hygromycin. RESULTS When tested against different a...

Herbicide resistant crops are commercially advantageous for efficient field productivity by enabling use of nonselective herbicides for weed management. Herbicide resistant trees could be used to improve productivity and reduce the costs of forest management through to the first and second years post tree establishment. We describe the introduction of the phosphinothricin acetyltransferase (bar...