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Discovery of a Primisulfuron-Resistant Shattercane (Sorghum bicolor) Biotype

Published online by Cambridge University Press:  12 June 2017

Daniel D. Anderson ,
Fred W. Roeth  and
Alex R. Martin
Daniel D. Anderson
Affiliation:
Department of Agronomy, University of Nebraska, Lincoln, NE 68583–0915
Fred W. Roeth
Affiliation:
Department of Agronomy, University of Nebraska, Lincoln, NE 68583–0915
Alex R. Martin
Affiliation:
Department of Agronomy, University of Nebraska, Lincoln, NE 68583–0915
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Abstract

Shattercane seeds were collected in 1992 from 16 fields in southeastern and south-central Nebraska that had been treated for 3 consecutive yr with primisulfuron or nicosulfuron. Approximately 11,200 plants, from a total of 16,000 seeds (1,000 per field) planted, were evaluated for primisulfuron resistance in greenhouse screening. A single resistant plant was found. No other primisulfuron resistance was found in evaluating an additional 1,718 plants from the remaining seeds collected in 1992 from the field where the original resistant plant was found. Shattercane seeds were collected in 1993 and 1994 from that field. All 17,038 plants from these collections were killed by primisulfuron. A field assessment of 118 descendents of the original resistant plant (S1 progeny) produced three responses to primisulfuron at an approximate 1:2:1 ratio: (1) death; (2) some interveinal chlorosis; or (3) no visible injury or symptoms. Discovery of this resistant shattercane biotype indicates the potential for selection of primisulfuron-resistant shattercane populations under field conditions.

Keywords

Nicosulfuron, 2-[[[[(4,6-dimethoxy-2-pyrimidinyl)amino]carbonyl]amino]sulfonyl]-N,N-dimethyl-3-pyridinecarboxamideprimisulfuron, 2-[[[[[4,6-bis(difluoromethoxy)-2-pyrimidinyl]amino]carbonyl]amino]sulfonyl]benzoic acidshattercane, Sorghum bicolor (L.) Moench # SORVUcorn, Zea mays L.Herbicide resistanceZea maysSORVUALS, acetolactate synthase (EC 4.1.3.18)COC, crop oil concentrateDAT, days after treatmentRH, relative humidityRox, forage sorghumS0, original plantS1, progeny of S0S2, progeny of S1
Type
Research
Information
Weed Technology , Volume 12 , Issue 1 , March 1998 , pp. 74 - 77
Copyright
Copyright © 1997 by the Weed Science Society of America 

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References

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