Soybean plants with dominant selectable trait for herbicide resistance
AssigneeE. I. Du Pont de Nemours and Company
InventorScott A. Sebastian
Life of this patent
Estimating the term…
Abstract
The utilization of a positive selection seed screening process to isolate rate variants with resistance to a herbicide is described. The ability to screen large numbers of mutagenized seed has made it feasible to pursue and isolate plants with low frequency dominant herbicide-resistance mutations. The dominant herbicide resistance mutations are useful for many applications including expanding the utility of sulfonylurea herbicides for soybean weed control, production of F.sub.1 and F.sub.2 seeds, and as selectable markers for efficient seed purification.
Claims26
A soybean plant derived from mutation breeding containing at least one dominant mutation capable of being expressed in subsequent generations of said plant and conferring resistance to pre- and post-emergent application of a herbicidal compound having the Formula I ##STR10## wherein R is H or CH.sub.3 ;
- J is ##STR11## R`is Cl, Br, NO.sub.2, C.sub.1 -C.sub.4 alkyl, C.sub.2 -C.sub.4 alkyl, C.sub.2 -C.sub.4 alkenyl, CF.sub.3, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 haloalkoxy, C.sub.3 -C.sub.4 alkenyloxy, C.sub.2 -C.sub.4 haloalkenyloxy, C.sub.3 -C.sub.4 alkynyloxy, CO.sub.2 R.sub.9, CONR.sub.10 R.sub.11, S(O)mR.sub.12, OSO.sub.2 R.sub.12, phenyl, SO.sub.2 N(OCH.sub.3)CH.sub.3, SO.sub.2 NR.sub.10 R.sub.11, ##STR12## R.sub.2 is H, Cl, Br, F, CH.sub.3, NO.sub.2, SCH.sub.3, OCF.sub.2 H, OCH.sub.2 CF.sub.3 or OCH.sub.3 ;
- R.sub.3 is Cl, NO.sub.2, CO.sub.2 CH.sub.3, CO.sub.2 C.sub.2 H.sub.5, SO.sub.2 N(CH.sub.3).sub.2, SO.sub.2 CH.sub.3 or SO.sub.2 C.sub.2 H.sub.5 ;
- R.sub.4 is C.sub.1 -C.sub.3 alkyl, Cl, Br, NO.sub.2, CO.sub.2 R.sub.9, CON(CH.sub.3).sub.2, SO.sub.2 N(CH.sub.3).sub.2, SO.sub.2 N(OCH.sub.3)CH.sub.3 or S(O).sub.m R.sub.12 ;
- R.sub.5 is C.sub.1 -C.sub.3 alkyl, C.sub.4 -C.sub.5 cycloalkylcarbonyl, F, Cl, Br, NO.sub.2, CO.sub.2 R.sub.14, SO.sub.2 N(CH.sub.3 l).sub.2, SO.sub.2 R.sub.12 or phenyl;
- R.sub.6 is H, C.sub.1 -C.sub.3 alkyl, or CH.sub.2 CH.dbd.CH.sub.2 ;
- R.sub.7 is H, CH.sub.3, OCH.sub.3, Cl or Br;
- R.sub.8 is H, F, Cl, Br, CH.sub.3, OCH.sub.3, CF.sub.3, SCH.sub.3 or OCF.sub.2 H;
- R.sub.9 is C.sub.1 -C.sub.4 alkyl, C.sub.3 -C.sub.4 alkenyl or CH.sub.2 --CH.sub.2 Cl;
- R.sub.10 is H or C.sub.1 -C.sub.3 alkyl;
- R.sub.11 is H or C.sub.1 -C.sub.2 alkyl;
- R.sub.12 is C.sub.1 -C.sub.3 alkyl;
- R.sub.13 is H or CH.sub.3 ;
- R.sub.14 is C.sub.1 -C.sub.3 alkyl or CH.sub.2 CH.dbd.CH.sub.2 ;
- m is 0, 1 or 2;
- n is 1 or 2;
- Q is CH.sub.2, CHCH.sub.3 or NR.sub.15 ;
- R.sub.15 is H or C.sub.1 -C.sub.4 alkyl;
- R.sub.16 is H or CH.sub.3 ;
- R.sub.17 is C(O)NR.sub.18 R.sub.19, CF.sub.3, COOCH.sub.3 or SO.sub.2 CH.sub.2 CH.sub.3 ;
- R.sub.18 is H or CH.sub.3 ;
- R.sub.19 is CH.sub.3 ;
- R.sub.20 is H, Cl, F, Br, CH.sub.3, CF.sub.3, OCH.sub.3 or OCF.sub.2 H;
- R.sub.21 is H or CH.sub.3 ;
- X is CH.sub.3, OCH.sub.3, OC.sub.2 H.sub.5 or NHCH.sub.3 ;
- Y is CH.sub.3, C.sub.2 H.sub.5, OCH.sub.3, OC.sub.2 H.sub.5, OCF.sub.2 H, OCH.sub.2 CF.sub.3, Cl, CH.sub.2 OCH.sub.3 or cyclopropyl;
- Z is CH or N;
- and their agriculturally suitable salts;
- provided that
- a) when Y is Cl, then Z is CH and X is OCH.sub.3 ;
- b) when Y is OCF.sub.2 H, then Z is CH;
- c) when J is J-1 and R.sub.1 is OSO.sub.2 R.sub.12 or phenyl, then Y is other than OCF.sub.2 H;
- d) when JH is J-2, then Y is other than OCF.sub.2 H or OCH.sub.2 CF.sub.3 ;
- and
- (e) when J is J-3 and R.sub.4 is S(O).sub.m R.sub.12, then Y is other than OCH.sub.2 CF.sub.3
- said soybean plant being capable of normal trifoliolate development when germinated in and irrigated continuously with a chlorsulfuron solution having a concentration sufficient to prevent normal trifoliolate development of Williams 82 wild type soybean cultivar.
A soybean plant derived from mutation breeding containing at least one dominant mutation capable of being expressed in subsequent generations of said plant and conferring resistance to pre- and postemergent application of an herbicidal compound having the Formula II:
- ##STR15## wherein Ar is ##STR16## R.sub.a is C.sub.1 -C.sub.4 alkyl, F, Cl, Br, I, NO.sub.2, S(O).sub.p R.sub.d, COOR.sub.e or CF.sub.3 ;
- R.sub.b is H, F, Cl, Br, I, C.sub.1 -C.sub.4 alkyl, CF.sub.2 or COOR.sub.e ;
- R.sub.c is H, C.sub.1 -C.sub.4 alkyl, F, Cl, Br, I, CH.sub.2 OR.sub.d, CF.sub.2, phenyl, NO.sub.2 or COOR.sub.e ;
- R.sub.d is C.sub.1 -C.sub.4 alkyl;
- R.sub.e is C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkenyl, C.sub.1 -C.sub.4 alkynyl, or .sub.2 -ethoxyethyl;
- V is H, C.sub.1 -C.sub.3 alkyl, allyl, propargyl, benzyl or C.sub.1 -C.sub.3 alkylcarbonyl;
- X.sub.1, Y.sub.1, and Z.sub.1, are independently H, F, Cl, Br, I, C.sub.1 -C.sub.4 alkyl C.sub.1 -C.sub.2 alkylthio or C.sub.1 -C.sub.4 alkoxy;
- and
- p of 0, 1 or 2
- said soybean plant being capable of normal trifoliolate development when germinated in and irrigated continuously with a chlorsulfuron solution having a concentration sufficient to prevent normal trifoliolate development of Williams 82 wild type soybean cultivar.
A soybean plant derived from mutation breeding containing at least one dominant mutation capable of being expressed in subsequent generations of said plant and conferring resistance to pre- and postemergent application of a herbicidal compound having the Formula III:
- ##STR17## wherein A is ##STR18## R.sub.f is C.sub.1 -C.sub.4 alkyl;
- R.sub.g is C.sub.1 -C.sub.4 alkyl or C.sub.3 -C.sub.6 cycloalkyl;
- A.sub.1 is COOR.sub.i, CH.sub.2 OH or CHO;
- R.sub.i is H;
- C.sub.1 -C.sub.12 alkyl optionally substituted by C.sub.1 -C.sub.3 alkyl, C.sub.3 -C.sub.6 cycloalkyl or phenyl;
- C.sub.3 -C.sub.5 alkenyl optionally substituted by phenyl or 1-2 C.sub.1 -C.sub.3 alkyl, F, Cl, Br or I;
- or C.sub.3 -C.sub.5 alkynyl optionally substituted by phenyl or 1-2 C.sub.1 -C.sub.3 alkyl, F, Cl, Br or I;
- B is H. C(O)C.sub.1 -C.sub.6 alkyl or C(O)phenyl optionally substituted by Cl, NO.sub.2 or OCH.sub.3 ;
- X.sub.2 is H, F, Cl, Br, I, OH or CH.sub.3 ;
- Y.sub.2 and Z.sub.2 are independently H, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 alkoxy, F, Cl, Br, I, phenyl, NO.sub.2, CN, CF.sub.3 or SO.sub.2 CH.sub.3 ;
- or
- Y.sub.2 and Z.sub.2 together with the carbon atoms to which they are attached form a 5- or 6-membered saturated or unsaturated ring containing 1-3 heteroatoms selected from the group consisting of 0-2 oxygen, 0-2 sulfur and 0-3 nitrogen atoms;
- said ring may be unsubstituted or substituted on carbon or nitrogen wherein the substituents are selected from the group consisting of C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 haloalkyl, C.sub.3 -C.sub.6 alkenyl, C.sub.3 -C.sub.6 haloalkenyl, C.sub.3 -C.sub.4 alkynyl, C.sub.3 -C.sub.4 haloalkynyl, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 haloalkoxy, C.sub.1 -C.sub.4 alkoxycarbonyl, phenyl, C.sub.1 -C.sub.4 dialkylamino and C.sub.1 -C.sub.4 alkylsulfonyl;
- X.sub.3 is H, CH.sub.3, Cl or NO.sub.2 ;
- L is M, Q and R.sub.h are independently H, F, Cl, Br, I, CH.sub.3, OCH.sub.3, NO.sub.2, CF.sub.3, CN, N(CH.sub.3).sub.2, NH.sub.2, SCH.sub.3 or SO.sub.2 CH.sub.3 provided that only one of M or Q may be a substituent other than H,
- F, Cl, Br, I, CH.sub.3 or OCH.sub.3
- said soybean plant being capable of normal trifoliolate development when germinated in and irrigated continuously with a chlorsulfuron solution having a concentration sufficient to prevent normal trifoliolate development of Williams 82 wild type soybean cultivar.
Dependencies are inferred from the claim text.