this invention by expressing the unique combination of characteristics of fm 991b2r including the insect resistance and herbicide resistance of fm 991b2r except for one two three four or five characteristics being different from the characteristics of fm 991b2r as a result of the act of derivation another embodiment of this invention is the reproduction of plants of fm 991b2r by the method of tissue culture from any regenerable plant tissue obtained from plants of this invention plants reproduced by this method express the specific combination of characteristics of this invention and fall within its scope during one of the steps of the reproduction process via tissue culture somaclonal variant plants may occur which plants can be selected as being distinct from this invention but still fall within the scope of this invention as being essentially derived from this invention another embodiment of this invention is the production of a hybrid variety comprising repeatedly crossing plants of fm 991b2r with plants of a different variety or varieties or with plants of a non released line or lines in practice three different types of hybrid varieties may be produced see e g chapter 18 u201c hybrid varieties u201d in briggs and knowles supra the u201c single cross hybrid u201d produced by.