The Journal of Heredity 1993:84(3):216-217
© 1993 The American Genetic Association 84:216-217
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Inheritance of Susceptibility to Nicosulfuron Herbicide in Maize
The Department of Agronomy, Louisiana Agricultural Experiment Station, Louisiana State University Agricultural Center Baton Rouge, LA 70803-2110
Abstract
Inheritance of susceptibility in maize (Zea mays L.) to Accent (active ingredient: nicosulfuron) {2-[[[[(4,6-dimethoxy-2-pyrimidinyl)amino]carbonyl]amino]sulfonyl]-N N-dimethyl- 3-pyridinecarboxamide}, an herbicide recommended for controlling Johnsongrass {Sorghum halepense (L.) Pers.) in maize, is reported here. Inbred Mp313E was susceptible and SC212M was resistant. Their F1 was resistant, and the F2 segregated 3 resistant : 1 susceptible (P = .99), indicating that susceptibility to nicosulfuron was conditioned by a single recessive gene, nsf. An F2 ratio of 3 resistant: 1 susceptible (P = .10-.05) from a cross between L668 (susceptible) and Mo17 (resistant) inbreds confirmed the above result. Of 223 public inbreds evaluated, 198 were resistant and 25 were susceptible.
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