SULFONYLUREA-TOLERANT SUNFLOWER PLANTS

摘要

This invention relates to sunflower lines and hybrids tolerant to sulfonylurea herbicides wherein the tolerance trait is obtained using induced mutagenesis and artificial selection, and to a method for selectively controlling undesired vegetation, including parasitic weeds, by applying sulfonylurea herbicides to sulfonylurea-tolerant sunflower crops.

主权项

1. A method for producing a sunflower line containing a highly heritable trait conferring tolerance to sulfonylurea herbicides, wherein the method comprises:
(a) treating sunflower seeds with a mutagenic agent; (b) growing the treated seeds into mature plants to produce second-generation seeds; (c) harvesting the second-generation seeds; (d) germinating the second-generation seeds in the presence of an selectably effective amount of a sulfonylurea herbicide to select for survival only germinated seeds containing a trait conferring tolerance to the sulfonylurea herbicide; and (e) growing a surviving germinated seed into a mature plant to produce through self-pollination seeds of the sunflower line containing the heritable trait.