MICRORNA POLYMORPHISMS CONFERRING ENHANCED DROUGHT TOLERANCE IN A PLANT

摘要

Methods of identifying a single nucleotide polymorphism associated with a plant trait and methods of identifying a plant having an improved trait. The plant trait is correlated with at least one single nucleotide polymorphism in a microRNA region of a plant genome. Isolated nucleic acids, transgenic plants, and methods of producing the same are also disclosed.

主权项

1. A method of producing a maize plant using marker-assisted breeding, wherein said maize plant confers increased grain yield at standard moisture percentage, the method comprising the steps of:
(a) crossing a first maize plant or a progeny thereof with a second maize plant, wherein said first maize plant or progeny thereof has been selected for said crossing based on the presence of at least one polymorphism within a marker locus of its genome, wherein said marker locus is associated with increased grain yield at standard moisture percentage and wherein said marker locus is SEQ ID NO: 69; (b) producing a progeny plant population from the cross of (a); (c) selecting a progeny plant from the progeny plant population of (b) based on genotyping the progeny plant's genomic DNA and selecting a progeny plant having at least one polymorphism within the marker locus of its genome, wherein said marker locus is associated with increased grain yield at standard moisture percentage and wherein said marker locus is SEQ ID NO: 69; and (d) producing a maize plant using marker-assisted breeding wherein said maize plant confers increased grain yield at standard moisture percentage.