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 Corn Insects and Crop Genetics Research: Ames, IA
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ARS Home Midwest Area Ames, Iowa Corn Insects and Crop Genetics Research Research





- Scott, Marvin
- Plant Genetic Resources, Genomics and Genetic Improvement (301)

Research Project: **Location:
                            Corn Insects and Crop Genetics Research** Project Number: 5030-21000-073-025-R
                        
                        Project Type: Reimbursable Cooperative Agreement Start Date: Sep 1, 2021
                        
                        End Date: Aug 31, 2025 **Objective:**
                        
                        The objective of this proposal is to develop a method for breeding corn varieties more rapidly  by combining major genes with an organic-friendly doubled haploid method. **Approach:**
                        
                        We will develop molecular markers for the major genes by examining the DNA sequences in the genotypes of interest.  Polymorphic sites will be used to construct SNP markers specific for each allele. Major genes will be combined by crossing as usual, except the F1 plants will be used to make haploid plants which will be screened with molecular markers to identify individuals containing the desired allele combinations.  Screening haploid plants is much more efficient than screening diploid plants because the number of individuals requiring evaluation in haploids is the square root of the number of individuals requiring evaluation in diploids.  The desired individuals will be used to produce doubled haploid lines that can be used in the next cycle of breeding.


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