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ARS Home » Plains Area » Manhattan, Kansas » Center for Grain and Animal Health Research » Hard Winter Wheat Genetics Research » Research » Research Project #432918

Research Project: Advancing Harvest Index in Wheat Through Genomic Enabled Physiological Breeding

Location: Hard Winter Wheat Genetics Research

Project Number: 3020-21000-010-39-R
Project Type: Reimbursable Cooperative Agreement

Start Date: Dec 1, 2016
End Date: Nov 30, 2017

Objective:
Overall hypothesis or goal: to develop an ideal ideotype with HI = 0.60 by combining increased spike partitioning, fruiting efficiency, fertile florets per spikelet, and improved spike morphology. The specific objectives are: 1. develop new breeder-friendly molecular markers for grain partitioning traits that permit photosynthetic products to be consistently translated to grain yield, 2. screen genetic resources to determine grain partitioning in high biomass backgrounds, 3. identify mechanisms determining grain partitioning traits, 4. design ideal plant ideotypes for high HI and yield.

Approach:
1) genotyping two association panels using GBS-SNP markers, and identify significant SNPs that associated with harvest index related traits in the panels. 2) validating the SNPs identified in association study in four bi-parental populations after converting them into KASP-SNPs 3) screening wider resources for using the SNP marker to identify ideal materials for breeding application.