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ARS Home » Midwest Area » Madison, Wisconsin » Vegetable Crops Research » Research » Research Project #434439

Research Project: Trait Discovery, Genetics, and Enhancement of Allium, Cucumis, and Daucus Germplasm

Location: Vegetable Crops Research

Project Number: 5090-21000-069-00-D
Project Type: In-House Appropriated

Start Date: Mar 12, 2018
End Date: Mar 11, 2023

Objective:
Objective 1: Phenotype, map, and identify traits of critical importance for vegetable growers, seed companies, and consumers in elite populations and in diverse genetic resources of Allium, Cucumis, and Daucus. Objective 2: Develop and release enhanced germplasm of Allium, Cucumis, and Daucus with superior traits. Objective 3: Determine the genetic bases and molecular processes for biotic and abiotic resistance, growth and productivity, nutritional value, and flavor characteristics in Allium, Cucumis, and Daucus. Objective 4: Develop informational resources and tools to evaluate phenotypic and genotypic data from Allium, Cucumis, and Daucus breeding and genetic research.

Approach:
The long-term potential for improving a crop is only as great as the breadth of diversity that breeders utilize. Objective 1: Identify unique phenotypic variation in carrot, onion, and cucumber germplasm collections and breeding stocks and genetically map key traits to improve nutritional and processing quality, disease resistance, stress tolerance, and yield of Allium, Cucumis, and Daucus vegetables, characterize observed variation and initiate genetic incorporation of these phenotypes into elite germplasm. Objective 2: Incorporate valuable traits and release elite germplasm and genetic stocks using marker-assisted selection and provide stakeholders with germplasm and databases including maps. Dense genetic maps are useful to improve the efficiency of crop improvement. We will identify unique phenotypes in elite onion, cucumber, and carrot germplasm to construct genetic maps for marker-facilitated selection of major horticultural traits. Objective 3: Develop populations to determine the patterns of inheritance of unique phenotypic variation and develop molecular markers for traits in germplasm collections and breeding stocks to improve nutritional and processing quality, disease resistance, stress tolerance, and yield of Allium, Cucumis, and Daucus vegetables, phenotype observed variation among individuals in populations, and develop genetic models to explain observed genetic patterns. Information on trait genetics from germplasm evaluation and genetic analysis is useful and sets the stage for developing genetic and breeding stocks, and for establishing information resources for stakeholders. Objective 4: Summarize and catalog phenotypic, genotypic, and molecular data collected and develop accessible and searchable databases.