2021
Screening for stem borer resistance
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Contributor/Checkoff:
Nebraska Soybean Board
Category:
Sustainable Production
Keywords:
GeneticsGenomics
Parent Project:
Screening for stem borer resistance
Lead Principal Investigator:
David Hyten, University of Nebraska at Lincoln
Co-Principal Investigators:
Project Code:
1744
Contributing Organization (Checkoff):
Nebraska Soybean Board
$57,572
Institution Funded:
University of Nebraska at Lincoln
$57,572
Brief Project Summary:
This project will provide an initial screening of diverse germplasm for resistance to stem borer found in Nebraska. We will do a large-scale screen of diverse germplasm to assess stem breakage, girdling, and oviposition punctures due to Dectes stem borer infestation. To assess antixenosis and antibiosis we will do a more labor-intensive screening on a smaller number of lines that maximize genetic diversity or have demonstrated potential resistance through the large-scale screen. Through these screens, we will identify the best methods to screen for genetic resistance to help us design genetic studies to map and discover resistant genes. We will also identify germplasm that has potential...
Unique Keywords:
#breeding & genetics
Information And Results
Project Summary

This project will provide an initial screening of diverse germplasm for resistance to stem borer found in Nebraska. We will do a large-scale screen of diverse germplasm to assess stem breakage, girdling, and oviposition punctures due to Dectes stem borer infestation. To assess antixenosis and antibiosis we will do a more labor-intensive screening on a smaller number of lines that maximize genetic diversity or have demonstrated potential resistance through the large-scale screen. Through these screens, we will identify the best methods to screen for genetic resistance to help us design genetic studies to map and discover resistant genes. We will also identify germplasm that has potential resistance that can be used in breeding to improve current cultivars. This germplasm will be used in further genetic studies to better understand the mechanisms of antixenosis and antibiosis resistance.

Project Objectives

This research project's main objective is to understand the potential of genetic resistance to soybean stem borer.
Objective 1: Screen diverse germplasm for resistance to stem breakage and girdling due to soybean stem borer infestation
Objective 2: Assess antixenosis and antibiosis resistance in diverse soybean lines

Project Deliverables

There is minimal work that has been done on screening for resistance to Dectes stem borer. This project will identify new sources of resistance. These sources will be used to create the resources need to map genetic resistance and to incorporate it into elite germplasm.

Progress Of Work

Final Project Results

Updated May 19, 2023:

View uploaded report PDF file

Benefit To Soybean Farmers

The amount of potential genetic resistance soybean has to stem borer is unknown. There has been little work done to screen for soybean stem borer resistance. This two-year project will provide preliminary data that is essential for setting up future studies to identify resistance germplasm that can be used to breed for resistance and to discover genes that can be combined to increase resistance.

The primary deliverable is to provide an initial screening of diverse soybean germplasm for resistance to soybean stem borer in Nebraska. This initial screening will help us to identify the best methods to screen for genetic resistance. It will also identify soybean plant introductions that demonstrate resistance in the initial screening that can be followed up in a project set up to perform more extensive screening to confirm if they are resistant.

The United Soybean Research Retention policy will display final reports with the project once completed but working files will be purged after three years. And financial information after seven years. All pertinent information is in the final report or if you want more information, please contact the project lead at your state soybean organization or principal investigator listed on the project.