Effects of barley yellow dwarf virus and environment on grain avenanthramide concentration in spring oat (Avena sativa L.)

Michels, Deanna Kay

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https://hdl.handle.net/2142/104774 Copy

Description

Title

Effects of barley yellow dwarf virus and environment on grain avenanthramide concentration in spring oat (Avena sativa L.)

Author(s)

Michels, Deanna Kay

Issue Date

2019-04-04

Director of Research (if dissertation) or Advisor (if thesis)

Kolb, Frederic L.

Committee Member(s)

• Juvik, John A.
• Mideros, Santiago X

Department of Study

Crop Sciences

Discipline

Crop Sciences

Degree Granting Institution

University of Illinois at Urbana-Champaign

Degree Name

M.S.

Degree Level

Thesis

Keyword(s)

Avenanthramides Barley Yellow Dwarf Heritability Oats

Abstract

The primary marketing strategy in the oat industry is to emphasize the health benefits that oats provide to a healthy human diet. Avenanthramides (AVNs) are a group of phytochemicals, which are unique to oats among cereal grains that provide health benefits through antioxidant activity among other biological activities. While approximately forty AVNs have been identified from oat extracts, three AVNs account for the majority of the total concentration. Those three AVNs are known as AVN 2p, AVN 2f, and AVN 2c and are the focus of this research. There is currently limited information on how avenanthramides interact with pathogens, the regional genotype-by-environment interactions of AVN concentration, and the heritability of AVN concentration. This study explored the relationship between Barley Yellow Dwarf Virus (BYDV) and avenanthramide concentration, as well as the genotype-by-environment interaction and heritability for avenanthramide concentrations in Illinois. One hundred genotypes were evaluated for BYDV tolerance and AVN concentration to investigate if a relationship exists between the two traits. Based on the data collected in 2017 and 2018, a significant correlation between BYDV tolerance and AVN concentration was not observed. Avenanthramide concentrations were quantified for the same 100 genotypes at three environments in two years to determine if environmental factors influence AVNs and if AVNs were heritable. The collected data, suggested that while year and environment had an influence on AVN concentrations, with the influence of year being more apparent than that of environment within a year, genotype had the largest impact on genotypic performance for the traits. When heritability was estimated the three major AVNs were found to be heritable.

Graduation Semester

2019-05

Type of Resource

text

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http://hdl.handle.net/2142/104774

Copyright and License Information

Copyright 2019 Deanna Michels

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