Title

Evaluation of Root System Architecture (RSA) of Oat (Avena sativa L.) Genotypes

Presentation Type

Poster

Student

Yes

Track

Precision Ag/Biological Sciences Application

Abstract

Root systems play an essential role in plant by allowing the plant to absorb water and nutrient from the soil. Root system architecture (RSA) describes the spatial arrangement of a root system in the soil, the overall shape and structure of the root system. The objective of this study was to evaluate and compare the root system architecture of a set of 12 oat genotypes. Oat seed were planted in plastic pots filled with 1:1 mixture of garden soil and sand. The experiment was conducted in the greenhouse with a photoperiod of 16 hours of light and a temperature between 21 and 24oC. The experiment followed a randomized complete block design with 4 replications. Thirty-five days after planting, the roots were removed from the pots, cleaned and photographed. Fifteen root traits were evaluated form each of the image using an online tool, Digital Imaging of Root Traits (DIRT). Significant differences among genotypes were observed for various root traits including projected root area, average root density, root tip count, accumulated width over 10% and 50% depth. Ideal root traits include roots with increased depth of root system, increased deep branching, steep root angle, small root diameter and higher root surface area, as it helps with the nutrient and water absorption from wider and deeper soil profile. Genotypes like Hayden, SD120665, Horsepower and Natty showed desirable root traits and these can be used as genetic resources to develop roots with deeper distribution which has been associated with increased yield potential.

Start Date

5-2-2019 12:00 PM

End Date

5-2-2019 1:00 PM

This document is currently not available here.

Share

COinS
 
Feb 5th, 12:00 PM Feb 5th, 1:00 PM

Evaluation of Root System Architecture (RSA) of Oat (Avena sativa L.) Genotypes

Volstorff A

Root systems play an essential role in plant by allowing the plant to absorb water and nutrient from the soil. Root system architecture (RSA) describes the spatial arrangement of a root system in the soil, the overall shape and structure of the root system. The objective of this study was to evaluate and compare the root system architecture of a set of 12 oat genotypes. Oat seed were planted in plastic pots filled with 1:1 mixture of garden soil and sand. The experiment was conducted in the greenhouse with a photoperiod of 16 hours of light and a temperature between 21 and 24oC. The experiment followed a randomized complete block design with 4 replications. Thirty-five days after planting, the roots were removed from the pots, cleaned and photographed. Fifteen root traits were evaluated form each of the image using an online tool, Digital Imaging of Root Traits (DIRT). Significant differences among genotypes were observed for various root traits including projected root area, average root density, root tip count, accumulated width over 10% and 50% depth. Ideal root traits include roots with increased depth of root system, increased deep branching, steep root angle, small root diameter and higher root surface area, as it helps with the nutrient and water absorption from wider and deeper soil profile. Genotypes like Hayden, SD120665, Horsepower and Natty showed desirable root traits and these can be used as genetic resources to develop roots with deeper distribution which has been associated with increased yield potential.