Journal Article

FZJ-2021-04749

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Variation in Root System Architecture among the Founder Parents of Two 8-way MAGIC Wheat Populations for Selection in Breeding

Pariyar, S. R. (Corresponding author)FZJ* ; Nagel, K. A. (Corresponding author)FZJ* ; Lentz, J.FZJ* ; Galinski, A.FZJ* ; Wilhelm, J.FZJ* ; Putz, A.FZJ* ; Adels, S.FZJ* ; Heinz, K. ; Frohberg, C. ; Watt, M.

2021
MDPI Basel

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Please use a persistent id in citations: http://hdl.handle.net/2128/29653  doi:10.3390/agronomy11122452

Abstract: Root system architecture (RSA) is a target for breeding crops with effective nutrient and water use. Breeding can use populations designed to map quantitative trait loci (QTL). Here we non-invasively phenotype roots and leaves of the 16 foundation parents of two multi-parent advanced generation inter-cross (MAGIC) populations, covering diversity in spring (CSIRO MAGIC) and winter (NIAB MAGIC) wheats. RSA components varied after 16 days in the upgraded, paper-based imaging platform, GrowScreen-PaGe: lateral root length 2.2 fold; total root length, 1.9 fold; and seminal root angle 1.2 fold. RSA components total and lateral root length had the highest root heritabilities (H2) (H2 = 0.4 for CSIRO and NIAB parents) and good repeatability (r = 0.7) in the GrowScreen-PaGe. These can be combined with leaf length (H2 = 0.8 CSIRO; 0.7 NIAB) and number (H2 = 0.6 CSIRO; 0.7 NIAB) to identify root and shoot QTL to breed for wheats with vigorous RSA and shoot growth at establishment, a critical phase for crop productivity. Time resolved phenotyping of MAGIC wheats also revealed parents to cross in future for growth rate traits (fastest: Robigus–NIAB and AC Barrie–CSIRO; slowest Rialto–NIAB and G204 Xiaoyan54–CSIRO) and root: shoot allocation traits (fast growers grew roots, notably laterals, quicker than leaves, compared to slow growers).

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Contributing Institute(s):

1. Pflanzenwissenschaften (IBG-2)

Research Program(s):

1. 2171 - Biological and environmental resources for sustainable use (POF4-217) (POF4-217)
2. Pflanzenzüchtungsforschung-Verbundvorhaben: 'Verbesserung quantitativer Merkmale durch Erschließung genomischer und funktionaler Diversität aus Mais Landrassen (MAZE) - Teilprojekt G' (031B0195G) (031B0195G)

Appears in the scientific report 2021

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