Journal article

High-resolution mapping of rachis nodes per rachis, a critical determinant of grain yield components in wheat.

Kai P Voss-Fels, Gabriel Keeble-Gagnère, Lee T Hickey, Josquin Tibbits, Sergej Nagornyy, Matthew J Hayden, Raj K Pasam, Surya Kant, Wolfgang Friedt, Rod J Snowdon, Rudi Appels, Benjamin Wittkop

Theoretical and Applied Genetics | Published : 2019

Abstract

KEY MESSAGE: Exploring large genomic data sets based on the latest reference genome assembly identifies the rice ortholog APO1 as a key candidate gene for number of rachis nodes per spike in wheat. Increasing grain yield in wheat is a key breeding objective worldwide. Several component traits contribute to grain yield with spike attributes being among the most important. In this study, we performed a genome-wide association analysis for 12 grain yield and component traits measured in field trials with contrasting agrochemical input levels in a panel of 220 hexaploid winter wheats. A highly significant, environmentally consistent QTL was detected for number of rachis nodes per rachis (NRN) on..

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