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Effects of TaPHS1 and TaMKK3-A Genes on Wheat Pre-Harvest Sprouting Resistance

Authors :
Meng Lin
Guorong Zhang
Shubing Liu
Guihua Bai
Source :
Agronomy, Vol 8, Iss 10, p 210 (2018), Agronomy, Volume 8, Issue 10
Publication Year :
2018
Publisher :
MDPI AG, 2018.

Abstract

Pre-harvest sprouting (PHS) constrains wheat production worldwide by reducing both wheat grain yield and end-use quality. TaPHS1 on wheat chromosome 3AS and TaMKK3-A on chromosome 4AL are two cloned genes with major effects on PHS resistance and they are independent from grain color (GC). In this study, we used marker-assisted backcrossing (MAB) to introgress TaPHS1 and TaMKK3-A from two PHS resistant sources&mdash<br />&lsquo<br />Tutoumai A&rsquo<br />and &lsquo<br />AUS1408&prime<br />&mdash<br />into a sprouting-susceptible white wheat line, NW97S186. Progeny were tested in four environments to investigate individual and combined effects of those two genes. TaPHS1 significantly reduced PHS and its effect on PHS varied with environments and gene sources. In contrast, the TaMKK3-A gene also significantly reduced PHS but its effectiveness was influenced by environments. The two genes had additive effects on PHS resistance, indicating pyramiding those two quantitative trait lici (QTLs) could increase PHS resistance. The additive effects were greater in a mild environment, such as a greenhouse, than in a dry and hot environment during maturation.

Details

Language :
English
ISSN :
20734395
Volume :
8
Issue :
10
Database :
OpenAIRE
Journal :
Agronomy
Accession number :
edsair.doi.dedup.....26941c51548e2e6f5cd5d0e900ce084f