一个新的大麦（Hordeum vulgare L.）株高数量性状位点，对籽粒产量无负面影响。
A new QTL for plant height in barley (Hordeum vulgare L.) showing no negative effects on grain yield.
作者信息
Wang Junmei, Yang Jianming, Jia Qiaojun, Zhu Jinghuan, Shang Yi, Hua Wei, Zhou Meixue
机构信息
Institute of Crop and Nuclear Technology Utilization, Zhejiang Academy of Agricultural Sciences, Hangzhou, Zhejiang, PR China.
Tasmanian Institute of Agriculture and School of Land and Food, University of Tasmania, Kings Meadows, Tasmania, Australia.
出版信息
PLoS One. 2014 Feb 28;9(2):e90144. doi: 10.1371/journal.pone.0090144. eCollection 2014.
INTRODUCTION
Reducing plant height has played an important role in improving crop yields. The success of a breeding program relies on the source of dwarfing genes. For a dwarfing or semi-dwarfing gene to be successfully used in a breeding program, the gene should have minimal negative effects on yield and perform consistently in different environments.
METHODS
In this study, 182 doubled haploid lines, generated from a cross between TX9425 and Naso Nijo, were grown in six different environments to identify quantitative trait loci (QTL) controlling plant height and investigate QTL × environments interaction.
RESULTS
A QTL for plant was identified on 7H. This QTL showed no significant effects on other agronomic traits and yield components and consistently expressed in the six environments. A sufficient allelic effect makes it possible for this QTL to be successfully used in breeding programs.
引言
降低株高在提高作物产量方面发挥了重要作用。育种计划的成功依赖于矮化基因的来源。要使矮化或半矮化基因成功应用于育种计划，该基因应对产量的负面影响最小，并在不同环境中表现稳定。
方法
在本研究中，将由TX9425与Naso Nijo杂交产生的182个双单倍体系在六种不同环境中种植，以鉴定控制株高的数量性状位点（QTL）并研究QTL与环境的相互作用。
结果
在7H染色体上鉴定出一个控制株高的QTL。该QTL对其他农艺性状和产量构成因素无显著影响，并在六种环境中稳定表达。其足够的等位基因效应使得该QTL有可能成功应用于育种计划。
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