Multiple heat and drought events affect grain yield and accumulations of high molecular weight glutenin subunits and glutenin macropolymers in wheat
Multiple heat and drought events affect grain yield and accumulations of high molecular weight glutenin subunits and glutenin macropolymers in wheat
复制标题
多次高温和干旱事件影响小麦产量和高分子量麦谷蛋白亚基和麦谷蛋白大聚合物的积累
DOI：
10.1016/j.jcs.2012.10.010
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发表时间：
2013-01-01
影响因子：
3.8
通讯作者：
Jiang, Dong
中科院分区：
文献类型：
--
作者：
Zhang, Xiaxiang;Cai, Jian;Jiang, Dong
春小麦植株在小穗萌发期、花期或两期均遭受水分亏缺和/或高温。胁迫改变了籽粒的前期和成熟期，缩短了籽粒的干燥期，造成了籽粒产量的损失。在生育期早期受胁迫的植株，在花期再次发生胁迫时，籽粒产量高于未受早期胁迫的植株。籽粒高分子量谷蛋白亚基浓度在单早干旱、早干旱+晚热和双干旱胁迫下均上调，而在早干旱和双干旱胁迫下均下调。单次早旱、单次晚旱加热、单次早旱加热以及早旱加晚热胁迫均能提高麦胶蛋白的浓度，而早旱和双热胁迫均能降低麦胶蛋白的浓度。(c) 2012 Elsevier Ltd.版权所有。
Spring wheat plants were subjected to water deficit and/or high temperature episodes at spikelet initiation, anthesis or both stages. The stresses modified the early dough stage and maturity, shortened the kernel desiccation period and caused grain yield loss. Plants subjected to stress at the early growth stages had higher grain yields than the non-early-stressed plants when stress reoccurred at anthesis. Concentrations of high molecular weight glutenin subunits in grain were up-regulated by the single early drought, the early drought combined with late heat and the double drought stress treatments, but was down-regulated by the early heat and double heat stress events. Concentration of glutenin macropolymers was increased by the single early drought episode, the single late drought and heat events, as well as the early drought combined with the late heat stress, but was reduced by the early heat stress and double heat events. (c) 2012 Elsevier Ltd. All rights reserved.