Sato Kazuhiro, Ishii Makoto, Takahagi Kotaro, Inoue Komaki, Shimizu Minami, Uehara-Yamaguchi Yukiko, Nishii Ryuei, Mochida Keiichi
Institute of Plant Science and Resources, Okayama University, Kurashiki 710-0046, Japan.
Institute of Plant Science and Resources, Okayama University, Kurashiki 710-0046, Japan.
iScience. 2020 Jun 26;23(6):101146. doi: 10.1016/j.isci.2020.101146. Epub 2020 May 11.
Heading time is a key trait in cereals affecting the maturation period for optimal grain filling before harvest. Here, we aimed to understand the factors controlling heading time in barley (Hordeum vulgare). We characterized a set of 274 barley accessions collected worldwide by planting them for 20 seasons under different environmental conditions at the same location in Kurashiki, Japan. We examined interactions among accessions, known genetic factors, and an environmental factor to determine the factors controlling heading response. Locally adapted accessions have been selected for genetic factors that stabilize heading responses appropriate for barley cultivation, and these accessions show stable heading responses even under varying environmental conditions. We identified vernalization requirement and PPD-H1 haplotype as major stabilizing mechanisms of the heading response for regional adaptation in Kurashiki.
抽穗期是谷类作物的一个关键性状，它影响着收获前实现最佳籽粒灌浆的成熟期。在此，我们旨在了解控制大麦（Hordeum vulgare）抽穗期的因素。我们对一组全球收集的274份大麦种质进行了特征分析，将它们在日本仓敷同一地点的不同环境条件下种植了20季。我们研究了种质、已知遗传因素和环境因素之间的相互作用，以确定控制抽穗反应的因素。当地适应的种质已被选择具有稳定抽穗反应的遗传因素，这些因素适合大麦种植，并且即使在不同的环境条件下，这些种质也表现出稳定的抽穗反应。我们确定春化需求和PPD-H1单倍型是仓敷地区适应性抽穗反应的主要稳定机制。
