Allelic variations of Vrn-1 and Ppd-1 genes in Japanese wheat varieties reveal the genotype-environment interaction for heading time.

IF 2 4区 农林科学 Q2 AGRONOMY Breeding Science Pub Date : 2022-12-01 Epub Date: 2022-12-06 DOI:10.1270/jsbbs.22017
Nobuyuki Mizuno, Hitoshi Matsunaka, Mikiko Yanaka, Masaru Nakata, Kazuhiro Nakamura, Akiko Nakamaru, Chikako Kiribuchi-Otobe, Goro Ishikawa, Makiko Chono, Koichi Hatta, Masaya Fujita, Fuminori Kobayashi
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Abstract

The timing of heading is largely affected by environmental conditions. In wheat, Vrn-1 and Ppd-1 have been identified as the major genes involved in vernalization requirement and photoperiod sensitivity, respectively. To compare the effects of Vrn-1 and Ppd-1 alleles on heading time under different environments, we genotyped Vrn-1 and Ppd-1 homoeologues and measured the heading time at Morioka, Tsukuba and Chikugo in Japan for two growing seasons. A total of 128 Japanese and six foreign varieties, classified into four populations based on the 519 genome-wide SNPs, were used for analysis. Varieties with the spring alleles (Vrn-D1a or Vrn-D1b) at the Vrn-D1 locus and insensitive allele (Hapl-I) at the Ppd-D1 locus were found in earlier heading varieties. The effects of Vrn-D1 and Ppd-D1 on heading time were stronger than those of the other Vrn-1 and Ppd-1 homoeologues. Analysis of variance revealed that heading time was significantly affected by the genotype-environment interactions. Some Vrn-1 and Ppd-1 alleles conferred earlier or later heading in specific environments, indicating that the effect of both alleles on the timing of heading depends on the environment. Information on Vrn-1 and Ppd-1 alleles, together with heading time in various environments, provide useful information for wheat breeding.

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日本小麦品种中 Vrn-1 和 Ppd-1 基因的等位基因变异揭示了打顶时间的基因型与环境之间的相互作用。
打顶时间在很大程度上受环境条件的影响。在小麦中,Vrn-1 和 Ppd-1 已被确定为分别参与春化要求和光周期敏感性的主要基因。为了比较 Vrn-1 和 Ppd-1 等位基因在不同环境下对打顶时间的影响,我们对 Vrn-1 和 Ppd-1 同源物进行了基因分型,并在日本盛冈、筑波和筑后进行了两个生长季的打顶时间测定。根据 519 个全基因组 SNPs,我们将 128 个日本品种和 6 个外国品种分为 4 个群体进行分析。在早熟品种中发现了在 Vrn-D1 基因座上具有春季等位基因(Vrn-D1a 或 Vrn-D1b)和在 Ppd-D1 基因座上具有不敏感等位基因(Hapl-I)的品种。Vrn-D1 和 Ppd-D1 对打顶时间的影响强于其他 Vrn-1 和 Ppd-1 同源物。方差分析显示,打顶时间受基因型-环境交互作用的影响很大。一些 Vrn-1 和 Ppd-1 等位基因在特定环境下会使打顶时间提前或推迟,这表明这两个等位基因对打顶时间的影响取决于环境。Vrn-1和Ppd-1等位基因的信息以及不同环境下的打顶时间为小麦育种提供了有用的信息。
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来源期刊
Breeding Science
Breeding Science 农林科学-农艺学
CiteScore
4.90
自引率
4.20%
发文量
37
审稿时长
1.5 months
期刊介绍: Breeding Science is published by the Japanese Society of Breeding. Breeding Science publishes research papers, notes and reviews related to breeding. Research Papers are standard original articles. Notes report new cultivars, breeding lines, germplasms, genetic stocks, mapping populations, database, software, and techniques significant and useful for breeding. Reviews summarize recent and historical events related breeding. Manuscripts should be submitted by corresponding author. Corresponding author must have obtained permission from all authors prior to submission. Correspondence, proofs, and charges of excess page and color figures should be handled by the corresponding author.
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