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首页> 外文期刊>Breeding science >Molecular and genealogical analysis of grain dormancy in Japanese wheat varieties, with specific focus on MOTHER OF FT AND TFL1 on chromosome 3A
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Molecular and genealogical analysis of grain dormancy in Japanese wheat varieties, with specific focus on MOTHER OF FT AND TFL1 on chromosome 3A

机译：日本小麦品种休眠的分子和系谱分析，特别是3A染色体上的FT和TFL1的MOTHER OF

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摘要

In the wheat (Triticum aestivum L.) cultivar 'Zenkoujikomugi', a single nucleotide polymorphism (SNP) in the promoter of MOTHER OF FT AND TFL1 on chromosome 3A (MFT-3A) causes an increase in the level of gene expression, resulting in strong grain dormancy. We used a DNA marker to detect the 'Zenkoujikomugi'-type (Zen-type) SNP and examined the genotype of MFT-3A in Japanese wheat varieties, and we found that 169 of 324 varieties carry the Zen-type SNP. In Japanese commercial varieties, the frequency of the Zen-type SNP was remarkably high in the southern part of Japan, but low in the northern part. To examine the relationship between MFT-3A genotype and grain dormancy, we performed a germination assay in three wheat-growing seasons. On average, the varieties carrying the Zen-type SNP showed stronger grain dormancy than the varieties carrying the non-Zen-type SNP. Among commercial cultivars, 'Iwainodaichi' (Kyushu), 'Junreikomugi' (Kinki-Chugoku-Shikoku), 'Kinuhime' (Kanto-Tokai), 'Nebarigoshi' (Tohoku-Hokuriku), and 'Kitamoe' (Hokkaido) showed the strongest grain dormancy in each geographical group, and all these varieties, except for 'Kitamoe', were found to carry the Zen-type SNP. In recent years, the number of varieties carrying the Zen-type SNP has increased in the Tohoku-Hokuriku region, but not in the Hokkaido region.
机译：在小麦品种'Zenkoujikomugi'中，3A染色体（MFT-3A）的FT和TFL1的MOTHER的启动子中的单核苷酸多态性（SNP）导致基因表达水平的提高，导致谷物休眠能力强。我们使用DNA标记检测'Zenkoujikomugi'型（Zen型）SNP，并检查了日本小麦品种中MFT-3A的基因型，我们发现324个品种中有169个带有Zen型SNP。在日本商业品种中，Zen型SNP的频率在日本南部显着较高，而在北部则较低。为了检查MFT-3A基因型与谷物休眠之间的关系，我们在三个小麦生长季节进行了发芽试验。平均而言，携带Zen型SNP的品种比未携带Zen型SNP的品种表现出更强的休眠性。在商业品种中，“岩田大一”（九州），“准玲子”（近畿-四国-四国），“姬姬”（关东-东海），“根吉志”（东北-北陆）和“北茂”（北海道）表现最强每个地理区域的谷物休眠，所有这些品种（“ Kitamoe”除外）都携带有Zen型SNP。近年来，东北-北陆地区携带Zen型SNP的品种数量有所增加，而北海道地区则没有。

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