Department of Plant Science, Rothamsted Research , Harpenden, Hertfordshire AL5 2JQ, United Kingdom.
J Agric Food Chem. 2011 Oct 12;59(19):10564-71. doi: 10.1021/jf202762b. Epub 2011 Sep 19.
The total contents of thiamine (vitamin B1), riboflavin (B2), and pyridoxine (B6) and the bioavailable forms of niacin (B3) were determined on wholemeal flours of 24 winter wheat varieties grown on four sites (United Kingdom, Poland, France, and Hungary) in 2007 and of two spring varieties grown on the same sites with the exception of Poland. The contents of vitamins B1 (5.53-13.55 μg/g dw), B2 (0.77-1.40 μg/g dw), and B6 (1.27-2.97 μg/g dw) were within the ranges reported previously, while the content of bioavailable vitamin B3 (0.16-1.74 μg/g dw) was about 10-15% of the total contents of vitamin B3 reported in previous studies. Strong correlations were observed between the contents of vitamins B1, B3, and B6, and partitioning of the variance in the contents of these three B vitamins showed that between 48 and 70% was accounted for by the environment. By contrast, the content of vitamin B2 was not correlated with the contents of other B vitamins, and 73% of the variance was ascribed to the error term, which suggests that this trait may be influenced by genotype × environment interactions. Whereas the contents of vitamins B1, B3, and B6 were correlated positively with the mean temperature from heading to harvest (r > 0.8), the content of vitamin B2 was positively correlated with precipitation during the 3 months prior to heading. These results are discussed in relation to the development of new wheat varieties with enhanced health benefits.
2007 年，在英国、波兰、法国和匈牙利的四个试验点种植了 24 个冬小麦品种和两个春小麦品种（除了波兰之外，其余试验点均种植了这两个春小麦品种），我们对这些小麦品种的全麦粉进行了硫胺素（维生素 B1）、核黄素（B2）和吡哆醇（B6）总量以及烟酸（B3）生物可利用形式的测定。维生素 B1（5.53-13.55μg/g dw）、B2（0.77-1.40μg/g dw）和 B6（1.27-2.97μg/g dw）的含量处于之前报道的范围内，而生物可利用的维生素 B3（0.16-1.74μg/g dw）的含量约为之前研究报道的维生素 B3 总量的 10-15%。维生素 B1、B3 和 B6 的含量之间存在很强的相关性，这些三种 B 族维生素含量的方差分配表明，其中 48-70%由环境决定。相比之下，维生素 B2 的含量与其他 B 族维生素的含量无关，73%的方差归因于误差项，这表明该性状可能受到基因型×环境互作的影响。而维生素 B1、B3 和 B6 的含量与抽穗至收获期间的平均温度呈正相关（r＞0.8），维生素 B2 的含量与抽穗前 3 个月的降水呈正相关。这些结果与开发具有增强健康效益的新型小麦品种进行了讨论。
