黄色素含量基因在黑龙江省小麦品种中的分布

Distribution of Genes Associated with Yellow Pigment Content in Heilongjiang Wheat Cultivars

面粉及其制品的色泽是衡量小麦品质的一项重要指标,并且随着人们生活水平的提高而受到越来越多的重视。为了解黑龙江省小麦品种Psy-A1位点上控制黄色素含量的等位基因分布状况,本研究利用功能标记YP7A对95份推广品种的Psy-A1位点等位变异进行了检测。结果表明,在Psy-A1位点控制低黄色素含量的等位基因Psy-A1b的材料在黑龙江省小麦中的分布频率为58.9%,而控制高黄色素含量的等位基因Psy-A1a的材料在黑龙江省小麦中的分布频率为41.1%,说明黑龙江省小麦品种Psy-A1位点以Psy-A1b为主。但从单个品种上看,当前黑龙江省主栽小麦品种及骨干亲本却大多以高黄色素含量的等位基因Psy-A1a为主,如龙麦26、龙麦30、龙辐麦12、龙辐麦16、克旱18、克旱19、克旱20等。而克丰6号、克丰10号、克丰12及龙辐麦15为低黄色素含量的等位基因Psy-A1b类型。

Colour is an important trait, exerting significant influences on the apparence of wheat-based products. In the present study,a total of 95 cultivars,collected from Heilongjiang province,were used to identify the allelic variation at Psy-A1 loci. The results showed that both of the genotypes associated with higher and lower PPO activity were found, the proportion of the allelic variations at Psy-A 1 loci controlling high and low YP content were 41. 1% and 58.9 %, respectively. However, most representive cultivars backbone parents, such as longmai 26,longmai 30, longfumai 12, longfumai 16, kehan 18, kehan 19, and kehan 20, present Psy-A 1 a controlling high YP content, it may due to the lack of selective pressure.