国审小麦品种“小偃22”两个姊妹系的差异分析

Diversity Analysis on the Two Sister Lines of Wheat Variety Xiaoyan22

国审小麦新品种小偃22有两个姊妹系小偃22-2和小偃22-3,两个系在农艺性状多方面比较相似,皆具有多穗多粒、结实性突出、品质优良、增产潜力大、抗逆性强、适应性广等突出优点,是陕西省第六次更新换代骨干品种。为了有效鉴别和利用这2个姊妹系,本文从农艺性状、蛋白电泳、SSR等方面系统分析了两个系的差异,总结了两者农艺性状的异同点,找到了区分2个姊妹系SDS-PAGE和A-PAGE图谱的特征带,筛选出了25对区分这2个姊妹系分子差异的SSR特异引物。

The new wheat variety Xiaoyan22, which was approve by Shaanxi province and by nation, has two sister lines whose names are Xiaoyan22-2 and Xiaoyan22-3. The two sister lines are very similar in their agronomy properties, and possess many outstanding advantages, such as： Poly-spike and poly-grain, good fructification, high quality, high yield, strong resistance and wide adaptability etc. In addition they have been the most primer wheat variety planting in Shannxi province since 2000. This paper analyze systematically the difference of the two sister lines of wheat variety Xiaoyan22 by studying on agronomy properties, SDS-PAGE and A-PAGE, and SSR etc. The results were as follows： The similarities and differences of agronomy properties between the two sister lines are summarized, and both the characteristics bands form SDS-PAGE and A-PAGE patterns and 25 pairs peculiar primers form SSR to differentiate the two sister lines are all found out.