Analysis on the Genetic Basis of New Wheat Varieties Zhengmai16,Zhengmai20 and Zhengmai22
In order to analyze the molecular genetic basis of wheat(Triticum aestivum L.)varieties Zhengmai16,Zhengmai20,the Zhengmai22,Zhengmai16,Zhengmai20 and Zhengmai22 and their parents were analyzed using wheat 55K SNP microarray and functional gene markers.The results showed that Zhengmai16 and Zhengmai22 were closely related to Zhoumai22 and Zhoumai16,respec-tively,and Zhengmai20 was closely related to Zhoumai18.The Zhoumai16,Zhoumai18 and Zhoumai22 were 78.97％,64.99％and 88.83％of the same genotypes as Zhengmai16,Zhengmai20 and Zhengmai22,respectively,and the corresponding genetic contribution rates were the highest,which were 46.60％,43.08％and 60.96％,respectively.Further analysis of 21 chromosomes showed that 1B,1D,2D,3A,3D,4B,4D,5A,5B,5D,6A,6D,7B and 7D on chromosomes of Zhoumai16,Zhoumai18 and Zhoumai22 contributed the most to the parents.On chromosome 2A,the genotypes of Yanzhan4110 and Zhengmai16,Yanzhan4110 and Zhengmai20,Aikang58 and Zheng-mai22 were 70.6％,80.4％and 78.0％,respectively,suggesting that the genes related to widespread early maturity on chromosome 2A were selected and utilized.The results of functional marker detec-tion showed that Zhengmai16 and Zhengmai22 polymerized Yr5,Yr30,QYr.nwafu-4BL,QYrqin.nwafu-2AL and Lr13,and Zhengmai22 carried Phs1 gene and had good sprouting resistance.
万方数据
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