Genome-wide Association Analysis of Tassel Length in Maize
PAN Shunxiang1,3, ZHAO Meiai1,3, PEI Yuhe2,3, GUO Xinmei2,3, SONG Xiyun2,3
1. College of Life Science, Qingdao Agricultural University, Qingdao 266109, China;
2. College of Agronomy and Plant Protection, Qingdao Agricultural University, Qingdao 266109, China;
3. Qingdao Agricultural University, Qingdao Key Lab of Germplasm Innovation and Application of Major Crops, Qingdao 266109, China
Abstract：In order to explain the genetic basis of tassel length and locate the related QTLs,289 maize inbred lines were used as the experimental material,the correlation between the tassel length of maize and plant height,ear height,tassel stem length were measured and analyzed under natural conditions,and genome association analysis was also applied to initially map the length of tassel. The results showed that tassel length and the three agronomic traits were significantly or extremely significantly correlated,therein,tassel length had the most significant correlation with tassel stem length,and the highest correlation coefficient has reached 0.717.At the same time,a total of 13 marker sites correlated with tassel length were identified and they were located on Bin1.05,Bin7.02,Bin8.03 and Bin10.05. Genome-wide association analysis was used to explore the long locus and candidate genes,which had an important significance to reveal the genetic mechanism of tassel and accelerate the process of maize breeding.
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2017, Vol. 32 
