首页|Comparative mapping of QTLs for H+ secretion of root in maize (Zea mays L.) and cross phosphorus levels on two growth stages
Comparative mapping of QTLs for H+ secretion of root in maize (Zea mays L.) and cross phosphorus levels on two growth stages
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NETL
NSTL
万方数据
H+ is a root secretion that affects P acquisition and P-use efficiency (PUE) under deficient phosphorus in maize.The secretion of H+,difference value of H+ between deficient and normal phosphorus (DH),and relative H+ (RH) as well as the quantitative trait loci (QTLs) associated with these traits were determined for a F2∶3 population derived from the cross of two contrasting maize (Zea mays L.) genotypes,082 and Ye107.By using composite interval mapping (CIM),a total of 14,8,and 9 distinct QTLs were identified for H+,DH,and RH,respectively.Most loci of QTLs for traits H+,DH,and RH had different cross environments.It showed that H+ secretion possessed an environment-sensitive and multi-gene nature.The gene × environment interaction was actually reflected by H+ secretion.One region for QTL of trait H+ was detected at the interval of bnlg2228-bnlg100 (bin 1.08) on chromosome 1.Coincident QTLs in the important genomic region reflected the cross phosphorus levels,different cross growth stages,and two different cross environments.The QTL explained 10％ to 14％ total phenotypic variance of H+.Therefore,the above segment (bnlg2228-bnlg100) (bin 1.08) identified on chromosome 1 may be used in the future for MAS to improve the phosphorus efficiency in maize.
maizeQTL analysisH+difference value of H+relative H+
Junyi CHEN、Li XU
展开 >
Institute of Medical Biotechnology in Chongqing/lnstitute of Chinese Medicine in Chongqing, Chongqing Medical and Pharmaceutical College, Chongqing 401331, China
This research was funded by the Chongqing Key Scientific and Technological ProjectChinese Key Scientific And Technological Project
NETL
NSTL
万方数据
