Cai C.,Hubei Academy of Tobacco Science and Research |
Deng H.,Wuhan Regional Climate Center |
Feng J.,Hubei Academy of Tobacco Science and Research |
Cheng L.,Hubei Academy of Tobacco Science and Research |
And 2 more authors.
Acta Tabacaria Sinica | Year: 2014
A genetic linkage map was built based on one DH population derived from one F1 in order to understand genetic control of growth period traits including days to flower (df) and number of productive leaves (npl) in flue-cured tobacco. The F1 was obtained by crossing early-flowering cultivar K326 with late-flowering cultivar Xingyan No. 1.The map was composed of 23 AFLP, one SRAP and 136 SSR molecular markers assembled into 23 linkage groups (LG1-LG23) with a total genetic distance of 1814.1 cM. Composite interval mapping (CIM) was used to detect QTLs involved in df and npl. Results showed that a total of three main-effect QTLs were detected, of which two(df1 in LG1 and df2 in LG11) were related to df and one(npl in LG3) to npl. Df1 and df2 accounted for 24.5% and 17.3% of phenotypic variation of df, respectively. Npl accounted for 18.6% of npl variation. The primary conclusion can provide good reference for further study in mapping growth period traits in tobacco by using high-throughput technology. ©, 2014, State Tobacco Monopoly Bureau and China Tobacco Society. All right reserved.