پديدآورندگان :
Farokhzadeh Sara Sfarokhzadeh87@gmail.com PhD. Student, Department of Plant Breeding and Biotechnology Faculty of Agriculture, University of Zabol, Iran, Zabol, , Fakheri Barat Ali Full Professor, Department of Plant Breeding and Biotechnology, Faculty of Agriculture, University of Zabol Zabol, Iran , Mahdinejad Nafiseh Assistant Professor, Department of Plant Breeding and Biotechnology, Faculty of Agriculture, University of Zabol, Zabol, Iran , Tahmasebi Sirus Assistant Professor, Department of Seed and Plant Improvement Research, Fars Agriculture and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Shiraz, Iran , Mirsoleimani Abbas Assistant Professor, Department of Plant Production, Shiraz University, Collage of Agriculture and Natural Resources of Darab, Darab, Iran , Farokhnejad Esmaeil . Experts of Soil Science Department, Shiraz University, Collage of Agriculture and Natural Resources of Darab, Darab, Iran , Salehifard Alireza . Experts of Soil Science Department, Shiraz University, Collage of Agriculture and Natural Resources of Darab, Darab, Iran
كليدواژه :
Bread wheat , Aluminum stress , Epistasis , QTL
چكيده فارسي :
Aluminum stress is one of the most important abiotic stresses affecting crop productivity worldwide. A population of recombinant inbred lines (RILs) derived from a cross between SeriM82 and Babax, was used to determine the main-effect QTLs, epistatic QTLs and GE effects of grain yield and biochemical traits under normal and aluminum stress conditions in two years. This investigation was conducted using an alpha lattice design with two replications. Epistatic QTLs and additive -by-environment interactions were identified by QTL Network program in the joint analyses of multi-environment phenotypic values, and 31 additive QTLs and 9 pairs of epistatic QTLs were detected. There were six additive QTLs and two pairs of epistatic QTLs identified for aluminum amount, six additive QTLs and three pairs of epistatic QTLs identified for Na amount, 11 additive QTLs and two pairs of epistatic QTLs identified for K amount and eight additive QTLs and two pairs of epistatic QTLs for grain yield. The phenotypic variation explained by each additive, epistatic QTL and additive × environment interaction ranged from 0.001 to.77% , 0.05 to 0.59% and 0.22% to 1.47%., respectively. Of main-effect QTLs, AL and Na QTLs at map positions 70.80 and 0.00 were co-located with K QTLs. Stable QTLs were included 2 QTLs for AL, 2 for Na and 4 for GYLD on linkage groups 1D-a, 2B, 2D, 6A-a, 6B and 7A controlling different traits. Therefore, the markers closely linked to stable QTLs can be used for marker-assisted selection in breeding programs to improve the grain yield and biochemical traits under Al stress.
