شماره ركورد كنفرانس
4678
عنوان مقاله
Identification of Quantitative Trait loci and Environmental Interactions for Grain Yield Components in Bread Wheat under Aluminum Stress
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
تعداد صفحه
5
كليدواژه
Wheat , Quantitative trait loci , Epistasis , Aluminum tolerance , Yield components
سال انتشار
1397
عنوان كنفرانس
سومين كنگره بين المللي و پانزدهمين كنگره ملي علوم زراعت و اصلاح نباتات ايران
زبان مدرك
انگليسي
چكيده فارسي
Aluminum (Al) toxicity is the main factor limiting crop productivity in acidic soils around the world. Therefore, genetics of Al stress tolerance in different crops has become a priority area of research. A recombinant inbred line (RIL) population derived from SeriM82 × Babax was examined to identify the main-effect QTLs, epistatic QTLs and GE effects for grain yield and its component traits under normal and aluminum stress conditions in two years. A total of 24 additive and 4 pairs of epistatic QTL for grain yield and its component were identified as distributing on 15 chromosomes. Main additive QTLs explained 0.0–0.32% of phenotypic variation. Of these QTLs, 16 M-QTLs were involved in QEI, but only one pair of QTL showed significant QQE. In general, the effect of epistasis was not as important as additive effects. Of main-effect QTLs, FSN and TGW QTLs at map positions 15.10 and 64.50 co-located with GYLD QTLs, respectively. The highest E-QTLs interaction belonged to grain number per spike (GSP). The contributions of the additive QEIs were higher than those of their corresponding additive QTL. Some of the main-effect QTLs (4 TGW QTLs and 4 GYLD QTLs) with no significant QTL × environment (QE) interaction were stable. Therefore, the markers closely linked to the QTLs have potential to be used for marker-assisted selection (MAS) to improve Al resistance of wheat genotypes in breeding programs.
كشور
ايران
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