Identification of Quantitative Trait loci and Environmental Interactions for Accumulation and Remobilization of Water-Soluble Carbohydrates in Wheat (Triticum aestivum L.) Stems
作者： De-Long Yang , Rui-Lian Jing , Xiao-Ping Chang , Wei Li
DOI: 10.1534/GENETICS.106.068361
关键词: Cultivar 、 Common wheat 、 Genetics 、 Epistasis 、 Plant genetics 、 Biology 、 Chromosome 、 Doubled haploidy 、 Quantitative trait locus 、 Phenotype
摘要: Genetic analyses of nine traits associated with stem water-soluble carbohydrate (SWSC) accumulation and remobilization at grain-filling period under drought stress (DS) well-watered (WW) conditions were undertaken using doubled haploid lines (DHLs) derived from two Chinese common wheat cultivars. Some significantly very positive correlation was observed among SWSC. Higher phenotypic values for most detected DS. Broad sense heritabilities (h(B)(2)) the showed wide fluctuations between water treatments. A total 48 additive 62 pairs epistatic QTL identified as distributing on all 21 chromosomes. majority involved significant effects interactions environments (QEIs). Two loci only QEIs without corresponding or effects. The contributions two- to fourfolds higher than those their QTL. Most SWSC interacted In addition, some efficiencies thousand-grain weight colocated in same adjacent chromosome intervals efficiency before 14 days after flowering.
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