Adult Plant Development in Triticale (x Triticosecale Wittmack) Is Controlled by Dynamic Genetic Patterns of Regulation

作者：Wuerschum Tobias; Liu Wenxin; Alheit Katharina V; Tucker Matthew R; Gowda Manje; Weissmann Elmar A; Hahn Volker; Maurer Hans Peter

来源：Genes Genomes Genetics, 2014, 4(9): 1585-1591.

DOI：10.1534/g3.114.012989

• dynamic QTL
• plant development
• genetic architecture
• triticale
• complex traits
• genome-wide association study (GWAS)
• high-density genotyping
• Multiparent Advanced Generation Inter-Cross (MAGIC)
• multiparental populations
• MPP

Many biologically and agronomically important traits are dynamic and show temporal variation. In this study, we used triticale (x Triticosecale Wittmack) as a model crop to assess the genetic dynamics underlying phenotypic plasticity of adult plant development. To this end, a large mapping population with 647 doubled haploid lines derived from four partially connected families from crosses among six parents was scored for developmental stage at three different time points. Using genome-wide association mapping, we identified main effect and epistatic quantitative trait loci (QTL) at all three time points. Interestingly, some of these QTL were identified at all time points, whereas others appear to only contribute to the genetic architecture at certain developmental stages. Our results illustrate the temporal contribution of QTL to the genetic control of adult plant development and more generally, the temporal genetic patterns of regulation that underlie dynamic traits.

• 出版日期2014-9-1
• 单位中国农业大学