Mapping dynamic QTL for plant height in triticale

被引：51

作者：

Wuerschum, Tobias ^{[1
]}

Liu, Wenxin ^{[2
]}

Busemeyer, Lucas ^{[3
]}

Tucker, Matthew R. ^{[4
]}

Reif, Jochen C. ^{[5
]}

Weissmann, Elmar A. ^{[6
]}

Hahn, Volker ^{[1
]}

Ruckelshausen, Arno ^{[3
]}

Maurer, Hans Peter ^{[1
]}

机构：

[1] Univ Hohenheim, State Plant Breeding Inst, D-70599 Stuttgart, Germany

[2] China Agr Univ, Crop Genet & Breeding Dept, Beijing 100193, Peoples R China

[3] Univ Appl Sci Osnabruck, Competence Ctr Appl Agr Engn COALA, D-49076 Osnabruck, Germany

[4] Univ Adelaide, ARC Ctr Excellence Plant Cell Walls, Urrbrae, SA 5064, Australia

[5] Leibniz Inst Plant Genet & Crop Plant Res IPK, D-06466 Gatersleben, Germany

[6] Saatzucht Dr Hege GbR Domane Hohebuch, D-74638 Waldenburg, Germany

来源：

BMC GENETICS | 2014年 / 15卷

关键词：

Plant height; QTL mapping; Dynamic QTL; BreedVision; Precision phenotyping; QUANTITATIVE TRAIT LOCI; X TRITICOSECALE WITTMACK; GENETIC ARCHITECTURE; CROSS-VALIDATION; DWARFING GENES; COMPLEX TRAITS; GRAIN-YIELD; MAIZE; WHEAT; EPISTASIS;

D O I：

10.1186/1471-2156-15-59

中图分类号：

Q3 [遗传学];

学科分类号：

071007 ; 090102 ;

摘要：

Background: Plant height is a prime example of a dynamic trait that changes constantly throughout adult development. In this study we utilised a large triticale mapping population, comprising 647 doubled haploid lines derived from 4 families, to phenotype for plant height by a precision phenotyping platform at multiple time points. Results: Using multiple-line cross QTL mapping we identified main effect and epistatic QTL for plant height for each of the time points. Interestingly, some QTL were detected at all time points whereas others were specific to particular developmental stages. Furthermore, the contribution of the QTL to the genotypic variance of plant height also varied with time as exemplified by a major QTL identified on chromosome 6A. Conclusions: Taken together, our results in the small grain cereal triticale reveal the importance of considering temporal genetic patterns in the regulation of complex traits such as plant height.

引用

页数：8

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