Identification and Fine-Mapping of Quantitative Trait Loci Controlling Plant Height in Central European Winter Triticale (×Triticosecale Wittmack)
| Autor: | Jan E. Neuweiler, Johannes Trini, Tobias Würschum, Hans Peter Maurer |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
0301 basic medicine genome-wide association mapping Plant Science blast Ddw1 Biology Quantitative trait locus 01 natural sciences plant height 03 medical and health sciences Cultivar Allele Association mapping triticale Ecology Evolution Behavior and Systematics Rht12 Ecology Botany food and beverages Triticale Hybrid seed Genetic architecture 030104 developmental biology Agronomy fine-mapping QK1-989 Trait 010606 plant biology & botany |
| Zdroj: | Plants, Vol 10, Iss 1592, p 1592 (2021) Plants Volume 10 Issue 8 |
| ISSN: | 2223-7747 |
| Popis: | The quantitatively inherited trait plant height is routinely evaluated in triticale breeding programs as it substantially influences lodging and disease susceptibility, is a main contributor to biomass yield, and is required to improve hybrid seed production by fine-tuning plant height in the female and male parental pools in hybrid breeding programs. In this study, we evaluated a panel of 846 diverse Central European triticale genotypes to dissect the genetic architecture underlying plant height by genome-wide association mapping. This revealed three medium- to large-effect QTL on chromosomes 5A, 4B, and 5R. Genetic and physical fine-mapping of the putative QTL revealed that the QTL on chromosome 5R most likely corresponds to Ddw1 and that the QTL on chromosome 5A is likely to be Rht12. Furthermore, we observed a temporal trend in registered cultivars with a decreasing plant height during the past decades, accompanied by an increasing use of the height-reducing alleles at the identified QTL. In summary, our results shed new light on the genetic control of plant height in triticale and open new avenues for future improvement by breeding. |
| Databáze: | OpenAIRE |
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