التفاصيل البيبلوغرافية
| العنوان: |
Application of high-throughput phenotyping to understand the genetic architecture of biomass growth in cereals. |
| المؤلفون: |
Neumann, Kerstin, Yusheng Zhao, Dhanagond, Sidram, Reif, Jochen C., Graner, Andreas |
| المصدر: |
Cereal Research Communications; 2017 Supplement S1, Vol. 45, p38-39, 2p |
| مصطلحات موضوعية: |
GRAIN genetics, GRAIN yields, VEGETATION & climate |
| مستخلص: |
Future yield improvement is hampered by biotic and abiotic stresses due to climate change and accordingly, wheat and barley yields in Germany showed a strong fluctuation during the last 15 years. One factor is the increased frequency and severity of drought stress events, especially in spring during the vegetative growth phase - affecting the formation of biomass. Understanding the genetics of biomass accumulation under well-watered and seasonal drought stress conditions can provide a basis for stabilizing or even increasing grain yield. To this end, an imaging system was used to evaluate daily biomass accumulation in spring barley and winter wheat collections under greenhouse conditions. Genome-wide association scans (GWAS) were applied to identify genetic markers associated with variation in biomass accumulation. Drought stress treatment started in the tillering phase and inlcuded a recovery period until experiments ended around tipping time. By daily non-invasive imaging dynamics of biomass accumulation could be resolved, both phenotypically and genetically. We obtained high heritabilities for biomass under both conditions and over the whole observation period. Early seedling biomass growth was marked by a set of QTL lasting only for a short time. These QTL were replaced by a different set that influenced vegetative biomass at later growth stages and that lasted for a longer period of time in both crop species (Figure 1). Distinct loci were identified for biomass under well-watered and stress conditions. In addition, candidate genes involved in plant growth hormone regulation and phenology were identified. [ABSTRACT FROM AUTHOR] |
|
Copyright of Cereal Research Communications is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
Find this article in full text from Springer Verlag.