Genetic analysis of water loss of excised leaves associated with drought tolerance in wheat
| Autor: | Jan Bocianowski, Edyta Skrzypek, Stephen Alexander Quarrie, Dejan Dodig, Sofija Pekić-Quarrie, Radenko Radošević, Dragana Rančić, Izabela Marcińska, Kinga Dziurka, Ilona Czyczyło-Mysza |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
Morphology Yield QTL analysis Drought tolerance lcsh:Medicine Biology Quantitative trait locus 01 natural sciences Genetic analysis General Biochemistry Genetics and Molecular Biology Yield (wine) Genetics Leaf size Agricultural Science Molecular Biology Stomata 2. Zero hunger Excised-leaf water loss (ELWL) General Neuroscience Crop yield lcsh:R fungi Plant physiology food and beverages 04 agricultural and veterinary sciences General Medicine Horticulture Wheat (Triticum aestivum L.) 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Grain yield Anatomy General Agricultural and Biological Sciences 010606 plant biology & botany |
| Zdroj: | PeerJ PEERJ Peerj PeerJ, Vol 6, p e5063 (2018) |
| ISSN: | 2167-8359 |
| Popis: | Background Wheat is widely affected by drought. Low excised-leaf water loss (ELWL) has frequently been associated with improved grain yield under drought. This study dissected the genetic control of ELWL in wheat, associated physiological, morphological and anatomical leaf traits, and compared these with yield QTLs. Methods Ninety-four hexaploid wheat (Triticum aestivum L.) doubled haploids, mapped with over 700 markers, were tested for three years for ELWL from detached leaf 4 of glasshouse-grown plants. In one experiment, stomata per unit area and leaf thickness parameters from leaf cross-sections were measured. QTLs were identified using QTLCartographer. Results ELWL was significantly negatively correlated with leaf length, width, area and thickness. Major QTLs for ELWL during 0–3 h and 3–6 h were coincident across trials on 3A, 3B, 4B, 5B, 5D, 6B, 7A, 7B, 7D and frequently coincident (inversely) with leaf size QTLs. Yield in other trials was sometimes associated with ELWL and leaf size phenotypically and genotypically, but more frequently under non-droughted than droughted conditions. QTL coincidence showed only ELWL to be associated with drought/control yield ratio. Discussion Our results demonstrated that measures of ELWL and leaf size were equally effective predictors of yield, and both were more useful for selecting under favourable than stressed conditions. |
| Databáze: | OpenAIRE |
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