دورية
Genetic Analysis of Water Use Efficiency in Rice (Oryza sativaL.) at the Leaf Level
| العنوان: | Genetic Analysis of Water Use Efficiency in Rice (Oryza sativaL.) at the Leaf Level |
|---|---|
| المؤلفون: | This, Dominique, Comstock, Jonathan, Courtois, Brigitte, Xu, Yunbi, Ahmadi, Nourollah, Vonhof, Wendy, Fleet, Christine, Setter, Tim, McCouch, Susan |
| المصدر: | Rice; March 2010, Vol. 3 Issue: 1 p72-86, 15p |
| مستخلص: | Carbon isotope discrimination (∆13C) is considered as an index of leaf-level water use efficiency, an important objective for plant breeders seeking to conserve water resources. We report in rice a genetic analysis for ∆13C, leaf structural parameters, gas exchange, stomatal conductance, and leaf abscisic acid (ABA) concentrations. Doubled haploid and recombinant inbred populations, both derived from the cross IR64 × Azucena, were used for quantitative trait locus (QTL) analysis following greenhouse experiments. ∆13C QTLs on the long arms of chromosomes 4 and 5 were colocalized with QTLs associated with leaf blade width, length, and flatness, while a QTL cluster for ∆13C, photosynthesis parameters, and ABA was observed in the near-centromeric region of chromosome 4. These results are consistent with phenotypic correlations and suggest that genetic variation in carbon assimilation and stomatal conductance contribute to the genetic variation for ∆13C in this population. |
| قاعدة البيانات: | Supplemental Index |
Find this article in full text from Springer Verlag. 
Full Text Finder | تدمد: | 19398425 19398433 |
|---|---|
| DOI: | 10.1007/s12284-010-9036-9 |