QTLs for rice flag leaf traits in doubled haploid populations in different environments
| Autor: | Jinsong Bao, Ximing Li, J. Cai, Longbiao Guo, Liangyong Ma, Zhang Ml |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
photoperiodism
China Tropical Climate Genotype Photoperiod Quantitative Trait Loci Chromosome Mapping Oryza General Medicine Breeding Haploidy Quantitative trait locus Biology Plant Leaves Horticulture Phenotype Botany Genetics Doubled haploidy Molecular Biology Crosses Genetic Genome Plant Flag (geometry) |
| Zdroj: | Genetics and Molecular Research. 14:6786-6795 |
| ISSN: | 1676-5680 |
| DOI: | 10.4238/2015.june.18.21 |
| Popis: | Two rice doubled haploid (DH) populations derived from the crosses of ZYQ8/JX17 and CJ06/TN1 were used to detect quantitative trait loci (QTLs) for flag leaf length (FLL), width (FLW), and angle (FLA) under long-day conditions in Hangzhou (subtropical zone) and short-day conditions in Hainan (tropical zone), China. The four parents differed significantly in all 3 traits. FLL was found to be positively correlated with FLW in the 2 populations. A total of 30 QTLs were identified for flag leaf traits, with a contribution to the phenotypic variation of each QTL from 4.49 to 26.30%. Among these, qFLL-4b, qFLW-12, and qFLA-2a showed larger additive effects on the phenotype and explained more variations compared to the other QTLs. qFLL-1a and qFLL-8 were detected in both environments, while qFLL-2, qFLL- 3, qFLL-10, qFLL-12, qFLW11, qFLW2, and qFLA8 were novel QTLs, which may be beneficial to rice ideal-type breeding. |
| Databáze: | OpenAIRE |
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