論文 - 詳細
| RRC ID | 4475 |
|---|---|
| 著者 | Wojciechowski T, Gooding MJ, Ramsay L, Gregory PJ. |
| タイトル | The effects of dwarfing genes on seedling root growth of wheat. |
| ジャーナル | J Exp Bot |
| Abstract |
Most modern wheat cultivars contain major dwarfing genes, but their effects on root growth are unclear. Near-isogenic lines (NILs) containing Rht-B1b, Rht-D1b, Rht-B1c, Rht8c, Rht-D1c, and Rht12 were used to characterize the effects of semi-dwarfing and dwarfing alleles on root growth of 'Mercia' and 'Maris Widgeon' wheat cultivars. Wheat seedlings were grown in gel chambers, soil-filled columns, and in the field. Roots were extracted and length and dry mass measured. No significant differences in root length were found between semi-dwarfing lines and the control lines in any experiment, nor was there a significant difference between the root lengths of the two cultivars grown in the field. Total root length of the dwarf lines (Rht-B1c, Rht-D1c, and Rht12) was significantly different from that of the control although the effect was dependent on the experimental methodology; in gel chambers root length of dwarfing lines was increased by approximately 40% while in both soil media it was decreased (by 24-33%). Root dry mass was 22-30% of the total dry mass in the soil-filled column and field experiments. Root length increased proportionally with grain mass, which varied between NILs, so grain mass was a covariate for the analysis of variance. Although total root length was altered by dwarf lines, root architecture (average root diameter, lateral root:total root ratio) was not affected by reduced height alleles. A direct effect of dwarfing alleles on root growth during seedling establishment, rather than a secondary partitioning effect, was suggested by the present experiments. |
| 巻・号 | 60(9) |
| ページ | 2565-73 |
| 公開日 | 2009-1-1 |
| DOI | 10.1093/jxb/erp107 |
| PII | erp107 |
| PMID | 19439763 |
| PMC | PMC2692010 |
| MeSH | Biomass Genes, Plant* Phenotype Plant Proteins / genetics Plant Proteins / metabolism Plant Roots / genetics Plant Roots / growth & development* Seedlings / genetics Seedlings / growth & development Triticum / genetics Triticum / growth & development* |
| IF | 5.908 |
| 引用数 | 90 |
| WOS 分野 | PLANT SCIENCES |
| オルトメトリクス指標 |
オルトメトリクス指標項目
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| 各媒体での言及数の合計 | 0 |
| 過去6か月間でのオルトメトリクス指標の変動値 | 0.0 |
| リソース情報 | |
| 情報 | KOMUGI |