Loading...
Please wait, while we are loading the content...
Characteristics of growth and quality, and factors contributing to high yield in newly developed rice variety 'Akidawara'
| Content Provider | Scilit |
|---|---|
| Author | Yoshinaga, Satoshi Heinai, Hisanori Ohsumi, Akihiro Furuhata, Masami Ishimaru, Tsutomu |
| Copyright Year | 2018 |
| Description | The newly developed rice variety 'Akidawara' (AKI) combines the traits of high yield and highly palatability, and its cultivation is expected to spread. We examined characteristics of growth and quality, and factors contributing to high yield in AKI by comparing with 'Nipponbare' (NIP). Grain yield for AKI were 703 g $m^{−2}$ (9% more than NIP) and 781 g $m^{−2}$ (14% more than NIP) under the standard and heavy fertilizer regimes. It was also suggested that increase in the sink capacity was the key contributors to the high yield in AKI resulting from a conspicuous increase in the number of spikelets, which is likely due to introgression of the high-yielding variety allele. Furthermore, AKI achieved the similar degree of sink filling in spite of its larger sink capacity. In this point, panicle dry weight increase during ripening (ΔP) was significantly higher for AKI than for NIP despite the fact that no differences in shoot dry weight increase were observed between varieties. The greater ΔP in AKI might be derived from its larger sink capacity and the difference between varieties involves the translocation of nonstructural carbohydrate. In the grain quality, the reduction in perfect grain ratio was negligible and regarded as a small trade-off for AKI's 14% increase in yield, and grain protein content increased to a lesser degree in AKI at the same yield level. These results suggest that over 700 g $m^{−2}$ high yield can be achieved with relative high grain quality and lower protein content in AKI. |
| Related Links | https://www.tandfonline.com/doi/pdf/10.1080/1343943X.2018.1463165?needAccess=true |
| Ending Page | 192 |
| Page Count | 7 |
| Starting Page | 186 |
| ISSN | 1343943X |
| e-ISSN | 13491008 |
| DOI | 10.1080/1343943x.2018.1463165 |
| Journal | Plant Production Science |
| Issue Number | 3 |
| Volume Number | 21 |
| Language | English |
| Publisher | Informa UK Limited |
| Publisher Date | 2018-04-24 |
| Access Restriction | Open |
| Subject Keyword | Journal: Plant Production Science Agronomy Grain Quality Nitrogen Rice (oryza Sativa) Sink Capacty Yield Agronomy & Crop Ecology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Agronomy and Crop Science |
