Breeding for three-line japonica hybrid rice combinations with high resistant starch content using molecular marker-assisted selection
| Autor: | Yang Ruifang, Wan Changzhao, Gang-Seob Lee, Piao Zhongze, Bai Jianjiang, Ruan Xinmin |
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| Rok vydání: | 2020 |
| Předmět: |
resistant starch
food.ingredient biology Software maintainer Significant difference Selection strategy sbe3-rs food and beverages Plant Science Jiangtangdao 1 Note biology.organism_classification hybrid rice Japonica molecular marker-assisted selection Horticulture chemistry.chemical_compound food chemistry Molecular marker Genetics Resistant starch Agronomy and Crop Science Rice plant Selection (genetic algorithm) |
| Zdroj: | Breeding Science |
| ISSN: | 1347-3735 1344-7610 |
| DOI: | 10.1270/jsbbs.20005 |
| Popis: | Resistant starch (RS) is beneficial for human health, and especially for diabetics. Considering the high cost and low productivity of the Jiangtangdao 1 rice variety with high RS content, breeding high RS rice varieties exhibiting high productivity is essential. A molecular marker-assisted selection strategy was applied to increase RS content in a three-line hybrid rice variety. The functional rice variety Jiangtangdao 1, which contains sbe3-rs (on chr2) that controls the RS content, was used as the high RS content donor parent. Subsequently, male sterile maintainer and restorer lines containing homozygous sbe3-rs were bred using molecular marker-assisted selection combined with traditional breeding methods. The male sterile line was crossed with the restorer lines to identify the optimal hybrid combination with a high RS content. We obtained four combinations for which the yields were >50% higher than those of the control Jiangtangdao 1. In addition, there was no significant difference in the RS content between the combinations and Jiangtangdao 1. The hybrid rice plants with high RS content exhibited favorable agronomic traits and therefore have broad prospects for commercial application. |
| Databáze: | OpenAIRE |
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